thumb|Most modern English speakers encounter "thou" predominantly in the works of Shakespeare; in the works of other Renaissance, medieval and early modern writers; and in the King James Bible or Doua
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393a9697871b241a2d9e1ee276aadd9c5ecce9dbc41435c6a470eea38f766a5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5af86c8e-83c7-408c-b977-a8ad96e9f3a4.json and https://artists.proofprofile.net/proofs/artist/5af86c8e-83c7-408c-b977-a8ad96e9f3a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82d0cc4ef0b779917c16983410d06a67ee71c09ae725fc08d34d15aff5a4322. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05e076f835add925614c8e1ff3f108197043175108ba3e6f3fa26bcadb286cc. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810021.
I Was Ignored. And Judged. And Cast Down.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ef72f295ae094945ae219fca86bde449324858d18c3e6d25a07ce8e5010f3f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d306e49132b342e863c7d87eeda51885d1e714a758668b30a48b83ccacc032a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26921096877d60b89bb6d2d0f68e191fa2ad89e44e4db35c87f7f8c9ed86fa9f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5eb7780ae25bbb2da8cd9f8c8b0862a8bb4cdf7afad9154649ab8d246bf321. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810027.
The Severed Genitals of Every Rapist Hang Bleeding from These Trees
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6c25f781c4bae67cecdfab0285a5f48138c92289f122fad5e3ab56c90718a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa927179c9372c99418034057c4a9e49a22da6a3e3ec1ca25c7d1488872c2141. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe43bea8643a65ea803f52fc503ff8c5544ce85142d080a3bee41a9611aa08a7. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76e5736fb9facd90e8a0d3c86ebb3c135b69857841915a9ee2efb44e9320e2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6f92d350b4386133af03f0452c63aa7d7381b45302b0c726c0620910e9c9c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904e59363478b77008b998d9e85b1bf375c463d339b1d046220fa29f9729e9f1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4766cb932df6fca539ac447caa603f02a98e2f9c118c2d4f3e82617aafdd6437. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2b39a41e7e3a07aa7a320d8203bb5f3237624323d1a24d180ab4f5846bea48. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df2d846b20f2ea4adf3177152006253659af0ac24607ebf99ad1aa87fe7d244. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e9e5f8870ff4d5ad2e5977a634bbe48e09e14df583093de1709d3161ed599. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133533805276c1fcca7eb030b36862f38dd19a83c0cd22abba9897f79d2a775. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe179ab107a555b957ae64b1fbd3a7761781374e62ac4dddc72f5cf545fd71f20. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3f947f4f662eb058cbe2c61f9d0a0c7abcf3b92eca04305e16f7f9306f8c5f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0827df83a1019a61e1bc0deb220d89b9675dbad7a99b75391f57bc31eb7110. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268b5ba4d6da33b4ac4a2157860175ee3dd77b6cacbc6a4f7e678aa148fd4cf6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ddc8d480b301b3e0cda1cf1fbe91602005a356c8664fb1ee2c6030fc758424. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410007.
Take off Your Skin and Dance in Your Bones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55152696e73c0622a6d95a0e2d2466938743e5d292872e658b07455d591c049. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a7e2d0b2b0c19fd8c405c2860bb70a7bdcf65340f75931f9316908c12aaa3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410009.
Released From Love / You, Whom I Have Always Hated
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2902b8d37086a611b55f1746db10309d6ad42174be5fcd9c7b01ad4c08ee1320. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216fde64c530a3825d1157b620809456208491c10a9e501c55f35eda83108c40. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95c5fdec7d5106c8f30c6e83d0c0a70a122fafc7c6b54d7dde675abe8b773dc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f73d50067da443e92488bd3f9019976fc9b255fb55f1cad4d7a2db29b9b97b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ece13556eded88f22ba92b5663a37740431e46ea035d47c075562f97cc1e6d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4541fab4d8f920d38f623eba720321bf1938c36632ac385b46c4aa77989fc148. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71810057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf353ac21e0419791c5147400d997d91aa748dbd9bf8030335fefe9759fb4a4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D1800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6688ea7c3c164f058770c90c82d5e6857dd453435a472a9bde6658255b1b1b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D1800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba81612da519bd97a765794773028ccae1e9c7e78cc7f6ee2c947c7615d64c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46988a2877f190af7f632c0ea5969d178d7f7504edd5b53418fc3660ce1ab39e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4bf2730535882bd24afa53f6cebd6d0fbe56436dc3e85d210d565d1023c3ac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D1800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a2562759b3f9c51914f85610cf99aaa9d7fecb9488f5370843eef674457aff. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1820501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd75c960fcc8b5146d9bdbd0762d3138627acbdae15ea2a50481bc179c27c620. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1820503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cbebca70833a4aa1259665d29a909cb126f046a71d089080a42ab3b8e278f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1820505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cdc32748c3ae7fc7ee87c4ecfa43e69440e3b1291ed587ac4cb8c407c7584e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1820508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a1a7af15e1eb6ebd7122cd6de513116103c7f3ad30fc7b6b449c0a0734943d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1820509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e55550c48db3a11d2183053c9670a5a7f0e4853adc38b3b55a04f692058871. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e1afdfb856515731f7ec3ff181968b599cc225d29320921a047f2a9b4301ce. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1215a5377e559aa3a78c6bc6ac2c36fc71210a6dfefe298fcd70391260645388. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d82f9d7a497f1568364e111f1c929c624e46d1bb36a10b3d75fc6861a9896e6. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d76281c1c47ede901246295cbab058d8db15b2d92dd6eddeddc7aa7007cebff. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0686578cb7420ce5ff47f97fe50adac3c071849cb3ad00510016e67c4d2c892. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd46610ebce1b118c7734238f3576d24ef5fd183b764ec2f4c5486ec15d374e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13df83e8b8399a6f86bb5b6b34559f38b4f230d58ea8d36c082910c16879472. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e67ae8d2e5ed088a9af53bc462c7a2d5575fbaf67c60ad0273f4f72f668d162. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f961a7e685a79949acdfd4a5f0da5a15704c9a7d6ed3ec5c346c4f60f0b18a2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485dd8f34bd1c417d0319d808ef79ce48011a67e27a9021f75800d046bb94114. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d2455154a2b163e0c6c118f44242766736fc753ce730c2da2015407830123. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5494c4e166f615fad9ae86dd94ff9773490825310be36d2d707636dd0a54592f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaef95e5327ad47fe6b190316a3dc91672d362ee7a06df9ceee1eae3030ccda0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826e6375d89e0932a675c6578042547414f935e27d610d434ad879f2ed03ecda. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a844b99cfcf98b0009746250ee88dae84e51fc9cbff5304a7b26eac8ea687. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838f7aea449d0d1ff63dd922ed81b32b007d3da61e42563c96b256dfcc5c80b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2b0ffca553f5e1b3109707c191174559a4224cb1c4e23f48c3599f68d8dbf8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5733635ebbea15dae115deacb64b0749664249692c890e1b383702290749d3d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2babb5956673ba47da5bd4967982fdcf692037ab6f48bd930aec3a4575d86b0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9fbe0a9b41a794362219c364c89758120e3c1d9e1f19a081a0d64bd72decc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a49564ffb44b0f2c1252dbd558940fea33eae45f13d7dba93e3ae84dd705f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R72000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ecce21558dca97f298171fb716f1fee7062880006607da6bf2361c6b7cc426. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR2229907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed68eba6b4a30e4adbe4807b987ae2be88e2c057fa1f8867dee58ca7dbaf4e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR2434205.
In Utero, In Tribute: A Tribute to Nirvana's In Utero, In Entirety
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2951005817e9fe8e1b6969a6444b0d4afc4abdbd39f11faf7ac645a44ea76d6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71410018.
Whatever Nevermind: A Tribute to Nirvana's Nevermind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce7bb956536a84601329957ee56ab18deb26ffdf85f197ff5b2f5b93d7cfa0c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71510022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075cd655eb5f3e09950e260ad7e9893f143bc978feb8a325b1b107a2493d4e7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2d6a9e1146471c9618659add0addf9ddb795f8b71cdb024038146d64defcd4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926d5c48e336d7374ced3e5bfe03b16df1ef7cf7851a38a5d4bb7ff9bb148062. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6bae0279914a260407f7b7fc6d829899eda6b8ed160ab4a407494c4e577635. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09faf00c4f599c8722b889034a2226ca2705c6c341542968c1ac6c25608c6d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf90cce080a7b9a58a35e72fe5ac194edbb1f179c71defbe19ef343686f63ab2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308b3853e12a3b4d33a83b622b1e81d0f583d8de8bd1780bd1e57ad590b1dba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718bc3c76cd05dd83f0ddbaa37de31505fb80873ce5ddf9a96066e5e3116c846. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2201772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ce46a310f5386901d9b6f76313e13bf880fd521e38063350f952f8f7217090. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES562015501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771dd3bb7eccb84dfb6e69556aadfb982af7539fab649beb6ba6355b3650d530. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES562015601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d8e1ca595a0d230a71fe0971f9de5e6d67ac4110875c915ed4edbf23c93aca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2204523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ecce21558dca97f298171fb716f1fee7062880006607da6bf2361c6b7cc426. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR2229907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f83fd90b7010dedf5147ea0c5f8fa1bee531c87ce714f4dc680538a8cf803cb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71510023.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Doused in Mud, Soaked in Bleach: A Tribute to Nirvana's Bleach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934eac8868b14818b804afb2840da3f49aceb6580fc8f59f92e6b8842ba8901. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R71610042.