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 0x9678b2e10b6207f32ac6543079a07f68fd49c5b2889bdd0ce6d6369bc1975465. 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/bb0d5aa9-958a-4b92-ada5-dd3014883715.json and https://artists.proofprofile.net/proofs/artist/bb0d5aa9-958a-4b92-ada5-dd3014883715.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 0x9b1ddcf8a160e7daa4a33fe54de67f97ea765059a05e54387ed3feee222a2220. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLPF0604963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452b40595bbf77f4505e23c828e98dec49eec56694c4e104dc105d64356c00b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLPF0604911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad31b544290bc944a9d90d295b8fef2f1447566fc688ca06e41bde3de767fcf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLPF0604920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329158a67b60394977009b60518b9fcae709324d8ba78e8d1ed31e18d8ef62da. 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/GBLPF0604939.
Complex Channel Collective Tapes, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55894664b8ec71d0a67e04dbf0586289e9bf8173d9c9cdc477bdae803dee51ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLPF0604826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba98e9d6a1fd50b25f6dd3943fd318b9a7c017251c3c60f3dc2a18d4cf93982. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLPF0604827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14c090429cbb6748e1a713ef0c67f13dce4454a9e78d53ee25a9e42de454af. 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/GBLPF0604830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66da36f45c64420aad435adabb37ba820bdb6326a74dcdc4e1a93c33d2c605f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLPF0604831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd160f6ba1c737e28b341ba40e69f3f9070e20aa0bae9cfdb6ac7397aa495795. 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/GBLPF0604838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff0e6426de981a010af9321033406f517613c589ea01d48482c57fee27125e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLPF0604843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e2ea2f5c7c11dd702d1314cffbb6ff24afb02fc90414c479c1579eac0e08ce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLPF0604847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa106ad886564364193bffd9a4f197c6c55cc2830e8123e87eacc619e8bca1b14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLPF0604852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b55a52cfc56b5fd9c4cb8cd596fabc356b36b37cf4f2ecaed6f5f2d3acdb672. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBLPF0604828.
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 0x548532ebb13ae7ce6a19a501b0b5fd2f407f34984afb388a3358ab52182fa6d1. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLPF0604829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f2e3318cfbd09bcd2ba8ffbd8fd7ea52c12dcc70e0a8d7f45b77a16134b492. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBLPF0604839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b982eea8a5523efa3425a99cf63a61730e54e02359cda63486d0335e3d081. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLPF0604840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525dd39f0184a2284d1e20d0bc3ac3706c365c6b270b06286aeecba04fc2e7f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLPF0227025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629398c33285994fe38d2f35b40ca77b2bd36a87f47582ad784bdad4e1d421dc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:26Z), 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/GBLPF6804692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a794a3300a0643cecbe9037fe2d14f6aa3cda585422d39fbd024d75e064d7b. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GBLPF6804697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32ec70da2a55d60bbd7d7d90124f227a7ad4f0aa2236198e13d5ba49f2781b6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBLPF6804706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759cd4d5659b0d5a0877fffbfc6c542ae3443c4f5aa0d8dd2f1b4dddce11e5cb. 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/GBLPF2401259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311789061a41b1d86340bb603cf17065ae6e4d04ab15ee2b50b598f9fa9d72f9. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:42:22Z), 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/GBLPF2401260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03b64897b98c0c42697f50887aecbc7c653e5fc67b7a595efc59b9494d9f31d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GBLPF2401265.