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 0x224826d54f130bb4ce9ae2b5b875feb0cf81aeeeff916c5c5fbab3e5084dff28. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4abc90ba-97af-4025-b03f-cd1c180ffd81.json and https://artists.proofprofile.net/proofs/artist/4abc90ba-97af-4025-b03f-cd1c180ffd81.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 0x5e6897ced7ee0f9850275772205e982f1a75c8b7b773901f57f2b39d0f82c576. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:46:59Z), 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/BR4ZR1500049.
O Quanto Nosso Amor Valeu - Amigo Locutor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75237c5dfb7749eff8cce3637a1f16cc11cfabecf76b74256387d7de78eda1b. 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/US7VG1867642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cc2f22b5b70e29b1611220fcf7c708f6376ddbfebc1d14a9bbaf35c15bfffd. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:22:04Z), 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/BR4ZR1500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4deaac30bae3cb1dfffb68d89c4ee81e85e67edd3362878371d93cdc61efa3f. 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/BR4ZR1500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977dea76ad82e4b18e88fa53d3a557ec56066c81cde3667c071e44131ea76fa1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:51:20Z), 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/BR4ZR1500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe613db9bf9664cbc8b20fa3afb02627c57328e5888d3b67ac0a03b2f69575746. 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/QZGLM2215564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee495d521b840b27dac8cd1b3036fe44e46044c52d93f863abd1ff8635c6042. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:14Z), 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/QZHZ52217829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffe1e9aa789a02a752ac5cf21b747adf825de5f6a0354e38d59ef4bfae08c1f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNJV2106388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb223853c913354e4f240c332b0d0286a7003c34a3c806f67a4f0e13b19627637. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SGB502305805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaac309503bf64689d15785134fc5aec7d4708435ef87b0947346a677c256e7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SGB502361414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055fc791eac1cafc16218c1f145a064c574fd687472da465e9fca4e5d6a649b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SGB502444777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8aca508a7e2b70c2f703b4591e092919f7c8fc3d4bc9d7afb83e2cf411c6e1. 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/SGB502444774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c9e9efa889330f5665c43563e3c7a105c6522c714bcc8e3e0a81e946f74696. 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/SGB502444779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c92dfbe9872d331b7e55a568315b807fb7c924d3101ed931e5715f08557f25. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:05Z), 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/SGB502444780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9e00b0ec1a883935e0af46a063339fb4673ae5079e097d78d8e51fffcf7a6. 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/SGB502444784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b2757e346a67e63339d60947de618d021edcda44e7b8f4a28e3a8eb18e0619. 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/SGW502265360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaafc151d8eeb5a4bdf22eeca9e429fa2f69508f326f47967dd2deb424dd479. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SGW502268716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cf0a3650045a3aecf200c94b867cb43f4f62900cba67274f848afd9446bc64. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:53:34Z), 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/SGW502284990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f3f5a00b0996a7ab3fa5773b8648deb1ceccbc4218c91e34e29e6d2aeb62a2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGW502232964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35297cf74fe67321f45a8e58f5516a8ca704b56d719f6554232e08a128c3b4b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SGW502284936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92f0649f6a01735c34b04636e20008c74109d12fe2fc880e7cb609e72daf1e4. 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/SGW502275361.