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 0x5911963c0235ac8ea1753ccdc68aa24201c5d5ce93f350e55aaa54db31fd6d5e. 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/984856f3-5eb1-4c99-a359-5b2fb834e812.json and https://artists.proofprofile.net/proofs/artist/984856f3-5eb1-4c99-a359-5b2fb834e812.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 0x8d25edd09edd9e132061991dc9ae16c0a72df243f64bd74f8b3ab06bb49f2903. 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/MXD781807128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790f0fdc3b51c82b1285ca5e4fdfd908c4863656df6356c6db6dba3dc38ba17f. 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/MXD781807130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c79789dd167200d64dd9b8a2fd352b714629b757b7cc836f530c349bfe2d025. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXD781807136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d92fa18477fe7038fa20b92dd40dae6dc1a6e7ab7aa0d470c5de2b782899d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USEL19500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3045a93cb7f4a08f6a31ef6ae73fbb7fc20e63c7b6b21017aa108bbc36d8e329. 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/USEL19200648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d92fa18477fe7038fa20b92dd40dae6dc1a6e7ab7aa0d470c5de2b782899d. 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/USEL19500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03524027a7f55ae1127060a5b7c2f51c166e2e8f89e02985727890bcdd4c66. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USEL10200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f445a2ab5f399b7717bd5136e1d893584a83192869b34f83e05f7ec5aedc4. 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/USEL10300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c9eec6dbff1abce203f52613b3ede08fff35335b8769472ebe0467328bd25a. 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/USUM50110289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f445a2ab5f399b7717bd5136e1d893584a83192869b34f83e05f7ec5aedc4. 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/USEL10300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba9bad0a58ef3e66a34a935aa5668514d50bde464a33b01c1151a1f6ad6a80b. 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/USXQS1616551.
Tejano All Stars: Masterpieces By Elsa Garcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f77c2c7acccd426b58236039c013145c7f4e8bc965c762583c593c10100c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USEL19500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7f602ce4ac22cd052615732a4bbedc11d6080d8f72506d86aeae99a77b5e77. 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/USEL19500321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606557b53380c080591681b69abe9b4dae8d566a44048cae8a2b5f96f6e88f95. 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/USEL19500479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca06d442dbc00ca78264f7df44272b326562166790cc4006a8ae0581db62ebde. 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/USEL19500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334aa8bf690c4ea5bff23444cb130de56e127bca3ccea4d4e14e7176419c8c5b. 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/USEL19500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14064e201eaef8742991977266d161cfedad0dc52564eeec661e990146351404. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNLC9800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c57586b3574455808cd9ff6ca0cd1dc7472a81265da50107942962378aac1d. 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/USEL19500453.
Serie 3X4 (Roberto Pulido, Elsa Garcia, Ram Herrera)