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 0x45e3a9f8041e69368786f5da095a1a726d4f532f9985b567d24ffb5f9041ab81. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bac8eaf9-2b47-4366-ba5b-20f7c3e08bcc.json and https://artists.proofprofile.net/proofs/artist/bac8eaf9-2b47-4366-ba5b-20f7c3e08bcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martín Delgado Presenta: La Otra Música X Airelibre​.​fm
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 0x8d8a216660455085d6d40f1eb38232ba8bcdc29b9152a89539fd3d8c2d52251b. 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/GBLFP2047079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea96c48c0bf1ddecc9adc192cd2d6fcc775a715ae82bc31c37c37648a973707a. 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/GBLFP2047078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc2892409761bcb3f62c3d64b6169e4a00294ccf84dac08d75835b1b26a8a81. 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/GBLFP2047077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5714addc7f1652af6b97c4cc3adb98b67c2499b81ee834b816b9a2b41489680. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLFP2047076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f94b15bb0abb3f2eb8b8af243de9af4c261187658471ce37754312f14966cc. 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/GBLFP2047075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9761fbfb1fd2323682dcf6895cfde39daa1f522a0c4339b6cf3f2ba0f49973a6. 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/GBLFP2047074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960b11cff7c147d6cf522fd536d12993eccc3d9de7f952b1ce16eb0e407364e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLFP2047073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e612e5f6a6016b5cef5536a452819fe219a5824eb5dc649065aef3434df1a67. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/GBLFP2047072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a64545cdf04fede35e007974c02e1086ba94613cdfb3cc304901a3ecd69bb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBLFP2047071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4253bfd85c436920b80fb033c4315f7458997a586aa2549fced837ba3688e0. 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/GBLFP2047070.
Nunca Lo Entenderás Si No Vas Más Despacio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ab5485a4d9f66bd83d0fbf6ca2c79f5b251e5566575c70cfc393d930e6bca. 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/GBLFP2047069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb29243cf6a2ff3d7ba3d2f1f4317da8774bbd044b4bad739f7b879a4c6a4b. 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/GBLFP2047068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947bf21973397b2b70baf42da528cfe24162d850dd7f31cc6392d2279ac9845f. 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/GBLFP2047067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc643090a7c12f4f8757c2a495c253015dbdcc83d507a4e3b447cfe5e70e681b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBLFP2047066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa872ed3a03eabb638b2bbb761cc014b364d8222ce12f8da779f22eed22abe221. 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/QMFMF2304100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39da2a610056758b8694673ac883f4faef2c0933827cfa373c53d2539391c8. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/QMDA72362739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dadd2fa577e63500bcf135f7ceaa0a05b8f66674f4fc2f77b029ab89da5da1c. 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/QMFMF2304103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9b55523b198f81ba54aa1181b47227b032c645bd172f7a88dfa64a91282a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMDA72362617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a87a187de21440655d29e3010e9eca36ef067e414c1d68426261267125c6061. 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/QMFMF2304104.
Amarillo de la Orina de las Vacas que comen hojas de Mango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5440a5d16c2aa1e149e485536f1ab114c944b873ca046377517aa46d420d9c5e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMFMF2303164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc2c22ba661447a01aab8b98351bcdd3fd59486b8f7a595ec862120d90d4d7. 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/QMDA72362518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d14e5ddc8f4b4e127e19e9335c8bd7a911c9dfc5f285961042baab2e6bbcb7f. 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/QMFMF2304105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9b55523b198f81ba54aa1181b47227b032c645bd172f7a88dfa64a91282a0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMDA72362617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa51e6fb75e3a0db05c63e0dc87d779d6f5999570bd009de3169d17104828d9. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QMBZ92256176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838170b24dd83024d885dbaa1dc87bac5fd36eb91e633e9c041d54be95c619d2. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QM6N22259016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4469f0f133cd5065fca93946db72008a31c5741443e0a8813ea5425f6b1d177e. 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/QMBZ92299163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc69541741752ebb11b5596b5724f74de87c0d609ce01231d2a79d212ba3b801. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM6N22258838.