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 0x421e4b81c5e465b7665bae0292d995008c476b8720dc518fbcff47a9c09a3c89. 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/b1e0c174-2cb6-43fa-8a9a-51e989c6527e.json and https://artists.proofprofile.net/proofs/artist/b1e0c174-2cb6-43fa-8a9a-51e989c6527e.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 0x82b2d0d9054df957982d89dd63a96ad098c2dc2af5196d1bf3ca79469a467015. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZTBD2546372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f46c07f22c0f5f9659b7388a630f0a8d4e609e0037ff08be5b565a98ce19ef. 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/QZES92140654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c6edbc60d4ec481f34bf87caf0371b74d57a1724176af907544ebe1f851aa7. 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/QZES92140655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a3a43ace16c10151737f3aea09012f7c7d0cb4bcc43468275e9d3c3959778a. 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/QZES92140656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191ce7c91d0d586ef9deff49f24ded143f5f01fdd22f7d4797282244be80c341. 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/QZES92140659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7514f39ba67797f58a5425c66c2ee5d8e733524f1ee0c0c7fcc4209163b455e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDA62342215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57535b125906e2b0e0b72893753d1c3d6e461221c6ead259d8bc342988315ca2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMEN2397299.
San Judas Tadeo (inedita corrido SJT cancion san juditas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c2f049474459e6c531b910294ec03ffce95ee58a7fe097de0d481a6ee6b83. 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/QZTBC2319822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988099d7eceae857abce644e02bb0d2e11e1dac040c2cdddabd116b2c0d2565f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTBC2319825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3dbcbcab5d37560f3350e3d24a2a9e8702537a6d4f6f50ebf31edf66e8ce3e. 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/QZTBC2319827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a9eb917a9a9322c024f04e1e3a813854313addc1ab7a54b1a6695a1d6d10d6. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZTBC2319833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aca12f88ac741e7b01980bad282203be3cf8044884eacaede967713a894131. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZK6Q2419273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8ede8481561f229c7527f3f28b9fc6b8c5575fe1a4e7aa9994b411f1effd7e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTB42427523.
Negocios Prohibidos (LA OFENSA X CLAVE 687)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a2a2d328940ebca0ca597a979378453d46c1cbc552ad534e58304c2ef3c4f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTB82439759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d3300477a75ee9947db7562dce611ccd7999a1ef3e26eacc7ded3b7b088a1e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB42422122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c18910d48647266db7a0b138867e0ce95a2fb1298654cc8f89ef42676e1af8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZTBA2426048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2fcfa26751175bbabb3524f4093668c89a064583bc4dee6673dddf9f072a67. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBA2426054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86eecf97888f29f057f6a154362d9b3c2ce132aa0b2eea17be67dcd510a8717. 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/QZK6G2592969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bfa89e32f7fb690e94eefff7c2d85c10c905b298072b299500f6c489dce472. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZK6G2592970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6050fd409b02f970340c65fce2c5416ae12afc4dbd678f3f6e2057d602c058. 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/QZK6G2592971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229c56e907230a396502a7b5c75753d635ca0ebedf8256c7a61869219569447e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ9QQ2300912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2678048470d1dbacdd9ff307f5b37d412413d6e15bb2b57270f6280828f9a535. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ9QQ2500032.