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 0x214d8ee1c9f481ac9c42748e3c39f5f820fe282880dde776c37c28063beda246. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/851603fa-38d3-4ced-a558-909c0188cefa.json and https://artists.proofprofile.net/proofs/artist/851603fa-38d3-4ced-a558-909c0188cefa.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 0xabc6f0a945900303b4004fe045e397f63433df9d954b594744af4c455959046b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:22Z), 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/GBTMZ1900943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b44f8a676c4b3e96ff07cf0d8cf501f10b2eaeb48ddbe43477997f5375639. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBTMZ1800806.
The Sound of Drum & Bass 2018 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b44f8a676c4b3e96ff07cf0d8cf501f10b2eaeb48ddbe43477997f5375639. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBTMZ1800806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d70ca41d16baa6508af04f99c95cf370a5a5a05423dad4344c17f239b44317e. 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/GBTMZ1800759.
Drum & Bass Summer Slammers 2014 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e55a420dddd56584679e2cdaae2a3ee2b02c71d1943feaa90ad487183e1519. 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/FR4GL1110267.
Summer Slammers 2014 Mixed by Insomniax - Continuous DJ Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953065cec8cafd1ff78cf5372d947bbe4f0b677925c5939016a74cce6e09cf58. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4GL1110278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8f7f5294281598a33571e0d6bbdb30890bec8607ae1011427f7c4bce8a3bad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBTMZ1700543.