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 0x5cc065833b6c9b6da0f71cff92f9e2a27c32e80f75ed4529551ca984047a4726. 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/773a1697-1c89-41ea-b642-f2b0f0902dac.json and https://artists.proofprofile.net/proofs/artist/773a1697-1c89-41ea-b642-f2b0f0902dac.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 0xe18c48f60b8cd4a9956d503be6af9b9504df9f3f55191fd9412d369c677a053a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZES71916401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc951f3271863604712459be62feefde630d05411d5c5e1872bdcb52d1bcd2c56. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZES71916402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588054b00a824a2be03a35e834ba544fb75b540c2afc9e385f3ad01336d47b41. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES71916404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47462a7ac2b260f424c9c246bc0056925669b2257dc03d01ef47955c6345f49. 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/QZES71908730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c418709de54e487d53b75129f3753c3545a9dd2e30c8f7cc5ae43c0669bdea. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZES71908731.
Desperdicios Con Tortilla Remojada - Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8935e251d976ce3afcdd7f7019845a7f776707a95cc7d440dc318d34d0b98. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZES71908732.
Reggaetoneando Con la Puerca de la Vecina - Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676253ccec6068bd3b468edab5d73b6e41fbfb8fb2521642f163ae4d655663e4. 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/QZES71908733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286e21d889803bbc4144af78c16e37095d13ff94b9e3a008b1b40b6d8bf7f916. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6N1996908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb65fcfc863fca889aeeccde74069df0db9be87c7c67f94792fcae072ce13a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZK6N1996910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bd089300edd717c559ac9cc826b14478d8c7da09d693e37b7b202f8d06bbd4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZK6N1996911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edeacbce5dab9c4711617f4ba309451e64778705813f989be67848c3afec374. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZK6N1996913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b9ba9d36628aa7d4be7ecb1bcb8f1f787e29e81314144e79bdb1f1c6ba5146. 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/QZK6N1996914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd5044064c1ce933d908d7b79b520ccb56de5df3d7c6fc3d5da4e1856330fb1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZK6N1996915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c08b273b5a2a620f242f73fecec22020e17815a5adf662cfc15466d029774f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZK6N1996916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0660c6f90bee13f32db0f607ca70565cc4ac2b925c455ca4d6c1726a734719ca. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6N1996917.
Split Marraneitors/Ripping Organs Live Session
Desperdicios con tortilla remojada - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c88dd6cc08676b59cf4525572bc0d6bfa3cd28598de63d3349097f3db9056. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ42116786.
Eres tan mala como la carne de puerco - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fd2d7b83038dcac7e2351929262c27ea65c2cc579895f799b043340e8001b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ42116788.
De tus pedos hediondos me enamoré - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b765afc024201c7089c2d22cbafbf28d244fec44e0ca6dedeb05afdbc9b889. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZFZ42116791.