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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead096a713621578b6248375ae3f686f795923061a56c47812c8240a9f47e86d. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3eba2a1-5feb-46ca-8385-aadcdfeadb90.json and https://artists.proofprofile.net/proofs/artist/d3eba2a1-5feb-46ca-8385-aadcdfeadb90.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f416a5e3681f4bc696b5fff9136c363153aa296c87ad8ae796c88927b09b929. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FIFIN9400079.
Northern Lights Vol. 2 - Music of Contemplation for a New Age [US Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f416a5e3681f4bc696b5fff9136c363153aa296c87ad8ae796c88927b09b929. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FIFIN9400079.
Linkola: The Snow Queen: "Gerda and Kai" (Lumikuningatar: "Kerttu Ja Kai")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a1e48cc94c306034f797ac01452f429370edb4448de90a446825f9a1ebfe9. 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/FIFIN8600055.
Sisask : Starry Sky Cycle Op.52 : 1. Aquarius [Dream]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0933e067cb37cb3fffc249e16b445e0cb611957e03a9d17caa8bfa90c8368e8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FIFIN9300401.
Sisask : Starry Sky Cycle Op.52 : 2. Vulpecula [Anxiety]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8596ba365e6d75d2da30736bf05358a0cd761cc8ec35b5e06aef06a21f3f6af1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIFIN9300402.
Sisask : Starry Sky Cycle Op.52 - Pleiades : 17. II Maja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855f48200e1fa9a731d8e3d8ccdd79eb9bc31b2fcfd38d18d7f05964c916b130. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FIFIN9300417.
Sisask : Starry Sky Cycle Op.52 : 25. Ursa Minor [Peace]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831541f9c430f3d913828b0a307c5cbb7e5bd952ac051f29d952bde5fabaeac7. 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/FIFIN9300425.