1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1022402bbfb8dff727055de8958998f9ecab6e5749a51a8376ee232d98625fda. 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/c6c7213e-765d-4760-ba49-423489b4a68f.json and https://artists.proofprofile.net/proofs/artist/c6c7213e-765d-4760-ba49-423489b4a68f.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 → block OTSBitcoinBlock must exist at that height 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 0x0bf6c0e6ccb68b52f46cb6dc024e97232ed74193417ab90bc68f56741407dd3b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GB8KE2306063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d33183c2559a8a62503a49d54510adec41c34bb5fc21137b94a0eb3189bf16. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GB8KE2315058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd7a26a8d979f074d23bc71b35489995de7e36f8f66e29fd38d64364d280864. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA072371347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca801a1d7a6483e39a51ca368c45c7176a5ec06b4c02765cd03fdba18e982103. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLV62301204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a91a84da8016871965be2a958bd26bbc4b079881b0206a194a66438525d20. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:41Z), 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/GBKQU2407169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1ce85c67bfdfb8420510a801f6882d0bbff7e353b14b84598fbbc968dd3542. 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/CA5KR2491199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf397efc073b94f5f7c8c09ffd67f7868015678743940e76dc93b5c6c4f208ea7. 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/CA5KR2491201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d4b12a2a2e9ce857e538543a215d1a848aa9b64ce17d42401c7ee2740a3b2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CA5KR2494423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7348983bec060b2c546f1b8d00bfe697b68f3b51242816f07912a4d1aa19db15. 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/CA5KR2498758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c3c6989cb9fd1dff2bb71fa7bffc794598f67747fae7b2e15be445e23b4685. 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/QMDA72417075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068d4be2e075f696967fd8cdb36b5f25458a4faf2cbc08b6522a97a3daf91e8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:37Z), 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/USUYG1587978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4538e9e9d646d2190facaae13810d9652b07e96eb3c1111a49e5c8ddb7a6946e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMDA72417119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77aa0660a417ec72253dc0dd16fbf92ae04266f792325243dcfa0c7f907097. 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/QMDA72416802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86a46bb42c0e0e06f94399cd62e1f455f88ec79b7623f769ad08b2726daf249. 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/QMDA72482929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9647d43f161f1c6f4a4db0fa730993df13e741f23b2fc13eb6d466a8690e5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM4TW2526427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec69a47e706e660889678b3b752041728d61056edec41b349d0badb7ea122fa. 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/QM4TW2526429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4626483ee7730d17558ef105fb053a8bb753d1e44c7a18c615e23c24af7029f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:42Z), 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/US3DF2507938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62dd0ee09601c32c194be32b131da875a08846b39b49506660a455f9eae735e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3DF2507936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4c393996d486ae4e85fd7ecf9f00571f911c7b38cd7dd5ce26118bfed39b11. 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/USUYG1707310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cc179eb8c4ce19c35fff47f149a9e201023c89f795d686f998fa38be4554f1. 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/USUYG1707311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6527d8c541b1e62222555df1c0c1b52fc3f63d86e29eba77efe52bdcf051911. 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/QM4TW2587340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee97edeeccbd10975f4d3b4be797a57a6bfaefd24f2581f0cb0f84b2c6b5236. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4TW2587341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee388db475fbcf3850dca3ccfd24c69f2da19ec556cb72ff9aed13e9150f96d. 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/QM4TW2587342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce9fa4e74684ba3814097ce9873592432266268ec86cf7350b37fe902d5c73. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TX2533322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c1d48350e4d2496923ee540b8d33874727a4e694f9b58e6cb706d54b73574a. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QM6N22513783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd505c97faffe5776ce5451bdc8517d14939e9155a4e7387ac06194cb7f17421. 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/QM6N22513784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61822d6f78a85ba390f0bf8f52155e39b34efee8e4fbc4dbab6f86c0436d4151. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:59Z), 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/QM6N22571974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fb037b0ecff18669fb543f4921b7541a73bf468cb1ef5368fefc62783ae73a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM6N22571975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e2941f91755159143c741fc62f185baaddb0eebb2bf4f18b5937cdf066e7c. 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/QM6N22571976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931967ab99f6f2cd011e6cb9afa825b71f50b17b40840ad98499b9129697674. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QMDA72577141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba943ba9f0f6081ffa5f03feecf3fba213858441cb45cba26132ab0d75a7097. 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/USUYG1579004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d8beecf714cb6aacccb37f3b61e7f4fa13ef45090e1d7a51cb2065ea6899f. 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/USUYG1579005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6e9fa29f743836706b95c07cf53e4d421c02c8c74f568f90f4e151110b235b. 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/USUYG1579006.