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 0xc8d7e7322b65e224c5c037478c9407b6eafbb2da64a18419e70a2dd674e1f071. 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/94a05741-ee69-462d-a2e9-e28cac41be04.json and https://artists.proofprofile.net/proofs/artist/94a05741-ee69-462d-a2e9-e28cac41be04.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 0xfffd5f8e9914cc886291b149416f7f2b77bb52a46bd42fa90db6cd702586925a. 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/USJ3V2026727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb989fb680afe81c7b67a97b905d00b326440d6ae492d8b30c241030fbfb045. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USJ3V2026729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38a0ea80095e410a959195dc3f3233bf99b46fa43a9969cbdc7943e1c19f6a6. 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/USJ3V2026733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23ebbf7bd1a7a810a48e9171c34b13d8107abe8297472dd8a5c5a6770ff4aeb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:46:00Z), 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/USJ3V2026749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d26ee5425addc0f6ca32957b406bc6453f25991574d159738070e845ed88cc. 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/ESA012138100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d69ec26fad9037a85dffde27638e37314205e76dda02005a7b9b6fdc1533f0. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ESA012138101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8281f756f8bb3f81c8328415a387e2b36a7c7032ebb279ba08986e7e70a9b7. 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/ESA012138148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619075dd14a2c487dffb86cf658dfec29e51597a20ab3aace7e8113757f0f9d8. 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/ESA012203896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87bd6b405bcd3ef1c40498f9604e7be0c16237ff233a278e895f8d7a66ed453. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ESA012203897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e04e6894e26f7c399ada235958e31e0dfcc05e6187b194bd7fe2f9fd471cb0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ESA012203899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c886574f61db190c576f434b206ec84def8bdf2c1d7f44cdfcc4fe57852292. 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/ESA012203900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f64e0734351f1a886544a03c9193ea753b5ddd884619a50ce209f608de82d1f. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/ESA012203904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a81c470469ca793cc5aa1489ad6fc256934b9e39056782285edab30fa6fd2b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:41:42Z), 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/ESA012203907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b282e43b1ff7af2f19bff0f0c3d451f08d5c2c42bb1814a486bfb17aab086b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:26Z), 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/ESA012203908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc013c80507f7cc79f12ed905910318765d4dc7d5fbfd0c90f8d03fac98980c86. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:04Z), 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/ESA012203917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1ff8c5ba6fd9dd88c2f7ba15590abc37d697e882fa9d614452ef4c6ab0bd1d. 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/ESA012284810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c81639f8e69903008145eb6cd8f3e9b1a48374a4156da7323bd26f6d086d99. 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/TCAHN2368356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231abb5b78de7a6b86e94a78ee387aaa944d71c194b575c6e834c081e1923af. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:54Z), 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/ZAEI72500714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad212be6c2656502c4075b5cc37dcb7d548c828aa4ab8c6a09a4aa490a5f445. 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/ZAEI72500715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dbba43395f259fccc028337c576e139df8aa0d4f5df70ef80ab37c687e4533. 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/ZAEI72500716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4651516bd09e6f784d9496f848f97375cb711deaa69c46a10c7b0c56dc525d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:56Z), 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/ZAEI72500717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce977340de2790c5b929d1b74ebddcc68b3c7d62dc60980814e1b91de4f7874. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAEI72500718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd132aea141677beb4674aed065ea80655417643265901c5cae3e7ab299a9a077. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:12Z), 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/ZAEI72500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd483a25696161d2a7d72ff8285d56e91f5be7d983b2eae1310dc3d66670fc54e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:44:10Z), 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/ZAEI72500721.