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 0xaeed64757d4c7b588345451c8842ee09976010bae1ec1004ad0e2c7d5d520cbf. 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/043815ff-d329-444c-bc27-475c334bb062.json and https://artists.proofprofile.net/proofs/artist/043815ff-d329-444c-bc27-475c334bb062.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 0x14c01947a26c0f741a7934d0b6cea043974af0cd07ea2112fbd077c884e9ee6a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USGRX1202705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2c70660c5d95f487cf8569464409fac7ccf8172e0787caaee85200b21db9c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USGRX1202706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2238ac9eb8121b6b3062bce8e08bb1e0f0e7c8bb34d7d9e5b9dea632298d8af. 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/USGRX1202709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04edd9c1567c7f44e052d2121d98b5545ad6480bfe621b08605b04f7ee598f5e. 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/USGRX1257903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d2b58cc957af4d90f960025eaf343c4b80262ac5b181e8c6fb53c971752f36. 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/USGRX1257904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1bde89b71cd52f140b6c1f944826bf66a76030c9690b7e462c208ec81a2e1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:19Z), 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/TCABW1495867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d85bcb8535d0b8a1ef02cef68bdba108e102a2a266eb893d2c02886481b5bbb. 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/TCABW1495868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc512bcc150bfffea1aa4e5c42e55b12b5ecb7d2163339e475d688379832f46d9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCABW1495870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d6bb7c32fae4a46d57a586fbc5164c353e0ce5c5da1bc24fb8b8c73d589c56. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCABW1495873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f773faf7984fe672c107dc95e04f6a1b6ab3f0e0f22da2059cd8597c43e7c1b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:38Z), 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/TCABW1495874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa46ecd0af69ba369f99df3be84edacd0e65bfc46f7d9a89d3e16721875e811. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCABW1495875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334bea9c8a341e454e78834a11acf93a0ee27cecb7904d5c908c6fb554d99097. 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/USETB1800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc494e8b816aad934c5ee629796ae256b2aeee9dfde75ffe9d57d1421dfcfbd67. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USETB1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334bea9c8a341e454e78834a11acf93a0ee27cecb7904d5c908c6fb554d99097. 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/USETB1800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0d0c144b256843608e8f7a21b4321b9e2c5e8429dd6b252c1c83d2329f30d. 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/USETB1800060.
Solsbury Hill / Icecaps of Pentatonia-medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc7a8acd09d780bb3b6cabf177a1222fa447860ff66697def5cf97013d8d31a. 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/USETB1800064.