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 0x69a29b1286f7b4c0f2216abe4f39c34a99358599bac17866be87d85d014a90a1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/727a3392-e496-4025-89bd-bf9306ab079d.json and https://artists.proofprofile.net/proofs/artist/727a3392-e496-4025-89bd-bf9306ab079d.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 → 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 0xff1fc256c337d6db1a38960e6538069be2234a29d298790485850a6d1332a615. 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/TCABU1482497.
O Heiland Reiß Die Himmel Auf, Johannes Brahms
For the Beauty of the Earth, Philip Stopford
Praise to the Lord, F. Melius Christiansen
Children of the Heavenly Father, Jon Hurty
It Came Upon a Midnight Clear - Remastered
The Christmas Collection - Carols and Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5fea186ffdca043479efcd4110f4932ebe31850896f88b8dea5a314205ae21. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81853224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221bc61fc678bb8b5f3fa9905f3a4b014e8d5ea1e7b1a0ae324e38fab814a8f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81853225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10f570df3e72ce21f90a4deca9f68751b60924201b3b19873727074e0b59a10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81853226.
Cantate Domino (Kanta Januari Kantu Berria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347b32baad20ec20d9ac31b1e17ee7dfa3a0e01c6289503134fdecc5e39742d. 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/USHM81853228.
3 Chansons de Charles d'Orléans, L. 92: III. Yver, vous n'estes qu'un vilain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d70aec2ce0995775c849bcd6aa3ebd102b8cb76cd6fbac580256aa4cf4a202. 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/USHM81853237.
A Christmas Gift for You, Vol. 11 - Only Original Christmas Songs