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 0x1de0f6db2a875ccc4342007b034520574de940833a7f1d4bab3680dd94ea21ac. 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/fe65e61c-1713-4fb4-ab06-0b94448adbac.json and https://artists.proofprofile.net/proofs/artist/fe65e61c-1713-4fb4-ab06-0b94448adbac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Danza Kuduro - Esto Es una Danza (Remix)
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 0xb7d1fcc6ad3e6e4e51e28623cb87cfe9cd51d09530668b058d729f226c90431c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNJY2488995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee389e4c41620841a183be93e52d2f4cfae72c5d47acaaae6bca41b023732094. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZTPX2419244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31521e02258cb0138cd7a47b52d9d7720ee6e437b4ccb592ec5c3682fba2214. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZTPX2438711.
La Mayoria de las Nenas Lindas - Intro Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c401573a0f82742299b8fbbce6a0852f63f8ab068593d2610668664ded8daf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9M2464802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a6536db7ae137fd4d3aa00582afccdf8b5556393ba93e30dbf3bd5224e0fe. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/US7VG2506504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a9c50a8a7edc10e89d073364abcdce96d2e01d330c50f39bff6db6bb0a351c. 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/US7VG2548876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b59dc6824afd4665f9a8e63a607a51b5c88f9b385445bc3dadf03a3fe46e89. 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/QZNJV2518197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f698ca3ca1302eaa03cc89eac00e7c9b2272a890b5e3833ddc99a8a891aa37. 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/QZNJW2597700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7039fbaeb4fca4f9d6fd0700e9941333fc32798dabc018ffce023198069af85. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTPX2516908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d62ae3e073c1b7a066e91b4aa3cd8af2ec3542debb475100903c8389092cd4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTPX2516890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d52faec2e4e443e6e4546bb4217646cba88861bedbdda9b85a8fde445b113fc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTPX2546800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4177d6d5c28bc46ac1f50dde8c0b140519ef8095a2eb4a0a93fc611a74444e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTPX2552010.