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 0xf7dba47f6be09c6902e24abbafb3850d3e26ebad85c7c376ae4652657b37497a. 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/8a91e1d5-ca6b-45d8-9a6f-f803d7087cd6.json and https://artists.proofprofile.net/proofs/artist/8a91e1d5-ca6b-45d8-9a6f-f803d7087cd6.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 0xdf3743798635a8be4a642cfb86fde7fc3b6a25960913f66105da92b1482b346f. 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/QZHNA1969680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cccb40653f0907bc3980fafe2b8c6c5407f877144f2392e8bd6f0a3e75a541. 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/QZFYX2137378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ca561557b605fc86ea4cd2dca667c047e6a2da308bf6ab869a1e1f24383f4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NLT2H2300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b93551dfba63ef271466426bac9d7fda181a2a5ed107e4b13c4f6727e6f5611. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/US83Z2311512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55ca1735cf1116492cf4a0186d2125f47394a83cd7dba77bcd8130b71b3b313. 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/US83Z2311514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7807d95b93ed05010a1ee3d9257ae0d3406b3171705b44c483403d6df557c63. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZMHN2346953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9704650079225ae75f32eba5a472cc1e041278c2ca94bbbcd778b906f4d478. 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/NLT2H2200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44134137d26ec7bff6d36341351d6357c49a6d09c84ff70bef516117b830058b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZNWV2127512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066bd8ba9553e582d92cd8340d1ce1fce2821a8bca7c177b084b316c6b98215b. 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/QZNWV2127513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f97a7742f0bcee4e0f7c26ada2b04fd4e0badc781adb2edd45e6fc4f7a3dbd. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLT2H2100587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3bc2a6483cf40e6fe1e6a9ab6483e7c65654838addfe6a09cbe0faa57d006a. 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/QM24S1838001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6417b58b6c732857537026ad792e6e70fcd1bf693ff906b3627487d35c5d10. 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/NLT2H2000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b787568ff95301efd0e265b59ef09884ae648bec8ae2e4d5cc236f7304cae24. 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/NLT2H1900112.
Colorscapes Volume Four - Mixed by PRAANA, Matt Fax and Estiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac981cbae544aaf5ac2b263c43538669de22780f6b3623fbff2738653f5bdbfc. 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/GBKQU2282618.