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 0x2d8f41b110e868b8b048c88833ca2210a145d07b14c8da334f0b650a0c797d8e. 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/cc430d0d-b354-4ff6-970c-5804528b801b.json and https://artists.proofprofile.net/proofs/artist/cc430d0d-b354-4ff6-970c-5804528b801b.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 0xdfadf4f039b79cb1ca4806833f0fa53c680bef081781916d30319cc287a516fa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES8591200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adbfd6a03fdf3ecaca66b3383eb9469b5182ec3d8d19334424d750af0f73185. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/ES8591200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe14eea22f342360264ee6c027e427158263a40e45e83b5e9a7916938c94582. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES8591200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b6714849ed96eb1d16a859b30cd14543c3c916068d1457209ee5d0e8b8706b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES8591200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa64c60e5a17aaa20b7614f6689adabebb07fb5b19bce9d90797a0486235b5e. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/COA921500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5cce76235a5bb8c906c98a977612a7c181c0be67212d386393f0dd411b57dc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/COA921500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c7fa1326a57d44cb89ed664bc5663d52855280e95fa38457d3aa88a04c2882. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/COA921500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd04a2ce67ecdef5e2d88f40e173c9b1236996f767b2177b56e38666a367cec. 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/DETP61900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c6a129bd0995efd82e07bd3c591ddfae9f0c1aba04420d0ea706aef9f24f01. 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/DETP61900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1914bbb3e881953278377979c604826da9413071078faa6e8c6bc88b6eb22f5c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DETP61900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566dc4a2991d270f1310006f2fe9d5bac02e9ff0420581718297234827d469c7. 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/DETP61900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf189654b711f19c2f12a9a963d9fe86de63b85d72de6388b9c76d787d269da. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/DETP61900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480d6f1e3b77ee8e58f17d8227ac1b22383126b6ce107be30ada21ca85b022f. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DETP61900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374961428b0cf71949153049a01705f4c8e445790f39b966573e96d2813b03ab. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRIDO2111191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec050a2ca12fe328ecf93810b09e47b81f1cd458ef49f96ca0d425a829047066. 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/FRIDO2111253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97137e5f8cad2d31de7b8dca5174bcfe696364a8639b84bced3eb16b136b9b98. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FRIDO2111256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0942213e3080b08bdcdd29644c6699d987307eef2d74c1967200f9f41f859e3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DETP62400143.
Una Oportunidad más de triunfar en la vida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c6d24daa63609c2367a8c0bbb9a537210de8153ce62238bbe68bb2853eec48. 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/QZNJV2396293.