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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65514cb5709e3785500aecc40b741d5352c6329054f36fbdae74a7049b65f182. 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/649ce997-a6c9-4a13-964b-816d80932828.json and https://artists.proofprofile.net/proofs/artist/649ce997-a6c9-4a13-964b-816d80932828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(Your Love Keeps Lifting Me) Higher and Higher
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e40eafa3ef89ee3cc20bc4f118541d362c1a22abf392c25d02f5ad1b61cc13. 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/GBPS81514491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c525b078bfc816b7d0a5509954802abafbbd38bb6b43b98cb39bd2fbf8f03e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GBPS81501166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584eacd4e751759c253671b561ec870492380ce25c70b0f9bc3b530dcd12e8e1. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBPS81519817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568ba90b4919f5c6d11ecd82773452421871af0325050dabed33419fef563f3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBPS81514686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc866bf70b858d6b10bdd1a7bceb1411d7f83d35bc818301c1de1578bf00141. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GBPS81519811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232eae4808afe15bd170ec24bfff7b708628bd11b5158e593747eece5eb4e0d3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBPS81519809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e80fc50f77b81c06f7db0de6ee6945c07bba0c4890a017ef07302f54e06540. 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/GBPS81513737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10026985edfb6d3483a32719c155cc4367077e535313dfbafb20d7d6292a27e8. 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/GBPS81527516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd28ebf086fac57f582d3a533b0b6e4d8e1d83aac89ea4abbb0c47a76fa1b2f8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBPS81527533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04bc1bfe531b2df71bdfd71ddae3166373f18ff59906f38a5ef9f1e4dfe414b. 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/GBPS81528171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81f75798de36306fe696d7efba3eba9781601fd9a74b9edb26dc8ce634338a4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBPS81514487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f56118c5aa291dae46e2e90b724dd7324e92954ee098a7faa5623eb50100d4. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/GBPS81517385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa759aff763c3f1177d3e182f8beb4def191fef61a0c1a309d8af5575b8737. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBPS81520044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e710050e017245d8db0c7629dc339162db6e9721dbc4720506466df090558f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBPS81513752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528ee4b6d25998d90b663d55c7f3061ffaa4890bf24248d15341f7424ff5e040. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBPS81528331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1c1e3988f4a8d27e4a592238f6368f54e8ca6d63ebf1e3107373b24383d7d4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBPS81518236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d0923a8e8f7bc4453e08607c5fee6fbabb64fe7ed8398f76af5aaabbf05b0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBPS81525966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe695a1ac28c85186060d9e00103119fe3744530828477f04470fdd2fccdfb8de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBPS81513738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58611ef3149ccbbcc91fce0fb6d1e01180e49ad800bba5ddaffc11b79e434d56. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBPS81520052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49dadf1bf506cb32a0c1e8dc8713ee9652c24426aae26c28da62a0d0c996f4a. 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/GBPS81527726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36d78844725b9d9ba70013f4fb351a28a8be10ea00f4c7f1dd5cb8f43a06edc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBPS81515553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a51cf3cecd2c1b8bfaeef68bab174276f52076a79da78a9e3eec17c566087. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBPS81527580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742939ca687ef3022e6294951c674ac3320e700ec1646ab876bc54614b7a80c3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GBPS81519958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3494e90dc916c346174d9a53c6f36d4ae92e8a3c24c4aac5e49489f8959514. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBPS81520047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7f327bb5f55de5cc8513e0fbe8d9853bbbeaa4cf8daea4e3c0e22102db4c2f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBPS81527585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a35358e68b2711ae1d219bba0502a3ce26ae7e0efc378c4ec42a6f2f195fe. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBPS81527519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b06e57f15b57e05344fb9511397cc58a4f566bc2425fc8c8938e3acf4eb720. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GBPS81528815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96db20f34a7dc3a8ad7160736511f8e64da9a57e95abad70041706fabc4344de. 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/GBPS81527628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd54bff59cdd45ecb189f41d72b5e0508330869b33216c91ffd176778c99b3. 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/GBPS81501171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58442652b8d9df68630dfd28050c1889f89ffbf865c05e6addc4effcf5f8afe0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBPS81520035.