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 0xbd5bf7d7b6b971b3c5589a9983b24424da4077ce876df8c22c1526253866240d. 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/a627b607-19c0-4560-8658-5824efb08fb0.json and https://artists.proofprofile.net/proofs/artist/a627b607-19c0-4560-8658-5824efb08fb0.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 0xe6b13bf061881296e242dc13aeece085b67d2db2518f03d8cd4abd701021fa8f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2357463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462e5848c4384ba11b32c363dd0b339848694f7363eb0d593d4ad21169f2378. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6P2383663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c3dac8649415d9a3f1547dd0fbdb7ea3a76347f4f7a0c3f7a17ace55feb101. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6L2373082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0121d2a2d8ab3f1f7842ddacea9aca9d8c62b4fbf14f5c7158f7aaebb78e1ebb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHN42422488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d87036f3f690f4b3f4aa1ce67e47201e06d1c58f472a92181ef080ec0ea90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFQ2473753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ceda34fbf4228ea291f2e4260b02397b72f9aa7dfa92a9e54fe1c3c99b8b7f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7N2504913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79748078c7f6e09341d6619279d5d78998e0f76fa522be7ff954073f08f74325. 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/TCAHH2360137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd16b6339b47281c0aff5c804841441dd2c0f259a7bb40673a22594c75a4536. 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/TCAEH1900723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829d90647fa5226e112731a3cb4ed2701a80dc5143ce349d97f0820430947bde. 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/USL4R2058825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb784ea33ee941bba69029112b1d8ecdde00607d900b83fe45d631ca5451e8ac1. 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/TCAES2041671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e5b16f763a8080e0ef844476bc7b30acfce42e386165aa788633b41b494633. 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/TCAHC2385781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5f7da7fd000f502bf71a239ec8c5a0f5432a0e72cd6824ddc7790e372eccc. 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/FR2X42459779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec2723c0416516290378dd485ff09ae555351acf109010f696173f26e9dd151. 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/ES75E2307315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b373b98cbb32a6032f26fffefce73aa70e6420d7dc479f80329b68fd47c6f1. 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/QZMEQ2308008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2972e3eb6ec3e253090c1b6b47e7ee2936cb9f7c9a897b06241f708aae1c4bdd. 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/USHM22160921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb784ea33ee941bba69029112b1d8ecdde00607d900b83fe45d631ca5451e8ac1. 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/TCAES2041671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5f7da7fd000f502bf71a239ec8c5a0f5432a0e72cd6824ddc7790e372eccc. 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/FR2X42459779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d389729858d049d1f7c7dd7ad6fbaaa8f6918be925a32c782ed4fe1ddb7de4. 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/ES19S2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4112ae539eb5f9c3c9ac5479b3e3a99606344fc5fa6b927bc79aaaf32bce4a91. 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/QZK6G2341386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646ab5b5228bdffb08739a018735d66d67d278aa580ac13984691c38dcb7c89b. 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/QZFZ22437350.
Sentidos - Dimen5ions & DJ Alejandro Remix Bachata Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a2eef231beeb27a79e8e97c10eec8f0d0e6d4c1079e3828546788b44b09cf2. 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/BGA471827043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bfeaeb689ed98d1f80d5a8e527ba89b88f5443ad56a24b60d8cd57022b1f11. 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/BGA471824181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a2eef231beeb27a79e8e97c10eec8f0d0e6d4c1079e3828546788b44b09cf2. 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/BGA471827043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fdff7f6e928d6336c2106e09d6cba8980456050299c2deeba5ec9d9fc13ee9. 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/ES71G2222803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829d90647fa5226e112731a3cb4ed2701a80dc5143ce349d97f0820430947bde. 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/USL4R2058825.