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 0xb615f3899b1d638816c68e8b7f73eb88f36837a72ecd9b609c554bfc009cc761. 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/04f2aff2-a129-4496-8b9e-9cd6a0cb2a1a.json and https://artists.proofprofile.net/proofs/artist/04f2aff2-a129-4496-8b9e-9cd6a0cb2a1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music Mind Incl. Tiorted & Canty Remixes
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 0xc58ee3af16720e727cbdd51c0ea8f8d2d79f65b2cde8703a8e15df3dc02298ef. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/CH6542154682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10d740d63e7b5fb09197d170cd4346c6d6d49ad86c3ba0f29bcdd7be3bd48e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBKQU2283819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860a27aacf92fbbf3253b38e44d7a7f7597bd6bc704d20599a3d8440afcde4d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZJRB2295952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af881490eeccc7bd6d95e56fc1d32f29e9216c1d6ec00f425feea576fd9bcc4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBKQU2373698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688cbfeee09f23027f708d78ce0a5ee1f43e50f60ca1aca1b25fb8020f7addc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBKQU2373700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a66f0e49b5fa0bddeea573056d28a2a50d7ab0bce366cca725971858547c7. 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/GBKQU2387785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef51b1cce6a7b76a82da7c8a0f5b917d3e645ef411173633c70811d5b97a70e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBJX32294054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955e774bf5e6755f87e1162fff4aad223ca7c297519db27645fac57c3e44c559. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBJX32294055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea50f6b6c4d1842175b6802dd432dee44f78c6881a39144f022982d2adc1856. 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/UKU932481867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85978370f7ef9ad912f09e6b72518ab551da145799b91a627eb698e053e0bfe9. 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/UKU932481868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e422644549d5a9bbeb4cd7c713450462ed58d520a3b99e22dfdcd754cfd7c77. 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/UKU932481869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1619ae18095c07a4806525443ec27fb557588f9c7fb36538e534f43d35cef55. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBKQU2497529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee33d951d206c0a18655199f888b6e09815b519883bae83d42cd7f128ef350. 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/GBLV62419153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eda50a753885db15a08629d9849852dd771a0b6d7c4f84fd3e6249031d95cf. 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/GBLV62419154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a66f0e49b5fa0bddeea573056d28a2a50d7ab0bce366cca725971858547c7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBKQU2387785.