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 0x14e8c9e86512034e425229cc055305f3e1d7033d50f5287631f979cde1a52739. 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/d496619d-d34a-4d27-8cbe-58ce9f86056f.json and https://artists.proofprofile.net/proofs/artist/d496619d-d34a-4d27-8cbe-58ce9f86056f.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 0xd00099e5be893693002f7ba90eabe2853f2d9f29118fb341267f4680036328f9. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GBKQU2537612.
Tell Me Who You Are (ABGT576) - Pete K Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56231f96b19107514c9e4905ceccf99b4b6e388427213f1a12576e381e700cb. 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/GBEWA2402210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf32387ef23108f868eaa0352deaef503684504cf87f57f7c6a277d29ebb4cd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKQU2403896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6977d31b6cf09f6cd5a8c089357501c49faddf755fad5350b7b7b0218875a070. 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/GBKQU2313219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad520e1b900a2cbb4fdad04063530424d0be03bc1212a14f82c2a91e274548d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBKQU2366399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96573f5d087efeacd0a668f0cfb870937686dfbe6e716c7445b8e5a7b489ab2. 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/GBKQU2408323.
Tell Me Who You Are (ABGT577) - Pete K Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ccc40ebb0adaae906dd037a8e5f94a3adfe389a910f5beaacee6f6fd3d723a. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBEWA2402294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c11bdeee7b4f330fa4fe39e35140c2b0d218927cfdf5c1b773105db1fa99ac. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBEWA2400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd75098bec6f968ff3fca69b97595b64f59c00186b0e785dc0bedd11a7d83ac5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBEWA2305471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38c0dc9d605f0f3b80b25c0894c8e7a7f4f49ed81938674984783c2bc775cc7. 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/GBEWA2305206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade284a875b60cc2ff063191d4124d4325c74e8f48b889f648cd895d05426526. 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/GBKQU2439988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0705072bae0760bf5a2b83046b504cc207f7c60a225aef9ffb3f16120cccf3aa. 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/GBKQU2436774.
Tell Me Who You Are (Tritonia 468) - Pete K Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06553f6bf2e221515d5c06b094101b02f5e8cb38cc9c985554fb045de9114afa. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBKQU2426674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff5e70994d0114aa52c95ce0e6169df5b7b8a918fc72a1bb2547895b5e96b8. 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/GBKQU2390859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7936e434a7247f890225230d16daf545103305b5f4218db317613de4e4ed1be. 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/GBKQU2388610.
FYH420 - Find Your Harmony Radio Episode #420
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66ad59adf6c7a080f59c581c32784b913418567510c81b77aade83d622b6bf3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2495959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc8ae9714da9d8528a66460cba43b022cfe906ebfc78593abc12e4b52451009. 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/GBLV62418200.