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 0x17d2b1d358504fe59d251a8379e81387ea803872cd5b67f2ad95d2fc4e801947. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10e8abb7-a0b4-473c-a0f7-44d29b8aaec2.json and https://artists.proofprofile.net/proofs/artist/10e8abb7-a0b4-473c-a0f7-44d29b8aaec2.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 0x710aee7a821f3c759d39092c1cdf855c9bd5913b5cc331f02616e41ca4939053. 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/ART721510849.
Tengamos Feliz Navidad - Castellano Poulet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8faf352da4af009467d0f795122ade82a267e223eaa85e3075039fd34eedd0b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ART721510850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8368e9071133fe25467cdd20d607d561e91168baac4e3c1e360519becc369117. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ART721510855.
Si Estás Sola Esta Noche / La Chica de la Boutique / Mi Corazón Lo Siente Así
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9517fe8e85f962f148f5a0fddb95cf172209f95f2c0da28ee70dbb08fae164. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ART721510856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802890fe9c10e81cb362725b3b95a4ae8d0478f20fb6eed8598f581e0444bbf9. 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/ART721510857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4003d5ad70ffdbf2ecf268c7d5a7446279661a37f0ec5a1e9c2735a77cffd2c9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ART721710746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f43df3fafe9fb28f7b1f1d82bd31aa822d3d7c877dd802cd4a4d21f1f861571. 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/ART721710748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde62c521523258d43f0687298eb0fe113220c3d21c3887f3ff41800bfefb008. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ART721710749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf115ceafaa15ea3895bb7f205c5efb62a4bfdd33693ab4e5ae7cde9103a11eb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ART721710753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf958e321d432e877f90ee34aa8801c104c2a9109288dd4c8c49657d2e29d7a3c. 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/ART721710755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02224fd186a54b6c696e2748cf1dbab4e9010b03370f86d3113d3d7905c888ba. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ART721610440.
Sálvese Quien Pueda - Juan Ramón "El Torbellino"
Triomphes latinos: Juan Ramon (Ses plus grands succès)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721ef050fded4a4437ec745b7b74e952e5a7c6861bc0084dd264e9a80cd13f90. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USB4T1206776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacbb2293df2f37b1f761b70b2e1ee4df2e2327fd8d87e2e691f55b95cfcf25a. 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/ARF221410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc0323cd549641ed677591344dd6813bd3585c1be9ee976162bf0bf9fb0c55. 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/ARF221410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362afb38fdf201df00f5f4f337a42580e385dde63938fc8ea064a002ec6ff5f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARF221410021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622fbb3e41768edd8ed4b554dd9bd51fa144f7b142ff9b123f0978f9a7bbcec. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ARF221410022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7404a2afcfe9e766966ba268e24dc124e03d9a3e4f30fd5b2fcd7f119c5dc1. 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/ARF221410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6163ebd4d8c2f0ce3d65446a7d153cf966c49c146517578b00b68d98f8bef30f. 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/ARF221410024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29119b62271cd2d62fbee917b71fdd5636a43f6d17a24cbdb7ecc2e1c3649e86. 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/ARF221410025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372f06349a9d4ff3237e5084e204c27e63586c7daea2b903318d5c3974b1d4a6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARF221410026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c2a8d7555e9d07ebb9b837a5ef26f992c4b42f52047fbb3c1ee10226efd7d6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARF221410027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4721571f96365edb727d5d500d59e6b31a2a07a6a3480fce3f5ff7bd71183e87. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/ARF221410028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccbcf5eb41551471cca34dd6c4e2ecad6b313235117c2c9c41006ffcdf46072. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARF221410029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11ebd0089bad17138d20392fd57e4886ac010a2bd85135be104c3bbcf06c869. 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/ARF221410030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d9f7605d7824c43a886026947566dcce288419c67ce69aed976bf548014e8. 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/ARF221410031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4c1e56cc902691f6c332bcb723c887137777a4d409d614509a2975c996442. 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/ARF221410032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5d13e2dcdcaaa69485adfed39ca635a90aa9dfe1373c178fdf6d0649af3c9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARF221410033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7809846d37332a5b360f5403161029ccf3e9c93574bd7c55c6bf39288188b8. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ARF221410034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe359e6a274b5e45b2aacac4bc6c4a5136734183a84a534f6501f18633836152f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USA560828609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2d8ab14e6176a597057942ca0fc65ff6ad3e42db512f4935257a15c07a8aa. 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/QZDQH2356744.