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 0xdda85e979042f210883062bec98eca90a5d7963ba8f723cbbe6bde04045b6d42. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42405410-6a60-4d1b-aef3-15eff642360b.json and https://artists.proofprofile.net/proofs/artist/42405410-6a60-4d1b-aef3-15eff642360b.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 0x3f0f3ff83344a0c9781ed4e55a554236311b6f5b4701c916ed7a353d9aabce2e. 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/QZFP52068083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59abc94296ef55f3d8325b02729622114a8d5ba0599722dce43aa812d12be712. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZHZD1972893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafb53b58051438cdc1d069f80cb54f4d840ed752eccacdb921014cf32dba3b3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:10:54Z), 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/QZH5E2039472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c03079e2eb5507823bfbd450917a974277f0fac81d3c49162a7b6b8282f9eb5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZH5E2090510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff65b3c3e9631eff623b65aa6f30c7f4fd4f3587aeceb5376c7cefceae9f1c8. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZJRC1963377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f34ce167ad779e1f5efdaa44cf8fb9e24f63aade172f64bfc5ede76d475191. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHPJ2004378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0f59ca1c743fa5267149b247d448a1a07d67813e21fbcbde58b5e751e32e54. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZHZD2094926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe546dbf3087448fc2ad4a2b0ae9e2ffe2d57c1ec2dd276bda320eff52bbefdd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWR2004536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed666b81988e5ebea061415a1e1a0d93ae0bfdc3667f6747dcb6bdd03412f51. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:13Z), 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/QZNWU2039378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee14b8d449badd8e4e6a55d510b0775e91c267abf99d3366f2c4015b957b2ea. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYY2132642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef39357870fe445c1220cd4c4d0991091372ea584ff284a3e102a87121bc7f. 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/QZJRC2075636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89b3d6c833def0c72b322a16fbb8269e546e7dc0a73c2c2c248f7922c4ea18. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZDA52184643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b508a56f69837121f3a26ad53bb26ed01e4ed6295885a095e5735a4dc719d. 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/QZDA52184645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aaad85220db128baf617d7fd219d70eed217f4cac56496930877fcf450b36e. 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/QZK6J2116396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1531b392c38263007ea2dac350c5b8c59c7100b97f58ed1cf2e470840c2fb1c9. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QZNWV2139802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bc80b0f6322e84bfa1c0cd3b0ff4e62f7a43a42aba294172f230daf4413dc9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:20Z), 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/GBKQU2200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f9891727606a8961b535541382584b118119b4538d5478032e6f6a56711380. 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/QZES62204608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a936f14b93caaf6b2e5eabda23f6a6c0902757edf20b100eb6c4e5e213a61e. 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/QZNWY2231367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a98c459a63358840410bdeca021c6af5901f05acba027d1e02bf8ee07839c9c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTB42210973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a759a605a6ba6932920dbefbe42f145d85ded6b34b098cac1b68edd42fac0. 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/QZHN92319887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a39dbd2b08680051e2983c22ee728d7ddd4291062debdb6852211405e8a72. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHN92319889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71ebfab517267e89de5ff0ea8072c0448641b2a3c97c44da7ddd66861acf311. 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/QZHN92319891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76344535cfd45c3feb86776f8eb1c328df3f525d44503e645f7f6bf057c5af0a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:07Z), 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/QZMEM2363655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7ae55225eb3d6d18bb9987861188dfb3b409939a311a8cadc0275c323ff28c. 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/QZTB62306574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2766f541dbfbd792703301f0af82040ca2a7b078723386ee0ed2714a45ae45. 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/QZTBF2385632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40dea8a41e1b1f530564f0ff0bc855c2dc8ed93202f96bf0dbf9379ee853312. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:16:45Z), 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/QZFZ72427667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad37e3fda03d576961644138d22f589fa618fe513ed231dea80e560edda126. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHNA2497157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda288ed944430e2680256d0c3d39b31cd67a41e228c76f13153f60974a2512. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEQ2428633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326108e6b452f2646bc1f8a8e44932340f19bf15e2bcfcd89cd21ef7369c099. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZPLS2448813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cabc5d9d38c4c678e98660ea0c0f66287df01e6d14699a7fbfc4179faf95ae. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTBC2450305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bb9767f8ca0bbb1cb26cd899d6872aeaad991a2d132e33dea00b26ecf2695. 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/QZMHK2032818.