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 0x885a86df1c561d2b6773272730aac4770243bfae37698a1b566174d7a3080559. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d7cccad-6465-4114-a5d8-31312baa993b.json and https://artists.proofprofile.net/proofs/artist/7d7cccad-6465-4114-a5d8-31312baa993b.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 0x281d1addbfb40b52a58da95d8b1aa7d451e0cee88e804c036670ccd022f9eeae. 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/ES8511404146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d4afff019dc4984e90c21d8406d1cec3cde11e88fc7d8681d291bc152f7e1. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:30Z), 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/ES6101627602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f07bd33d48e1bf6d101d3fbee7e6d4b2ea5fc1e5dcf81b44a82fe986da67c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES6101627604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf45ddf764dfc119329fe58b98e192aabf318ad53ca81410fe80570de4821e72. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES6101627608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4901b3f58077b95dc0cb99fc3b3b35ec13956f0ca2461173619b02d91e934e7. 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/ES6101627610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b72e0a0be64a69988585ead04bfe21f8e36da92d5c9b2a540402bea910f1a. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/ES6101822601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c152a31f9d890dcda9c566f843ad52d9963933573e3e819f63200deb4dec7d3. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ES6101822602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69004ef88f2347d3a9066a2c85668a42a198743f99974dea8bc70acaa80484ff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES6101822604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af18b85e6503004599137cc4207f2d2e9908ed39a595923d797129da364957c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:45Z), 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/ES6101822605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a065b66b779c144450eceee7b8c900d54edc168f508aae4bf4b833cc0300bb. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ES6101822606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f9dc0c72001396266939843928c6c83c8dfe467725f108e5790a81511c491. 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/ES6101822609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8721e0a39eba2ca2f2b6b3e810081c49ff069a05504ab388cd604d9599c61bb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:38Z), 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/ES6101822611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c108f0af26b78c422e09852bf289cfba8c7ff2e606232c77b8837d336e07dd8. 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/ES6101822612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b9952dbdf573f21e3178bd59c4372a38ed59d5e507ff82b8d51b3afde8ded. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:04:33Z), 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/ES6101822613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce13cc0610c732826361a89c6e017d5106c6a65842a1b81f8a8837b98a5fe2ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES6101927401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ab0391431373742ee44874a7a8e5630fad7e3f3437c0f92788210877c4656. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5702000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41d89ab3017ad7f6ff735c6056d8f48a3bcecf327f0fa86d820805c86bdbd6f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ES5702000364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b42ce8dbba6e9c1d76f1290af4cbdcc53d61c31ff09e4f52ac2ebae7dfdc7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:27Z), 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/ES5702000365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ad22144e7373e7ae89dce65ac7cb0070b24636c5a9545083a0530294545bf. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ES5702000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bee435a0f7d0e753e30e7159f3511dca1c262eaba06e5f3a0a36c324a165c5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:15Z), 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/ES5702000366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bed15838eefbacc98afeea03bc2cf0aacada70b2aa115c403752af61f4d7a0. 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/ES5702000367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d12539abda944b3408a91c8c6b95fcbc71fac7958fdf1f3d3082c7cf2c09b56. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5702000368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd6ec77b5ac2166b6090839e37d06809b8a0249702e1a2ac67b7d650e1c6a23. 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/ESUM72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b927bdaf546b1de30e2920ab20bb5964e68bd9359ebd45f46f5a72734be34a7. 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/ESUM72200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf843a04b5391d8b723b36779356a6f9c7d3db609399308988d1f08bfa896f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:51:28Z), 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/ESUM72200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ef0a062ad45dfff0bd74a1269525bf36d122a80e5ae50e3e7a74586fa8c60. 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/ESUM72200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95313be11db599af081f9a8870f46ff3ba2bb6d813133c81879c159e0d3576f3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:52Z), 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/ESUM72200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71ea8352de29d81a63202e2f7dc1343561be1a467a69d038f4b9b3c7561bcc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESUM72200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258055d7ac09f1cfa9e42439f45789a82b64f2b3c697b0f18cb7b98a3650c8b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:04:25Z), 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/ESUM72200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff29391d1ac01554a3ca3d7efc89951585b380e56a9d8a57e06b0c18a68c29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESUM72200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dbe5c8e2249a9544600387db4051811fa535c570bdfc88836e026c97d6d4a0. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:37Z), 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/ESUM72200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2e3eec06fe94d3ba1dbe030de90b15c7896beeec61fe7cf52c0546bf5b9eeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES6102328604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196e45eecd58e522f957f43e9a8aea337d46b98e4df4425e8140d2dd96244ed3. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES5952407030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd67c225c8899c624780858d086b71c20c24af6f61f105fbd292ffba3845ff5. 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/ES71G2422801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dfd2dd8a8d47eb94187bc6878843cbbd4d538e41fb19579bf5bc0b20d4e8a0. 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/ES71G2422802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070d7fccccd27d18871d83b26933a227fe106011d66386677b51570afdfca96a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2422803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d141c368d5748fdeb7e9b2c65413f0f0dec8c22fd00c0415d7d566b57d8dc5. 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/ES71G2422804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b13606127d70e566e9771f0a9bba5c6fdca93d1392105ab4e365f955831cf2e. 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/ES71G2422805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe555bba18a77b187518e8e3ea03a68440894c25d11e909a3aa2faa8eca9e6eed. 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/ES71G2422806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070d7fccccd27d18871d83b26933a227fe106011d66386677b51570afdfca96a. 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/ES71G2422803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3481b35541d2e6d6cbc35b85efac81eb700ca576106ef2baa10fa26188ae63ee. 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/ES8511505110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7af7b547e4aff70c02086aca3ffc2ba25136c11140fc8e34586665b45a7aaab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8511505114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc87d9d5f6cd94b2b0636ec8e76602759eabc09f00f9ba8a50d9522ea119d59e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA011390779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df540b7a1b585d15119e722353660929bd6d3ea6b7b10cbcce5a3b6b3b77ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES8511505107.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96480bdaec133af11c4518d4198a6e500aeff35e31ce9794992960af78e9b1e5. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES8511505108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6995b5ca904174ba3d4d40fd2fbd48ac017a9b2d88dfd5ea0a4aa8c4e1fdc21. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES8511505112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2e2458fb61c02a68a2366243c18d010780b8071e0a582e10b77c8fd20f75f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES8511505116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f457084fdce2955cc5c2b1be35f34f7bf60cceaa84c68c62472dde5c381db. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES8511505117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0999407f9c11faa777590eda632627263b5b4bdec859bd3377a45c1da4f5b7f8. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ESA011390778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cff9ccd325cdca4293584ebbca9092fee06bae930296d50d6ef5be3933b6d2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ESA011390781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f3df4cea1b88816d3507f0e0b5b612ba1099ccc78fae8fe06e299a96a6a2e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ESA011390783.