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 0x3fd15e83e5ca2c8ae9ee7fb86655bb00580aac7c68ff38923474d723eeba8c50. 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/43d4f3a1-bb2b-4f93-9520-a42f03a42c8b.json and https://artists.proofprofile.net/proofs/artist/43d4f3a1-bb2b-4f93-9520-a42f03a42c8b.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 0x26264ea0e4a97cceeb53028028952d4a15671295a81299d1ac6427402730f3f1. 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/QZEQU2055498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d925aa342f7afd8fe555ffb12a6aaad313617b6c50a1c8053ba0c02663f3b8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZEQU2055499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc4188620284cf5442992b69fe98c225062f7a5ecb360635f725f7e37a7dc2f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZEQU2055501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74378f4743693869bf1a33f02e37b63a03422eba630a859a5a6bf4f036ce1b3a. 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/QZEQU2055502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1023f20d5dc1760c01205641b44a949c7f5433c321c5f8d5f73510c782b21. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZEQU2055503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7d62b52a9ebe3b4a071c1b12d6980b557a7a4785e3d6371bed8b5195b5d801. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZEQU2055517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a35a298c347d764912b1ed2168006023c26a8aa39f240f32feb908309bf1800. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2055521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85365b723b09fcbd967484f25b88adbdbf8a8ab35a23b661120451d9bfff5270. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZEQU2055532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4541553b7a2585e14b782bedabb38ac83277b34fa2d61df72c8703db5b0a5a88. 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/QMEZE1907792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd98434e62d9612d7b93433af17f877af59c60d4fd3ed86574d10b87a1d9844. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMEZE1912963.
saca los parlantes pa la calle 2 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9fb9f022292992b87737d9fd33c3e7cd56e6421264095cb821bd2c1d3caf66. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ32138620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eadb74fc59773c20fbf7d3deac7e7780116c0af7cbeb7dc1ac4b1e50278e745. 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/QZNJY2420761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9824fa30bdca2be7c7e10021a54419691ffd8fbe998c2cfc1f8766d777834. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLFP1803033.