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 0xdb00148c136aab9ef44a8849ca102ccec2ad2731daa7efdd321bb709ce4f20f0. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1586f948-b7e6-4a48-9c0d-c4baf204040b.json and https://artists.proofprofile.net/proofs/artist/1586f948-b7e6-4a48-9c0d-c4baf204040b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Angels We Have Heard On High (Piano Version)
The Christmas Song (Merry Christmas To You)
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 0x7c2d017253b37e80b784bb2e541d19ec87302cff4e4fa6969c32d8b442c72731. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USANG2412119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147bc846c41e3e51de856002bb308da925f8575adda0df36733bd73c12750540. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USANG2492115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dc252ad8f58d2fe4e88511ba4698232b4af8d2ce723c270139c08e42fb6ce8. 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/QM3DF2400992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e434900f11b0cee33fe28e25a2bf21fc192f50c19f40abbba56897a492efc9. 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/US3DF2509902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10abe0055d78ca03dbe08ae11e3aefb5aa08e943e2068e166e008bac22835437. 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/US3DF2509904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3467aff21cb4f91fdd54729eea8a848311fd8e495b38f978a934b822ba1a53ed. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/US3DF2509907.