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 0x88ced664313b77c9eddd8a5a4a739100869a1d741d05ccbdc98204f043454265. 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/3b91adf4-5141-472a-9213-cbfc05cc7208.json and https://artists.proofprofile.net/proofs/artist/3b91adf4-5141-472a-9213-cbfc05cc7208.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 0x6ae2cd828bee0bae463b46e0f0f344716a6f483d5e6e4556c9e190b8d2c69322. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BX2521900221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd98340d9ad3b8d4dbf9a2b676704a45330f6aed255d60c3ccbccbe965b30c1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BX2521900223.
Amanda Coronha (Ao Vivo no Estúdio MangoLab)
Quarto de Mentiras - Ao Vivo no Estúdio MangoLab
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d641abe7dfb252d3370416d521c251fa278412e48aba824f3771a47f7a8108f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:36:43Z), 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/BX7MG1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49cd28021e4366cb5f2bdf9594ce904c9ce7c8133bc0b88e10cefad9851f21b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BX7MG1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf3fa62ae0c63bd86ee1c27397f93572fb661cde4c37738bba3537a935493b3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BX2521900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36ca097c2f00b44186c7649edbad08c645bd0695714e255c9902d27aee20b87. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:19:57Z), 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/BRUM72003664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970f695d702262cb4a067dfde4ddb70bb194d1e4c6acf27a9437880f5a5bc04d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRUM72003925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7915fe3e8d1bc40735e59202c0dd6938e05e0da2403f2af9a3b2e130bc8692d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:51Z), 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/BRUM72004029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72cb75f2373265afe4d01b624291e7d0a76520c8c2f265b4d90f95c55f96dbc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BKTT72300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76f1180f7654ee0024429bc5bcfab3d621663ff853a4e8ec6af09c55dcf0d9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BKTT72300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed6573accf973aa05494254cdb871eed9b5087d9924a8737b789dc029108acd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BKTT72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bdd032aa1bbf5bf2cd99e34a1473d2501ada448648b7b7e3bc49c9030f7e7d. 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/BKTT72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8bfc4d95b2a54de5ddb780e327115d33b8c98209caffc63e05a565218e0d6b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BKTT72400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d931e645262e1beb6476fabc2418c4ccb54915c90676a1a89721aaa797a028. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BKTT72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a51b74da248179018ba644e6cf40f5eec4893965d7480d6d4beed674d34951. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:40Z), 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/BKTT72400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6380bb9d8f544993218b6599acb5fc0a8c60e6429d3dbaf6f3478e9f2e859. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BKTT72400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa3915af63a37931247ae906392e0d04a0809f0cfc4754272a200b7ee24c3e. 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/BXM442200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76615d0b2aa9b1d1196c3a63a9345e7b63be2671faa4b10e8ae89b508cf2e67e. 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/BKTT72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ef3d7c3f68edad0ce68e6326e877d1fe8e2c0777e89ef1e788674566bb193b. 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/BKTT72200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb4e467015b4f2295a9a6f3dfa67416386292fe82e4bf05dd0384611d288515. 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/BKTT72300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5e3ddc2f01c064db892950f7bd33731ec9622ffe3a0454920355401426089c. 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/BKTT72300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72cb75f2373265afe4d01b624291e7d0a76520c8c2f265b4d90f95c55f96dbc. 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/BKTT72300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76f1180f7654ee0024429bc5bcfab3d621663ff853a4e8ec6af09c55dcf0d9. 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/BKTT72300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bede32f0439a508cb17a35168904206596d08d7c596c0fe9a42026c0009bbb. 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/BKTT72400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6380bb9d8f544993218b6599acb5fc0a8c60e6429d3dbaf6f3478e9f2e859. 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/BKTT72400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c0f5e243761a72e97680cac538b209c7c9e9a5deac150b0d4384f2d1a2362f. 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/BKTT72400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3401d15825123718072da251161c525cd2d288693934cdf9e444d547d4372234. 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/BKTT72400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f987344dbe28d9263fc9a286466b9d9de63501deb4f5a27ceb2cb57aac8f251. 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/BKTT72400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21799c454b7cff923059f87a326f509cf0e51f846a7efd4729d7c3214e068f26. 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/BKTT72400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d169670cfabc84332dce5ef6aa95351367456ef4da3e97d17530e31cd80562. 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/QZNJV2384210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a6ce7c22d1a3dc029d7b328b5a579d19c17351c5e4c71db4cfec66969ece5f. 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/BXGAF1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592c96262bb65458090919e2d7901d39a71f98d96611f9953033bbce40291afc. 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/BXGJJ2400002.