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 0x483a00b6c4ffe6ab259a3aab92a18452bb07b5b8da1ced958e7ca73dd931a0c1. 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/0ab042bf-7733-4b09-9f42-333f69c90242.json and https://artists.proofprofile.net/proofs/artist/0ab042bf-7733-4b09-9f42-333f69c90242.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 0x869580648a963e6de4fb23a18fdc83c1984b92ced0da8b46dce62c630f87e67e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBBRP1881605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113713b5a900df655604f9728a32dfc4bb628ea7d5baef10734b9580e7f31f76. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GBBRP2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0417c79510b58164116d24beffbed0dbf669d3a3fa1cd5bfb3b357cf10303. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GBBRP2200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c41802b7724072ce20fe90f5d2e3d04146e5a89480c33f215489cf313e23bf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK9AV2303450.
Another Knock At The Door (IYEARA Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725d645571790be395993bc8c94961f9531120f40644feabca9761af961f354. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB9TP2001122.
Sunrise (Always Comes Around) [Girls of the Internet Vip Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e13e251451a91ce629386292b5a9d8f3a0c327402cf9d9344b0cd4e5c354a5. 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/GBCK92000005.
Sunrise (Always Comes Around) [Girls of the Internet Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692aa76a5a626724d3e678d0116a6cd8db4439b098477e7edbaed57023a92894. 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/GBCK92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86532a6247142c6528e569d49a1eb592fcee0f89acfe689d386607dddb67dca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCK92000003.
Ambient Sunrise (Always Comes Around) [Girls of the Internet Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b658ee110e2737fd94850dd64e935141d4a2296e22679bfd41d5896e1bde8dd. 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/GBCK92000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31ced4d2c9d6d8a460dc2bdc4a78a0475e9ddb4c64e745dd13dd493dde7fbfa. 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/USDM31300072.
Global Underground #41: James Lavelle Presents UNKLE SOUNDS - Naples (Sampler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac37e636d9497512df4c6a27371efe69b1063baa432eb06df3beb66954b540f4. 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/GBHFW1500021.
With You In My Head (feat. Liela Moss) - UNKLE/Redux Reconstruction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb249adf9d2c4fd87aa2df6a107f08bf3d52d7f0055c2d22f3141b2e1743214c0. 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/GBHFW1500022.
In A State (feat. Liela Moss) - UNKLE/Redux Reconstruction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91023df66c8460b905cc21d999b959679ef3ee64cc76eb16a6df050d09cb87eb. 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/GBHFW1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17631fe9ecafcd867ad6eeb0afab5ad1637c3d825ed08d10a0fdb2e28b45c590. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USCHR1324525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c4c3c70216ec0441b4f324f12106048895b3885a8ef36ec72d22ad23cd15d. 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/GBCK92000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a78f6a092e8b5e6208a67337d710d92609977a1f21256f6b00308e49f8fe7. 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/GBCK92000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97358bfbcb195991a0cd63f6f509446c18c1050770d1d9a10167e217c69589. 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/GB7QY1700425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e14e3e3477fd348c2e27a8bbf07263c86ef16394bdaf9341ca13e7ea200881. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB7QY1700435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3c5b6e4b7a91944e859a2d9c93e76bbe22a7f25665d4602e1626ffcb41d95. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB7QY1700441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de848955bb6791128e904d7c22dade8f631ef1109fb799ab80c3d0c030a9910. 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/UKALE2002007.