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 0x974e2ba4770c899bad5026298f81c09d786fa8f7203699eacded1d7e06b7088e. 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/29555d7b-cb47-40c5-ad04-8dcf7847a1cc.json and https://artists.proofprofile.net/proofs/artist/29555d7b-cb47-40c5-ad04-8dcf7847a1cc.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 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 0x0d23790ce29397cbea5581aa0554e36f626ba155f5530757c8381391217ea4a0. 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/NLP431800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adbbad5de391c24cb9b2a638d9c379a216141246f82da3e5fd8d868ea84a948. 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/NLP431800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd4a43399c6a54f2d5010318b9af1c9744e5a7643c2b5cb4898531babbecaf6. 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/NLP431800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6dd70770c0115adc4b4073add2658c91ff0f6c56fac1bb10802ae2d4e8b878. 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/NLP431800227.
The Free Zone Soundtracks Vol.1 & 2 (Fred Ventura presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b87f803669b566ff85f8cf5fde0118801574246236a2a037fa5df2d79cc5792. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/NLL560801394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c93e525618af22d4abc6e9690da95a15fd8d86b891d59b91b976264c947f20. 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/NLL560801396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ec9823a9ebc3cc132fa15cc07c0a11e357c240dfadc2bd281d6fd1f150a8d0. 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/NLL560801397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a236f57e39c9e75f9c32980531e4afa59f969c3d79202616f23fe662853b5c3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLL560801399.
I Cut my Heart Out (Craig Richards Edit) / I'm not Ready
The Years (Go By) (30th Anniversary Reworks)
Future Unknown - the Lost House Trax 1988-1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a478730fa714391cf2bb96bc210bf6ed2f8217f358186e82a643299e0d0ce. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/NLP431800092.
Rewind Of Change (Italoconnection Reworks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc772b6bbed412a7c1310838079ec58e00d711e9ed278d0de3a0626d9ae33120c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ES5052300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a08b380020d17192d9338f9cd83ba2b25c728af6ae1c24b3713757008ef2dc9. 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/DEA311402901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50102e8f503cb75d0d3e0f06df5beeade5612802a3b0ea57de038b5137506302. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITD000400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2f7b4d18def0f369555e6043018d81c4dd654206e6b003d7f20021a317736. 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/ES5052000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b907f38cfe516235eb6bacda758e9866ae5f4758eaa1bed639dd47d88de1ce. 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/ES5052000046.
Follow Your Instinct - Italoconnection Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4095b6a0de4f46dba3f0204afe517ec6e23d999501c749dfe571927111bb1f0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES5051700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19731fcff3a8b7640e59f86b7cf491556f53c06ef5dcc5c02f4fdb3d1f2fadb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5051700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d966f47530566408177f07035b897b1ca59be3a976cddb827c5ac8a4f1b8fa. 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/FRX761536723.