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 0x30dc84bc77a26552f57a9143535e8025a5af3664f4a839c2fb249e70ba9cd4ca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6c72888-cd9b-419f-b493-9635ece908ab.json and https://artists.proofprofile.net/proofs/artist/b6c72888-cd9b-419f-b493-9635ece908ab.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 0x1496d6acd57dab86bc5dacd422c67d6cd8e51e442f66d7242837dcccc28e4174. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:58Z), 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/NL9KR2443585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500dc248ac7144f6b23b92088d2be97c029d0e8770e3bfbe15bbc36e74d347f9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6SA2430510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf656d09ee2b8ff5d329bd9858bd46b6961d1f8eb477f23da14b212c761484772. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:10:58Z), 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/SE6SA2430512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94958e4df1dbef3dbe3f4fac40cfb83cdb30b48628730cf0c1f45bc2292c6886. 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/SE6SA2430514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230d1335b2d07290591447800976498b12e1dfca316c091dd988c71fa9c11bae. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6SA2430515.
6 Dzień Tygodnia (BRUTAL DISCO The 80's)
6 Dzień Tygodnia - BRUTAL DISCO The 80's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9f421499ff90315e7cb5e63bc337dd6593fca7dd839b17b4b1a13c54541243. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:50Z), 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/QZWFV2414269.