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 0xc2cee2f4a76ae7a62e1f91c8982c50e28ed9b4dad3cd32547373723abe02eb82. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6346f414-aa46-4a7e-aa52-9e8ea8cb0b2b.json and https://artists.proofprofile.net/proofs/artist/6346f414-aa46-4a7e-aa52-9e8ea8cb0b2b.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 0x1dd8a4685d040e68255aa5de2c42541169a7f6ea2134aea452ed0dbfaae434ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAT560500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb865877c394a24ccc2c5696ccc381dbf2105b52f77719c10262e6b01d33ea5c8. 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/CAT560500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7715f9ef100f09ebc5cb032c14ad4ecf5117018e6326984cb0f8edbf3b452f. 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/CAT560500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c3dcaa409f0a662e73c8361df1c2346f2a94824c499d0cc7dce26fad93ddb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES62590312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fddf568696d066eb62658faf634e9515d6015a5e8b9b8aa4a32f891fca41908. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB52486184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227cb6be394aa3e542a78153a18d5eeb41a6ff940e38ee6594ec9d18e9a6d3c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM22325063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad1330757b6706699604ea82a3b4abda0681fe0ffb3c243c86de42d88b57bed. 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/CAB580303004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91804ee09acfd8f77f2192969d4e76151f7e153af3b9223184fdb6fbb2874ce. 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/CAB580303012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb38e6271d3c4e372377e675106ceb050a2605c2cdc1eac73f6b633a0b4b1f31. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAB580303016.
Bomb Beat (Ruffneck présente: Bomb Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc7f9e553021d93184f001ac93c4ba3791f3247b606b4ee0e9c343922190cfe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAB580202012.
C'est tout c'que j'ai (Édition 20e anniversaire. 2024 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6cfd792dc91ec92e617ba749cdcb0012c358ab626aaae7bf485cf638c453b9. 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/QZK6J2506052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee93c6d99cc2eef3267063312a772d8a5614a1feab34d8854165dfa83cade70c. 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/QZK6J2506053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb790adac356fe8cf999dd6a3e3226e5aed39d457974050799e09c87afe3809. 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/QZK6J2506054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc638f8894a9236424392bbcb78a10ef212adcef9b4d02b9f6b1ce87ac7c972a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6J2506056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9355699e67c3f886da5427411ae5287b773a673a80fae96a88edfa0979cf5e3. 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/QZK6J2506057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fddf568696d066eb62658faf634e9515d6015a5e8b9b8aa4a32f891fca41908. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB52486184.