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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f5acef4eea097093cd68d2381b6427bad379650fee47b77439a7993f54604. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4528df4-570d-4368-ab51-96ed6b6f3630.json and https://artists.proofprofile.net/proofs/artist/c4528df4-570d-4368-ab51-96ed6b6f3630.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f64d5758e02117339c2accdaccddffca018dcf86fb8adc56415d588d2f8475. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH2376843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb354cdb92938030beb2019c030d8d8fb9c477c276f4d1bc59a9f413f499edae8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZTAW2356051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36c43141a5b1f54de5e43076b8d54b7baed8cbe76566ef66aa6dc963f088cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:48Z), 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/QZTAZ2398959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1479bfa197a51e53655324c2e725efc632b3a567ba8340b1b502e9a07070c0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB82385242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3801ea89bd94586f5484dd84ab9458272a0e5a749ff7c7bfd3babbc7828e8079. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTBD2349398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01907222384bd1f79f838e06979c17d11f0223d02691bf349e7a3956642257bf. 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/QZWFE2369702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1804bc0ee3fb039900e59bdcdbdf0d0c7d180a3840f4e430f1c40c90bf9e02de. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6P2481179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0500c5515d2db445f72c4ae3528145167ad7cb78ff64f67ceac6d5cacb1baa4. 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/QZK6P2481180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f9c3e9cd418b65b95e2f790d70e4493f78097318130d78f09fab15429fe13b. 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/QZNFJ2402165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722f4dd33f7b3550abda2d429cc53237a41e00d21a5fcc3707695db2348fa413. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFL2476440.
The Ecstasy of Gold / Viva La Vida - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2990a584aa14575953de5940cceddd523b82c66d8e2e7fed168e12231084dcf4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFE2538512.
Aguanile / Valió La Pena / Y Hubo Alguien / ¿Ahora Quién? - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f060d677c150fcda593a7e802e66c658252262e8f94af64bedc9fcd87cd60. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:27Z), 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/QZWFE2538513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9497dd87e4f5d3f4dfd8cf3bcce2b620db1a7bdf76b33586c4f5780cb3a89f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZWFE2538514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169af1302c8104dcf45aaf6151d0dff0813d2078f2dcf3c2714dc202539ed2fa. 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/QZWFE2538515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f9c9e2936b5bac7b698949efe89e03a0340e8af15812c2d4817b669e7b32d1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:27:18Z), 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/QZWFE2538516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86231c4b99d68aa9bd883979f27e0128ef01da95db392e89d03a9d82568db70. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFE2538517.
Tu Olvido (En Vivo · Sinfónico) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7c983eff546afc6d7e78bb0c94ea0ae81d8e2bff9ba43c1f215f902d05dd4c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFE2538518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18fcaf0f3914d9b730bbb15bb0b7ef14aa9a6d1feaab2410b8bb2d7069d7ca9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:16Z), 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/QZWFE2538523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0649b91a89d38da736c2040202fbed884d0ea03397ed443507027c9964699231. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFE2538525.