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 0xa79809bf7bb8e7367303c6e3b48298cb487f790c901e1f8a584fd41069dbad5b. 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/b4c5d5a2-06e2-495e-bfaa-c0c902dcae6e.json and https://artists.proofprofile.net/proofs/artist/b4c5d5a2-06e2-495e-bfaa-c0c902dcae6e.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 0xb4a8529049a21e1a5a229391237dd4d801b20fd1872b779bb8190bd043dd43d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTBD2304334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203edd78f70841939b046145e5a449782d8198854be51f208f919183df25a3ab. 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/QZTBD2304335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c86aa8e722a5e990cd7ed1b6c27653ce08dcf8b628940c39a854bf80597ef. 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/QZTBD2304336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811776e24cdd5902c1823033373ad0ae82c2f10ddcf120f256f06ea5cdeebade. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTBD2304337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7ed106aac82d710de08c0f9e2c1a1eed66bd32b4c78ab7624e456713526c4c. 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/QZTBD2304339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d005d76b138d8047d1a5993d39181ee7afcef37ee2175574c60ef235cf52b0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZTBD2304338.
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 0x77b53a5b307fefc8edd67d6fa1fb263d32cd812d9e37d56f3001a5c8691e3d14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82302004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd243d2d0d524f09f395db0e9caee8d385a7fc38c4b5e40aaa6e4b6b70eec2844. 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/QZHN82302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8447f2d0495bb984cc88d11dc409619d5c73e8e1cdaaa57ba722e6ea69a521b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82302006.
Så Kom Til Nesbru Min Venn (Ballpit 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400fd8eecb417c8cfad6647643cd4153e742163bd907b30572254d4834538c8. 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/QZHN82302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e32b8ede1fe3733acb046f941a5b3116de0edd7b7d61f3a1c6bd3d1734db50. 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/QZHN82302008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b8a397833d93080f30d6c6500cd92c15febe87b39367bcce88a8709ea3ff4. 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/QZHN82302009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04f8e6dd527b3302c61c12e945ba3342ed1559a8d3013324bdc5d88e2bbec4e. 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/QZHN82302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1049c3520b1d2719cdf49846dd87efc4be04eaa926837ff25e8b431d2f6e852. 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/QZHN82302011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63128a7035ea58a40286fb4df4fcd1ba56db92007a45726e08203eb25127615b. 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/QZHN82302012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb93fafc424b6e0a32d6d93d38bafd1ba43d9f03d40c815d4cc7029ae1b3c01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82302013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10096210d7f753e1c3deaa230c57e63133f65f0e9a30a6e2ec5bf6a1ea9b9c. 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/QZTB72336362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe11d990e2bf281b70b71a8915da17a8c9fbf45b3bf5f8900683485f8280d3c. 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/QZTB72336363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610ab14bee306f8141c06c78b05642426810eaa37decb0bab25baa34cf9d1f5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZTB72336364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d896cf791aaed2577f67e2704ddf350215b90a57be85e9c16d4b83e4318da05. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZTB72336365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc517180a607a772d5c0bf1a01eba764ea99c037e67393d85ea56c47de3d7d3ef. 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/TCAGN2292577.
Hulken Skinner Over Byen (MOB CANDY 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3780e8ca1f7bd28fb41c863c828491f5d52b7a8e3f7dc86ddfe49ef964b70a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ7T2410702.