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 0xd3774ee510989d5a0721ffb9d0fe49da7cf49ac0fbfea412bf8d01967954a0ef. 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/415b9d8d-5077-4aa3-b8d3-d7015385e99a.json and https://artists.proofprofile.net/proofs/artist/415b9d8d-5077-4aa3-b8d3-d7015385e99a.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 0x67fa08b3cd5425888e21676081f984b8239198c2aa7457e84074c48f1b2580b9. 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/RUA1D1715077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d8cf7a11ee1e940f3e4c429241219e46fcce421dcf6132e30f6bd2634caae. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:24Z), 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/RUA1D1714913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cd0470eed0659fc3ef89c0b4bde49bc5310e7bd6fb21c0f34b64cb31503f34. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:21Z), 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/RUA1D1714916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68eed96d18712f515c45ba18bc0921fe15f58020e23673015d9985e977c5185. 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/RUA1D1714919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf496d238dda07bc350f97b31a13970860646581ccafccd5d06e5fc88558d3084. 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/RUA1D1714917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253c34dea77da854a68d87a7dde7c117233c7c140563e44dd4076cc5c4ad3852. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:43Z), 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/RUA1D1714887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d193a10f5098e421fdb1ae1918545f329adebac2db3b6b24311d0e403d2f5. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/RUA1D1714898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8353bdb7418b4402dbcb681292463def07286b9b3e48587e243743f68b59e5. 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/RUA1D1715905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013de2afb10f6ddfdde1392fa564ada19cc8d6429f01d7c88612671a5405eb26. 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/RUA1D1715915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24f92f11a955ec7b1f6262b90f6d476f52e8c24aabdfbe8b1f21d4bca93d226. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:40:50Z), 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/RUA1D2366184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8006db450ef2a25c61c98815b986be9bbafac8c07d2115fd4361c3ba9e5a1. 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/RUA1D2366186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723526f9f456db077c180e0857e38eb34989dcb500360a73acf05c822fdaf1da. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:21Z), 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/RUA1D2366198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e41587d9271875771cde77fcb7c3f5923436df7db21e1d73a6d7c09392e490. 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/RUA1D2366210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e22c85ed0adab436833ef744dbf616d5bf570da2543bc3a562f3a723af6ec. 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/RUA1D2366212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3f26c4a35c541e21e0f849e4d8cd3f8277eb6adc22886b4afdff0a8647b794. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUAGT2359952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc9136363361ff45cc1ad41f574ad2e52115ee030a62c062504607ebb54ecc0. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:36Z), 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/RUA1D2438109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894e114eb64549fed9c4e2b5bc6407c778b446286484194c0957b06060aec14. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUB732075160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb598782eedfb3281d2bb162f2a7fffec8c2413c19931032169e16ac004a629. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RUB732075170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a9e30e062ac60e0ed262cf7086c090a599ed9b3fa66222a0b6b0724c35ca17. 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/RUB732075164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613481c049d832e001ab6efb1f30d285182f6163210aa527cdc4a9781ede49d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/RUB732075162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617ba14ab789b50454ee9a24f58aa66aaff785532e0cc8c176e7f76d6a83ade4. 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/RUB732075166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343460c5c3d6452058ef16177c1bb51eb510aa5eede5be2e119f815356662eb0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:38Z), 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/RUB732075168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12f50d0cf9585f7553e660b810648615c225050faad93ee6a5a4cd6c9e660de. 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/RUB732075180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb924170627f63a5aa977032a9687930a1ab2b4bf2d1d1fd089796c668a873154. 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/RUB732500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf82310ef208d05e527f91cb0e648c1310df337555f6696541709fc2d189c8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUB732075176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036525b8c480ba4fa163d5df68c08b2431ae651f8d35572a9d3004b4227c6d09. 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/RUB422300638.