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 0x1695666453096dea41da7c3e792923d294c9f41f67353e695c953d4175a5b61d. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b241d1f-4285-48c2-ba5f-4cfe4f793496.json and https://artists.proofprofile.net/proofs/artist/9b241d1f-4285-48c2-ba5f-4cfe4f793496.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 0x7ad85bdb724cf7c7183ab557d082edd7b034b50d98db2be6f0f0686e0156b4d3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:32Z), 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/CAGOO1969138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a4cd7d5ab2c5bad29af5e6acbbe5c600424be15ce74a7656e0212972a7d785. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:24Z), 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/QZK6F2285386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1f77e9d260b9bf5a25516e0f14f3226837986fcce8ea6556055661fb43dfd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CACWV1959340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663c5dcfc2c46ded7b8fbe7b546a176236287eae96deefbf591e0b748437b9fa. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6G2242159.
Last Time I Dreamt of You w/ Learning to Hunt
I Was Wrong (but when's that stopped me before)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9682d072e13c9d9a2d946c63b29b443533e5b021b575c53646c81ae74e932d43. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:32:38Z), 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/QZFZ32467424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7256eca00097e31fcae3c6622de6aa34027ce7321b5eb2dcac634158e2458a85. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMFN2314579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c6f8076d948d76e7d778b05e5300bb3a2bb5a85b8c99b347a19885984a584d. 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/QZWFE2339947.
Casino Lights (Polvo Riff) w/ Dumb and In Love