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 0x9b41aaa749dfe07914ee7d9993efe034b32208e59a8b3c39b22809ffaa7cf9c2. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4fcf695-c9a7-4842-b4e4-0ea605bc02a5.json and https://artists.proofprofile.net/proofs/artist/a4fcf695-c9a7-4842-b4e4-0ea605bc02a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reisjärven Kristillisen Kansanopiston lauluryhmä
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 0x7691eda7f34eb8acede4c9b5fbc84622df6db74cba26368d63c2088b45f8a978. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FISRK1600208.
Siionin laulu 47: Nyt, Herran lapsilauma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0750ecdbcc3e1aa915a470fcc06e52272ab9d7e22e72b8186679a45c5a4ac5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600209.
Siioninlaulu 68: Ah rakas Herra, Isämme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2fd44d4ec7de4d9aff6a7a9d55be1f3968564e368717457e6daa0f9b307123. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FISRK1600210.
Siionin laulu 107: Käy Luojan Henki yli jäisen maan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82935e291e4d8180b5213da756a592eb3dec4c28908d06cb3ffe81ce132a2b91. 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/FISRK1600212.
Siionin laulu 178: Herra, lahjanasi sain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd800e8bad9ff2981d32bcc0f64c6a77f2ce5ea67dab601d5ecdfb3f4f274a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600213.
Siionin laulu 179: Me käymme, Herra, eteesi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3770603f81c391170b3edd5affd7aec410445a858a366b8995e8577fd8004166. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600214.
Siionin laulu 186: Me nuoret Herran seuraajat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea90c1afed19cdabcc2f25b947228a9b1342390355c6cc39069e2d59d83963. 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/FISRK1600215.
Siionin laulu 187: Kuule, nuori ystäväni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72758e323f002381a3975eade079004f1c6aec4588ae3087e880fd3b8ca9d370. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600216.
Siionin laulu 190: Niin levoton on tänään maailmamme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9437008262d2f45842f4f29d604e652240ccc7aaa6a62d466bcc78f924fd95a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600217.
Siionin laulu 194: Auta, Jeesus, että askeleemme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3141bb1bbcc39ab100eb166a46faeae0ca532411ca9cedd6e6cde54a871c28. 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/FISRK1600218.
Siionin laulu 197: Nuoruuden päivät tahdon, Herrani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a937586e89418cd09ccc55ade3da1171157f9dd231c05d0f12e1193a21426ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FISRK1600219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e7723b7302a689aa8c2e5c6abfb13e2c66d9b764dc760ae43d373b2bfefc3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FISRK1600220.
Siionin laulu 201: Tie nuoruuden on avoin edessäni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e40118c1d9a6676839e6c0970086a4af899f2db0f201165a85d512c9e5e8628. 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/FISRK1600221.
Siionin laulu 205: Kuin kaste toukokuinen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be430eb72ca57bfb1a8898032628c9d0cd6d5e38115958b18d9f32f3289974. 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/FISRK1600222.
Siionin laulu 239: Kun yksinäisyys saartaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb24f6794b6bbc2c6ac6687ec52b68e8982b7a492f7cbc743624547c58adc7b3. 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/FISRK1600223.
Siionin laulu 319: Päivä päättyy, yö jo saa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e27947ca89436dad20cc50cfcb622f14de05f440e97d2f56e272490cc50ba5e. 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/FISRK1600224.