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 0xfe4032dad572362dff6f7ad538c508fc417764b4ff00b3bd802992d9b0804008. 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/b396bc7e-9aa1-4189-abb3-85130700f652.json and https://artists.proofprofile.net/proofs/artist/b396bc7e-9aa1-4189-abb3-85130700f652.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 0x0532d970453369a906bbf746bfdabc8203a83d6fabad2beb3b125ca40845deb7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF1215980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d28207b154cfa07cf75b27e6fe2715d586e7537548ce569f4494bbdb721c119. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:07:34Z), 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/QZXLZ2514943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72edb42ec7e597d2581ca05134898abcae3c81b043f42055be0d100c882dfc85. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6DC1413367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a81bc5a1b4ae923409c188e876476022efc6146ec882334addead6747f02ee8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:39:36Z), 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/QM6DC1413371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf7c6bac02c249c92435ea11c98b96489268803586a4c8577e160feb36ef124. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6DC1413377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6a5edbbbd6dc4e714d4612bf6bec68dedfd15c0e50a41b338d0d8f66872157. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6DC1513515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17f7e95db5fda09987047c1693036de69b006f815ae32c860678324a7ca5f21. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QM6DC1413358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81006d39504b7e021245a34e223ebf4e2ac3f7abcfffa18ac32b6eca262bda2b. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/QM6DC1413360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79668d501a1018cde0c93d7c61a8c8c97edbee19d71e1843363c4ffc069a220e. 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/QM6DC1413361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02a4ec7f167c17926892eb974a3227a70250ca68f9d7aff0d5f20148a446b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6DC1413364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831453dc08b6be540d59ea1cefec9d862305b55e69204d79638b4d43c3407279. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6DC1413365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40df29f92bb1ee3655a01df2a78f1d2fbc92b1d234a37fdbeb60fc93a670fb72. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6DC1513522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb12230ddd9ecd12f7fb083531959cc54c79665c325aca2befa01fdf5f3f761d. 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/QM6DC1911224.
Popurrí Corridos: Luto En Tlacamama, Isidro Prudente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cbbb7d2fd3c7eeaaad48541b34252c27468824d99b80da91a8f854437804b4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM6DC2087081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e40ef2cfa9fa4747c5de92d12dc4d4be94acd99b7546c71ddb22363471d4f8. 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/QZNJX2121625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc79312ec094fa04bfe1449639eb7dc3f2f4eb24f5e0f159a346228796709c5a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNFJ2303767.