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 0xf277f93223c084efada1bcbc7315f5ac0a91b21fff861a1a57defedb7ab52e9c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e928253c-eca4-4abc-a89c-17524b8550da.json and https://artists.proofprofile.net/proofs/artist/e928253c-eca4-4abc-a89c-17524b8550da.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 0x9878c8dbb22e4308259ccdea0a36665a42384e13d79ffc771a5cc1db0038ab37. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBBRP2200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a40f2e195028f8d9d8d628bd9906a1ca81dced18c3c4f6bb3d9e4b093a6deaf. 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/GBBRP2200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8eacd7d0785db357ce4ec0bda589824565dee416637ce1c88fb138b4689f6d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBRP2200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5d0762c5be4a93ac0cb524ad22f64e2f6e0fbd42e684f0cb17fc49ffefacd. 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/GBBRP2200689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edd6825b45cbdeb2d0ecc786f214132dcadacd1de7d60297b1b6df522c33955. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBRP2200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b807e88531f2a5f509d1a2da69884c959bc57e7248970c6a28410ef04f75f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBRP2200692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff03a21f280d97f95645d761d175a2d5187199522daf95ee5687446fc3a95a1. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBBRP2200693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c7817c6c78b94fdb70e72b83447ac1443b63f5a324f4e594ffb9077e9e5d78. 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/GBLYF1804701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b06c9bdb43f0c498aafbf948ffe7686688ca469ea2b518b66c11939fc6d81c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLYF1804703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f26be38bc482f2975a05ec10946692b58d7b0da410aeb09f89cac088b9a5d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLYF1804705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72db4f759abacb4fa77568b7b8b1caae8a1376d8a2cf4035ef38ffdd6a31fbc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLYF1804706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1ae86ba81a2e6a1f8d294f17a191b8ba2551bf7f6ff7d546d919e35aa4a8c2. 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/GBBRP2301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8eacd7d0785db357ce4ec0bda589824565dee416637ce1c88fb138b4689f6d. 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/GBBRP2200688.
Nella sua loca realtà - Tropicantesimo (vs fabio fabio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d7e0e5e1c4a9c331f8465b522f96e4b59aba0dd437ec006aa56ef1f4fd2f17. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITO0P2300006.
Ink - The Cinematic Orchestra Instrumental Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55432940f045cf27dbeec40bd6f02ab935599e239f3d03c0869e44b92f2e9683. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ITO0P2300007.