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 0x197509983c81dacfc0b723574fc7e085ef369d5e6b67050f799a1ac40a9aaf85. 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/9878a370-2669-476b-8d6d-7c6311a443c3.json and https://artists.proofprofile.net/proofs/artist/9878a370-2669-476b-8d6d-7c6311a443c3.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 0xe1ac38016a9ff439051a217c80b5defb299f66d2275ec77ec6193fe78bf20e80. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDHM0906941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821235e2bafcf328fa09a3449b5247b98872d2471f6487131dd79481f9a6b88d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:59:05Z), 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/USDHM0906942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fc463a46e4066c3f200bcabf14a21be847bffa983abbdc524090ef47fb9579. 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/USDHM1009126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0bda62e9156fc53f168c9594dd772ec97cd2fa7ed6db6adfbc000d3c290d6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USDHM1009179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1bd7ee97a299433ade865351351428265447798bccf5fe7852a7ad5159e039. 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/USDHM1009160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4e0608ad70c96a546fd34621b23e69fecdc9a8bab05a8102da018648bd797f. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USDHM1009162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc663bf6bd27dd8f3c2e4a0560b5531e57ef469ef5d4a5c5b46088f364ec14585. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:22:01Z), 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/USDHM1009167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe5776947dcea07d7164a939ca71f2bb110f9f39c53dcbf56541667ccdfe39f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USDHM1009246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbe6a3a067e18db262c708f3f939c79ad1f056abfe5ddf81dd89764432d65b. 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/USDHM1009108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dddc3c6b7ac938968b6105fd826f2f1c5dd5f1634ff3bd8b1fccf8c0ea58e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDHM1008754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4f0b263d1f52ec34468bf58455448fb9187d9498e1f20506495334632a1830. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USDHM1004351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6240e74f833a948d0fdafd4f38cd5f0b641fc4c45fd8c9be27cb414df08ba11. 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/USDHM1004355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc100d0bb486691d714699acbbe1c33d02e9cd3b32696f5a0f2113ff71cb140. 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/USDHM1004361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5daed29a25b2299ff5ce00cdc5dad8a7b939baaad2a8d791bd99feab7d2bf6f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:33Z), 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/USDHM1416108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59cef81fa86a246ca0354956ec5cb6750dde1c52dde9c5c616b350ce59aa001. 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/USDHM1416109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978a2601b16d7e92cdb6363c4977698b7482e504f398e4f72599d26654759942. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USDHM1416110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cc6562a78403527d52eb8f3378c235001a5d821312d0975994d577b0c31a38. 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/USDHM1416111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2727fb998a45fdf4c8059dd1a9c66cfa863b2fa318089c4a8383986e94eadc8d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDHM1416114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5008b3630c43c3f3deb0fb541b319dfd7753b23429758fcf8f7fe4edfc9841. 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/USDHM1416115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c5895529ff879a287bceb32c00dd3478690d3354ffda2fc616ed860d194ede. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USDHM1416117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b6aad85e79fa377cdba3f791465626cf1f4297613da9310e7e913eeefe5d62. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:57Z), 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/USDHM1416120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd44aa43775245e1f4e77bb2fc9c094655e8341413d5bd58b2223bc4b99ab9c6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:21:08Z), 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/USDHM1416126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e6e56bd8dca51c8da93a3d719929486b1f31671b2b5c03ea1992a48f73f2f. 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/USDHM1416127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b2fde46175a316fd0690c1864cc54611fc87978dfb8c68bc0c50fd72ca15ec. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USDHM1416129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731344c2d4acf617d987e87f656e8236fd83b74da10cdd63297007d340fb74a5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:24Z), 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/USDHM1416131.