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 0xdcbc5397b00a5d1f4f70fbb544bd6e2e44fea1cc16c10c6e31e9013b50e984ac. 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/c444ccc6-a3b2-493c-87a9-a37950194882.json and https://artists.proofprofile.net/proofs/artist/c444ccc6-a3b2-493c-87a9-a37950194882.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 0x3b377c3d52942c5741997f128e4ef6a4365b880190071a3ed31288483216c4d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXKG22100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c05d5bfff3f9d8f412d394b74e2284b28c65ace54c9daa8e9e0aade7f9fe9d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BXKG22101027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b02c30ab821624cb6b00efc065bc20d36e6157763c9db690791c955dbb75fe. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BXKG22101340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74cdcb89d5221df20baa4eab1f00bb6c278648f362011c7d53060059c1289e3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXKG22200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b628883afdd08bb597527bffacaea3c2537b930999f17e85033531af23c8e0. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/BXKG22200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc41f3b153741fff792f915d714b559f73deb568856e833cb59643b7529ea7f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BXKG22200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554e23eaa58fa838f00fe40f3a481b32a9bf71a373b765fb6045318ba5ffb614. 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/BXKG22200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784a684e0e439b7c287d9b592f9f1f52c6320bfb84a563684d7ce84cf513abc9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BKVXS2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd531551fec2b97daf78acef5fcf9817dd177d29aab22d3fdcf7b3be4bb1009bb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BXKG22200190.
Set Dj Alle Mark (Maestro do Consciente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758f2402625b98e9088338800d59bccfd28d32153cc8cc70d0214e07896d507a. 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/BXKG22100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29b38d0e29c737aa1d8e8a021b1c8bab0e8048e938ed9f9ffd627acb255c10. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BXKG22200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d192571b7caaf2d56dcc253772c9e91849522d18a74394b1862778e594520ef. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXKG22200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e13c5dc182d5d60e1f2efb2dc1c4b210b736ae5f74f1d3fc3e27a3e25579b83. 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/BXKG22100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbc38aa511302a7d50c83c156c99d6270f5d4f4b5c1a8d2289b0d344863251. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BXKG22100219.