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 0x988f15cb136d25464b8b532b9c91fdde92b4b98afa3c67fdd0926f5c4fcb3d3a. 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/fb638d72-e594-4b3b-b3c1-92accd4784f2.json and https://artists.proofprofile.net/proofs/artist/fb638d72-e594-4b3b-b3c1-92accd4784f2.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 0xecf8e6a599df52a3033b8131fcb8fdcd8e0d8f25f514ba7a0c4d59f1af675360. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM4TW2266464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd033be9de5fc4da7738230b326a9507273e8f150ab5302d651a171ab2ee7586f. 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/ES64E2201814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8f7586b810f7c1ed15dbeb52cfed3f0ba24e7907ce61b71ce00b101f174c65. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TW2293667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee62406c6a4f45b6e10089fa21e8f8b06d0fac4dda7b9577f46d61e185cc9836. 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/ES71G2244620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d528b7400cfae92b3a9fcfb3a50a3b8c02388926f005e6c26552a91716ac178. 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/ES71G2306655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd3d8e4e3e3933d66f3f4c28688e8524487d43f219c9f0d3c8ce03b447ddac9. 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/ES71G2312895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf669be1eecf7bd0286e1db9974f66b607a039173451b180373bc82d2d7a02d3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES71G2317874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01741e455bd45add62044ee99e4295b958ba29e20286c0f3f8324e88067cd69a. 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/ES71G2317873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e44a3e1327a1e76880c4e72d82a4f6f7d2310d862ff360b6c65ce5871fe87f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES71G2317876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa03c7a26b49a37afef63415baa15cf962cda4525710469598f02d6d998cadf. 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/ES71G2337129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe448a1b784012a28f562cffb18a6029daa0472347b13ff5f0ad3ddf8c891981c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/ES71G2401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5e0181c49620e30fd3bd05e67f49d46a85fc9c1999df644feee97a5915390c. 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/ES71G2404500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b9063005e8191af03a63a5a63b5af0c8f0def42a380e692a6f795cf9f1b6b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/ESUM72500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8628397f72376faf84119a30a409cd6ce18c003018b8f36a2a9ff86bbe4646. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ESUM72500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000a963de0762a3e59ed56903525a654d8df2aa2bd6f6eb3452e533d691e276. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/ESUM72500705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a742feb01fca9237eb042a124bf778b8764ac823982e713da9ff67de1bfadcd. 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/ESUM72500706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796614f29273ddc145f84ffa09baaa7f8d009772c689d0215464cfdeb4e8fa27. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ESUM72500707.
DÁTILES EN ESTÉREO (6pm PatataOnStereo Club Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39605cabcd79b1d630bb6c591a20a7c8d6af9511cd5258f1e9b1cfd03704f8f5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ESUM72500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc3365bb2daf64ccc8114277a7e7c1fae4035e6eb7b1db111994952ace4f52d. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/ESUM72500709.