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 0xea0368c9abdf668728fb77ae068d14be37916b5c5a877d4e90debc6baa3ce8c3. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aad45100-2b2c-458f-9f25-fd4343814d88.json and https://artists.proofprofile.net/proofs/artist/aad45100-2b2c-458f-9f25-fd4343814d88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Golden Big Bands Melodies & Marches Part 2
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 0xca9d8146a6b587a58e913bf96e2e5d24e6274b9674fbfe24c6cf35931ace02e1. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/NLHR51139769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8fb1bb4c4ae1caddb77fb95d630c7d7ff19ed458b2ae8f18f548c678db0177. 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/NLHR51139772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae56e6cc1a16b20224f8edac7831fdf233a5889610fac6b1bf7dfda41e277f9e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/NLHR51139773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438e6d5b926f3baa422a2730992d5073753d50a8c5aed509a42cd75d4df0d3b. 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/NLHR51139777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c0e97914d25d9a868cdbd9f37589c5e0b7bd4b103b73130d50ad2a378b9d1. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/NLHR51139782.
Golden Big Bands Melodies & Marches Part 1
Golden Clarinet & Trumpet Melodies Part 2
Golden Clarinet & Trumpet Melodies Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2824cf99e0cf1f3958b718bdd99916958ecdb225c0c1c068421585dfe4887756. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLHR51247979.