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 0x94871826c3fcb3b23bfa30162f11d27a27753d0418045422dd2b55436180f46e. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6ce0567-0635-4879-9e48-81c32d53a304.json and https://artists.proofprofile.net/proofs/artist/f6ce0567-0635-4879-9e48-81c32d53a304.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grupo Siloé Junto Con Siete Claves en Vivo (En Vivo)
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 0x7877a4c83acd97f3442d79f334d35046613f25e672f55f9500c71cbdf7ca50a6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZNJX2344647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7d7e6137959e63ec006f6fbb4b94f2a1f45650926934f534748436c1ec4ee. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNJX2344648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e697ab0922104d8cf4da9ca716184a5288f70cc00c64c4253f45c0cb5df36b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJX2344650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacac4a1963b5302b92ec208731ef8b1e285baa1abd9d0b628673b1cb7b30304. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNJX2344651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9218303c001e025c7598b504b602bb7040e1a91b9970373c219fa7d3cffb62ea. 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/QZNJX2344652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4b867540919ce7923ea7c9aeaed2ca7fb96926e3e9873cb1256e231f1eb50c. 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/QZNJX2344655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bf0b6c415beb11c9095a146b21bc6dbee51e9616fdee5161f7552c7fdae0f4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZNJX2344656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373b1a992c52b8c2be8e32a0e367fe04ce82d872046db6bb9eaf50b0197422e6. 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/QZNJX2344657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dfc72001c8088d3278f850c3e5144778376bef9887f50fcf3d6f41b97e0dbc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNJX2348000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf301c248e74fe5a65781a00e9376bc24d8734bf5c9c3a5c07278bd4277f60ea. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNJX2348001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f4c789bdfdf3a207e48e347ef6d708e4cb473b0d410a81d03d72a2ecc1423. 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/QZNJY2432921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6266d948350cb61cbc8a36eb693f999275a34edbdde23c5373ff588c827a70b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNJY2432922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a2b5376ebb961de770e3bad3a3e02bf1244638a86bb5e607f1af546f49bef. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJY2432923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65241b67ec76e1cbc937cefd0be1a70c15de140ba77da279082d8d541ccda9b9. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZNJY2432924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54186133a0639abd17d0305993ba39585fa36a33a4ccee1e9cf092d3aacc97d. 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/QZNJY2432925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fb8cffeb8b26a90da0c293541db465ef5e6759f6880fbd2b1be90ca6509c12. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZNJY2432927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b25abbcdac19e057f81a03d17f0dac4bc949e9532bd0ab959c01466f72a9a7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZNJY2432928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51aada16e29046ac2c246582cbbd86b4482edc30e08db8f3951c2368ea1b703. 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/QZNJW2520731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77297c8a4587c0d13117ace53c8f9eaf50fe0149aeba858fe128f06283f519. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNJW2520732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb429c050c060b131c4238e6f5986f88ea4f51fc1f64767256104efb0b0ec39d5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNJW2520733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f442c99028e4d5936ba9f8a622e92f42fe3a0239a41eb869b9906a18e31362. 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/QZNJW2520734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8674e64bb264b46eed27d94d3de6dd41d8b957b2b6b05fbf590d6284101424d1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZNJW2520735.