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 0x70584db86ec6b62c71b2bfbd209fe2dd36deaa40bd82e4d45106ef7bdb6042e0. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c90d8e7a-4651-45bf-9bc2-235034efc946.json and https://artists.proofprofile.net/proofs/artist/c90d8e7a-4651-45bf-9bc2-235034efc946.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 0x442d32467b8f70fc4e9fc524154d329e0bd74d9bd9e1ba31fc8c6e94b5c22f25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB1836079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa95f019ef17f3f3e177b953e99adf6a8b9f86f7f577c25f9906a213c3c5e77. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZ5AB1836082.
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 0x0d2116b43e8797c60807cf853ddac7b67ddb71b3c00de38fdd74427e2c29dac0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC0PQ2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedace61a9f642ea43bc9b98492797382120e7546bab1ef8a89301a0ccf6bd009. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BC0PQ2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210170d6c33976a2d998820845bde6026be8dceac19a7d317a5851375fc78a94. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BC0PQ2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51193e3a5adf94e60e30bc9a1ec088fe04e90ca43c177d1285c5df176d876b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BC0PQ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c6a4d7343103fcfa792bf49e7015b1c677bb0dbd3621a4e1039de52f64fa9a. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BC0PQ2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8138bf78ce304d83feb4f8b03dff066ca7429e39e876101e05f14e5b8034db8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BC0PQ2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1af2c61e7816a5f8f4b5a704ba867854c24fae1aaebfaa06f4ab83761f4f29. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2454281.
Dança Moderna Referente aos Deuses da Chuva 3 Vias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf82dd6e69af138025eda3c701ee1acab748d8ca0f5ebc9d8ff5f01db9fbcc10. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXY8J2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde453686f32b5cb31577055b05c05e0440258a52af019471c41d19c71161f55e. 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/BXY8J2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a279f4d081c116253704596fa803323b03187803396cc3727539fc3572e6a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXY8J2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab62a565103ac73e0dbff3a12f016d6e9b567cf2a085c41016aa4c87dd2dddf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXY8J2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470c59598f43f339c0956952d7a53bc707a9e85922fafc27c97703015e958b13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXY8J2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e01b67ef2c4a42313c2a0995bc82334ac5ff08026f345c1189fd1f9cf0b485c. 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/BXY8J2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1973cbfc8c0cc715d761421a18eda84d64bc95b4b0e2c79a510277a773901209. 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/BXSG32500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5abef9c8a51c23e2a7cea9192604e38132595e700c8fb98861a06335a7281a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:14:45Z), 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/BCW9M2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425f44fdcd9ef5166fcde0e694592f2be55f6cf38a20da3d4c768f196ec969fc. 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/BX5M81900027.