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 0x3deb047b7d868e4c4cba40b3e65a1790e7cfdd121288089589818ce6a06be0ab. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c70d725c-53fe-49f6-a676-6c50c20c4aab.json and https://artists.proofprofile.net/proofs/artist/c70d725c-53fe-49f6-a676-6c50c20c4aab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intiaanien laulu (arr. T. Ali-Mattila for vocal ensemble and orchestra)
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 0x166200f73175322366829bd2159dbe3015d1ca986ee8d12a4cdbfe5353330327. 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/FINDE0500049.
Hyttys-Hubert (arr. T. Ali-Mattila for vocal ensemble and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5addfe8c921852bff336147e007e1f93bf822077727e4cb514e14172e035dec. 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/FINDE0500051.
Kenelle tuuli laulaa (arr. T. Ali-Mattila for vocal ensemble and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3583a9e4058fe24cd52130081064802c88cc7463b30dfe37c68634bae75392e3. 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/FINDE0500060.
Krokotiili herbertti (arr. T. Ali-Mattila for soprano, baritone and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc08f5d09a60aeda5ea3c5333a4f5d0df756d613e8254df5d78d0d9fba41ed. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FINDE0500046.
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
Oravanpesa (arr. T. Ali-Mattila for soprano and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa3cdc8716e6d7f59ab031e3d967943461a707f0d80dc1104d19211c412ae99. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FINDE0500048.
Metsan laulajaiset (Feast of Woodland Song) (arr. T. Ali-Mattila for orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe867864eb307dde05722f30e4892f7360807703fcc6ca9c7890f3d65eb4a41b. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/FINDE0500050.