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 0x08a62e34cdfc8811c863f9de827a1d04db39f3865807f7768594505ce5dfbd37. 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/70ea8954-0426-4fb1-9c45-ff42c28ce0c4.json and https://artists.proofprofile.net/proofs/artist/70ea8954-0426-4fb1-9c45-ff42c28ce0c4.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 0x7f75ef000c24946df046d8c49098e42750b72d15471bd318aa74ad4838f15f7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FXQ892300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0861513189423210831912071348b6c5216db458e9236ff72f0bb14236f01c03. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FXQ892200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88dc182c9cbd26b45216c4261d28241e1129a2f17872740d4134d4bc2eced9. 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/FXQ892200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ce1562fc0ef1827e0b4e8b473a682ff64e528925c79dfc3d349030e6c0d904. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX282228586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9e8fcc562bc9daabaf51b8e5c23d517042c8946f1bbbb064348133ffa4ed29. 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/FXQ892300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd453ea916da19d3465b4a899e7fe2335c099dd638d7349eecd3046b34903164d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642300069.
All About You - Récréation & Ødyssey Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903cfeecf31e9931d0b913a5b07444e4c8153b1b089ac413fe80691b4da0be25. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRR642201377.
All About You - Nounours After Hours Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a7b406a2339a77dca6305f6d0cc71c99ac46e2019918fbdfda6165151a6b7. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FRR642201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4e0dc403703c9bf53215c0065c8070c9b840a2511790567b4183388012895. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b0cc527e274a3db485d7fb09fcdaf23d1fb169d5485c44caebb100a4a42dc2. 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/FR9W12231516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c68535af02abafbf37aa32ad7b177b2c5e2dbf88cf6dcfbc802a5cc7e28610d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRR642201183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869474ba69fd3364a659b55883804e5c1eeff47d6e1f02b2494d52138799a7f4. 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/FRX282105481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4e0dc403703c9bf53215c0065c8070c9b840a2511790567b4183388012895. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRR642100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef390128648cea9dfb18dd45a7c0ac6533aedd0c1608a1cae43d7f142c9bea6. 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/FR9W12435658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef390128648cea9dfb18dd45a7c0ac6533aedd0c1608a1cae43d7f142c9bea6. 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/FR9W12435658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379f48f399c175c83a616dc97af5fca8818afd81e302cd42230658f01aee5e2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642201770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb77e06f47ef8d71824ffafaeb1c6703573c00417b36a7c82d1dfa5b537c80. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:32:54Z), 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/FRR642201422.