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 0x4d0aeb4dde3102e8f448ef2076ae25a7f73c7d664d54f625f43967ee5bef7368. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6c65574-26d2-4354-b419-08a9f218211f.json and https://artists.proofprofile.net/proofs/artist/a6c65574-26d2-4354-b419-08a9f218211f.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 0x668ff5d6ce7931985a045e77dd40c76f4b2e34b747243565cc848c4e9623bebb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41871163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f789f102d22d26cce454dddc45c5a10fd7d74a5a00b68baddbfb9ecb89f23. 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/FR2X41871165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f773a047b065c2eab8c399336c716f1cee9e7378819dd92bf21b0a5e1a2893. 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/FR2X41871171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f712058ef763ec604b8f742b1c992a22ef59ccd2248bde07f8cb43b277da74. 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/FR10S1954922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32264ec9fd9dbb533699bee14ef2790561c2b9086e7d30ca965abfe4668e755. 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/FR10S1954923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914368f39f10d2517c689bae75eeba07e77fedeea0dfa7439224d81db9a30b89. 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/FR10S1954925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769457fadc53ea6d115abfa4516b527ec051d9b82b4059c163eec8c7537285ea. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:06Z), 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/FR10S1954930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb888341b94cb7fdd3cd99948e8426758e92d9865c0b4de96cb68fc6a6f4ac61a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/AEA0D1968360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e5d233b6a05abc467a6307dd9262d288950813316086199c1182cdc4f9037. 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/AEA0D1968361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b9a2029fb7d25d44a398c4c0b4c37b1bdf74fdb4baa5156d88acc31838aead. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:53:03Z), 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/FR96X1910733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b1b3b81f922ae9af9d642e32babd8fd44c5ced522a48953256d6692ce8ef9b. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/FR96X1986233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8368b0dfdeb603016b0848669d8a97cdae5d5bea3dd3a0cd987b6a5d181ee6c5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR96X1986235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa161b507cf05375d2cb0c1d4917291343a38a1904a613f93f822b31124f601de. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:50:19Z), 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/RUA1H2063377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dde706b39245539a06137457eed77e98b4d30c3a06c2d8396ed579c2e898fbe. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/RUB732006582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d161898473ec18d564d95c3bed5f1e8acfe93672b8986e357130dc1599fc037. 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/FRX202067677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546da8afee25901874435721ae89d91823f969cde6dd66d0ae704848cbd68a0c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX202067679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad1ed936e4d6fc321bd19709282af9ab52e4993e6e8959609bd486b643cf73. 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/FRX202067682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076f0489ed1a586e00a7b6efdcf78647b79dfd4da2d7519d9a53b4bb82b390c0. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/DGA062067550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88958c786f4f873dd320b2458b8aa3a3361c0eafcea04fc0fc893a51136106fe. 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/FR10S2153053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf306cda537cf5184930792cd869c774a65c200d469a0c567ccad38bd3d63557f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:33Z), 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/FR2X42175047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d9f50588d262f2e3866b118c8cbb820709661a6529320b0f0ac8690711ea4. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:29:39Z), 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/RUB732018415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aea2cf6061b70371f2a50edf8b0d20f8e45e02a485bd73dc75d879a27654740. 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/RUB732018417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc14602b31743398335d3c45860a361491644cf608c9bc26c2db6c4b4b8e83fc. 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/RUB732018421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca6a7b0f622293a4002baa8450b7a438dc0f8d7c0930e1e86013f825f08dc1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:05Z), 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/RUB732018425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448e4190a578ceb5cf10af194b2c35b9108ead4063f9d4ca018ddd206d7f467e. 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/RUB732018427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118a8005fa3754748751022780a9fe9254cd96f7f1abe7eb6340accb1b16987d. 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/RUB732018431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b326ac65fccb15dc6576beec35fecb22874535b1e6ad746adb396dbea50295. 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/FR96X2158222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aa75de03902d130f1212dd1b5cfcdfb732652dd9bfbcfe1b3295591e3e54b2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/RUB732037390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2531e3d323fbd8caaf4defb23ba868ece09f5606933dd5514709d6f430cd9. 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/RUB732037392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1f7cb39f59fff9b12cba82a6d5af5c08780043814c8ec7b9a246620c556a0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:18Z), 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/RUB732037388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1f7cb39f59fff9b12cba82a6d5af5c08780043814c8ec7b9a246620c556a0. 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/RUB732037388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2531e3d323fbd8caaf4defb23ba868ece09f5606933dd5514709d6f430cd9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/RUB732037392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7550e21d08aded81aedb636e4c34dddfc2445c43648574307063e265a9de0606. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/RUB732037398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e05996ad2e58551fc805ff75b25ac4da7fbf84c76b4b65b577f6e120078224. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/RUB732052067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59776c69514c75d1721b3b6104823cd2f39d5afa635e64d17736b8395d790088. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:59:42Z), 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/RUB732063439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc13f3a4c1dc11fe33d2e7e5361a4e6f7b57f35ed49b1b06eecb39b04d1e081. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUB732060325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562024ea7dd74d813522852a605216a014daefce8a13971687df62b4c33e1bf0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUB732065089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc56f6f2503e91a1170723daa58cbf388e688edb432bce16a6572a423090b1c3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:14Z), 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/RUB732063684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f9dd1d2429355f5f39ddb326f9f686ba4a546e60b5caf5abe431c875eb8bee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:55:06Z), 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/RUB732080696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202037ee7a6d7455598e5917948511315fe6659bd1e7eabc6ace303b981ab10b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUB732084309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bf3e113e455847c9824bcddbf37c6825f20e0aea9e0e28bdce3066c42d1247. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:59:14Z), 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/RUB732063696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ff31b4aeb0965a463537041654e8733724ed1631b86e720e080947456714b. 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/RUB732079707.