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 0x0f2ca2d50bfa94849ced84068182ba4929dffd12e59888ed2cf6fb87eb65538b. 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/893b35c0-f88b-414f-ae72-0fbbd4293a3b.json and https://artists.proofprofile.net/proofs/artist/893b35c0-f88b-414f-ae72-0fbbd4293a3b.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 0x197f64195b032f399d20fc921537831a63c8e3ca0b4b6ad59c30b1bf48ab352a. 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/UYS642200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb6e787e02dc103b4dd18804aa2ba54b9d492d29be6c0592988f616558abe1. 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/US3DF2232408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dbab00c628fcb089fe6de7254ac1c621a12394aef7250f4cbee24f5a25bc45. 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/QM3DF2171944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284382a62852684cc68fe14370cd2cb3d4a2a74c4a56536de79a84c1b0789569. 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/USANG2126936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c67989dc32bbf2bb0890c6b014ace3361d4719adfe496acd904b79d6f8bb10. 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/QM3DF2156668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8723dd48440efcdc7b1c2ec3889c159157dfb854d6c39e7ccee39b1bd76cb8fe. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QMANG2200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b3e35487ce2f1c2eba7babb2d0cc123551fb961835fd7384f3a9f191eb6d9. 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/QM3DF2270751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cebe6dacafda7b56b3cb34e37a25867e6e0ec8f77b7894dcbccfdd020b162f5. 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/USANG2293971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab2be950837edde50540c459968a570553fbfe88efdb464cf61e13ea535a7eb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US7VG2313566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ff6357d68fb466568173382001070fc002ad38cec15bfa7ea2bbcc0c3a815. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USANG2239998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325edb084fecef53a2c61a7f3af3fdc8bb3e11b2c2e96ee7346182621874c9eb. 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/USANG2228477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658e4e17cadf5a7fcdc33d582463462cb8bfa4a0728f790074da026d140bb4b. 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/USANG2228478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6221670cbcdf4fbc77459e33aef34d635db531d1378030b20968466b137ed80. 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/USANG2201872.
Informativo ATR - Remix (feat. Anthony MM, Nahuel One23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935255f71fe44787501e58e968e5b1348e43409091561a49509ced2394a90f0e. 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/UYA522200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b74f7a9f1dcb01d5989548a103fcc5cf2f1fa96fa8cda44b250ce4ff13e18b. 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/QZNJX2202939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3424c6f062235e05e3a8052ea7effbfbc9cbfb87d62ac75cd163d80768083ca7. 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/US3DF2259816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0909e913f15b74bd8c252802a0258e7be0a8798cbe4fff5c0d6604ae2d3a3f2. 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/US3DF2245665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc025d9b433671a480a40702d708aee75a21dc5eabe125d3d54eb137756c5612b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UYA522200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1bcd42634ceaccba689edbdae5cdede9f1e17c3d1b86752703352cb51edce5. 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/QM3DF2193753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73baf7e5caea9ad4d7f9c48f59eed5ff417225d9f340a584458af01972335f1a. 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/US3DF2156643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93c836bf1ef414df8a17980dd5a7fe668628ae641ddf0d10f15c051be96dc7f. 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/US3DF2110772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548c4eed02329e71dd1d593183d3eae100509c933fcc78c434015deedb471581. 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/USL4R2059018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2ad7df2fc9b36aa3c36ed091eae5ea2ccd5b3640b89e493e609f18d3531db7. 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/USHM92092785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a321369218b7fbd173780f6397411c79762ee3b7889ea27319419c066e0f3. 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/QZHN52039283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75525274c19c09e7f310e429884851ebbebe9c0280f45e07889cfc5d5837e0b1. 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/QMANG2243796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c045481d239b274d219742a1cdbf9e3de0fa1c4cce26577c3073a1dd0ea40. 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/QZGLM2425823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231aaf1f5f142ad94766048a0cf40f727f2361db218242a70e9269d38fb97fb4. 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/UYS642100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e81c411707c64c9e9f0e44cb3379f3f59f5ee6cc6fe328e97aa16e0807773. 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/QZNJV2223535.