1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdb9b381e3e551f4389cda2dd0cab33bdf404da4b9b5ff9888367865812398496. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bd2f12a-0ee5-4867-9af8-676a5d04abe0.json and https://artists.proofprofile.net/proofs/artist/5bd2f12a-0ee5-4867-9af8-676a5d04abe0.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 → block OTSBitcoinBlock must exist at that height 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 0x318f82bc43d44c48e73bad4d32e879df55fa4c23b700de84a71f408c7b816913. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZ5AB1796667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8c5ce90066acc74cca65e52e2b2d28fd70148f5a0f62da0a25873425fb7237. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US7VG1724334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfd87cd2a607cb9b28b5ef08d10df816130957ede90e078dfccee511ce1bb1. 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/US7VG1724337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec17d68cad1bab49edd0da7cec469cfbd7f66304a693054c7e86cbbb1bb231. 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/QZ5AB1775943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654fee0cff1564ec9ebe2a254c0c3fed3883f60a5d41ea99a5b76cb5d201bf90. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZGLS2009683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780ec19b29cbe8bd019d82f8595903981cbc60d19a1edd80d351ae7426610d0a. 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/QZNJZ2300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2be15b47e2026b4be70891e95f887e0a9e2f6654b6bc893dbf7bb9475476d0. 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/QZW9K2410974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc508838eb01d3494b7cad15167429c53125c041c0a23fc442fb98693a44a49c2. 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/QZW9K2411437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5439e1c4167c65adfc90c02524583c9c404c912b78e992f1cffd585dc5da0b9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZW9K2411439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc43e172663419f14983190fb35f1d5bc51e2b2bafb915eece790256c2aec4f4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:38:05Z), 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/QZWV32588977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b28edc37b6d01d16d3fcf5ee8fdd1ddadaad1b2e91aa008367ce2357444b7a. 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/BRU0N1900026.
Barril de Pólvora Parte 2 (feat. T.AT.E, Cela Efeso, Tom Calvario, Mano Sassa & Vnegao)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49b0bb28fb0134728ad9b74fb58d817b6f670012eb145d74ec84800fdc02ebd. 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/QZMZ92101142.