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 0x8a8dcbca70aac5619338657c05dc478378403c6a28975626323e8bc8b9e94d38. 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/28bfe990-f94b-46cf-b080-d279d3ccbb52.json and https://artists.proofprofile.net/proofs/artist/28bfe990-f94b-46cf-b080-d279d3ccbb52.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 0x1d07caa6d209b5e64a414e8386c6f9cde94e10f9d2116dd835e29fa37fd4f1fb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PLH921300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2d1c0f774761e388b1e62448ecddc86b35c32390b813fab2fb0e6e785d0c86. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/PLH921300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d8e17e432f4daf5ed413b66ed643495aacc2f6040e1fa14cc228c3c0babef3. 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/PLH921300778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd5d781658950d6d4daec9e869e850974c6a4682bb38a7ef6f16f77792a1128. 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/PLH921300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab81c229dbb83b21d3bf952320058d99410f80596dbdc94e4eb6d550392ae8d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PLH921301928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1676eab82c0350ceddec83e0ba93c08fd69d8ce81f19ebe54b9b7c0e016df606. 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/PLH921301931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026b010d9a997935115dfefb672be942c1981b9e6f1268c02fbb77177e78cb5. 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/PLH921301934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9f670f9eca27f63eebb6203876b08c356be6005309f7a2e44f521b66ceeef4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/PLH921301935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5301a5fe4a538958c5f80958efe9046f4654d632c54928d4e9d478f193f4c9c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PLH921301937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05f503de5ffb7008042808d38cfdb1dd0de54cf58715348a117d5617fb8fbb7. 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/PLH921303509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea213d510b723e222ba0326b28d74a0116023bc7e4dbf148c5d45e114e570c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLH921303511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff7009b40478868c67772208d535cee800e45b634017209c45cbb157779993. 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/PLH921303512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab784668b5db32722ce89d92bcd6565733e7fb33ea952c3f1e07c6657ceaf571. 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/PLH921303513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d55ec02170d8614acaebba08ef815bc924b1f8c80e60579c4e4af7870c365. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PLH921303518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb351069efa1b57fd1682c8ff55d9fbde607c46a46f6116bf858528790a1da0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:04Z), 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/PLH922100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eaf50e21628e2a9423e9eafc426512b031893c2acfc67ea9a006ee6414fe04. 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/PLH922100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb469ea2c29397e73a007f5cfc66f9e0d79c777eca55cb81f871ca35502f1cda8. 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/PLH922100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeefc691ca93bc361ac6915fedb17ad620757a2bf2e7346bfcdbccf0bb94ef0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PLH922100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b1950f1a8d0a1c5e0c2d467c1631188fc6a6b335301a4e24c276a2d260afd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PLH922100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90505fa625ebd5029717206af2c2ac31167171903f7a3f18f3f35ade0172b5c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/PLH922100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f4917a2080c9b2d372fd121a960043d3857214562a6ee52d0aff7efbe70586. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:47Z), 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/PLH922300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13c7f3ebab61b22d0675bd8fdb48d0f818b854864053e14105cb5e31dd71f73. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:48:55Z), 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/PLH922300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0310086cc5918cae6b64cf7f27e7a14fc3ea32a27f7460b2a35ddb522adbd1a8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:24Z), 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/PLH922300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f00ba891434d957513b155cc00599975545c3c46728bf3702137e03e40d08. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/PLH922300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947fb1947e97866a5c7ed9ab9448bb64aebbb0c6430e8622f0da0a57e5a1a92. 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/PLH922300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f4a1319d40527aeec78761255777bb7f3608f68d8e6480fba2c1ee1d6dd1ed. 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/PLH922300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfef7a53607d0786bd7cdacd1367a0da2423a3ba6b44a76744f23e4254b49002. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:55Z), 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/PLH922300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb75c3da624a9b4f6699ff381acb4856d9bf9e5dcb250ade84335a8900f11d48. 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/PLH922300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9529ba1a56feb45c293ca2fb9fd92139edbd0da2991716f3565a75b7bfa1a0e1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/PLH922300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2338e7a485fe097986118939de49884a7cb6a19c7b0ea888758a516c05e5a727. 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/PLH922500022.