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 0x91328728981c5e67cfab79f5c929d15c27387d35ce96f6795b735fdb7f6ec842. 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/f2722594-1160-459f-b1d3-a4e4d39f91a8.json and https://artists.proofprofile.net/proofs/artist/f2722594-1160-459f-b1d3-a4e4d39f91a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liondub Street Series, Vol. 13 - No Mercy
Liondub Street Series, Vol. 13: No Mercy
Digital Roots Remix Chapter Vol 2 - Can't leave / Hand inna di air
Liondub Street Series, Vol. 20 - Kill a Sound
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 0x12df8533ad6e431f4810cc2e6e5df6854ad233d655ac29b0f3b1d2ef7d858f50. 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/QMKKH1800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e4490db356ffa4f76bce7beb365d86f09e78dbb545576d6f74f712c544f0d3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:41Z), 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/GBFG92000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fce73e183c1d9db888bb8712e2c976b5da665152ca29ad45df8f451ca6809e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:52:06Z), 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/GBFG92000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150eec9cd3ac3f02fdb533dc46a49b98416913add6c3dadc48c572543e1dbb93. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMKKH2100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8782ee241aae0de3fed4b4644d3e81aa9b011b6d01129cde9c441b7e4f9750a4. 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/GB8KE2159644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0314f7d13eda914646b8bac89e96eb1363e470077418c3a9164d032697a301. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBFG92300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7129c1fe458b92785816129311eaf419f00f3ce62bd39642b89e1b3fc7618fc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GB8KE2404865.