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 0xdcc3500be3029ca0498005ad46c0984dd1c465adc0712bcebaa60baf99d37b5b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2d7bc7d-2376-4954-9cc1-66ee9b38f12d.json and https://artists.proofprofile.net/proofs/artist/f2d7bc7d-2376-4954-9cc1-66ee9b38f12d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Totuuden Henki (Spirit of truth) [Finnish Lutheran Hymnbook 484] (arr. K.-E. Gustafsson)
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 0x0a536892ade7fc5a5a24259364858471139b331dfd7a4faf174ac8d9e1e274c0. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/FIABA1200179.
Jeesus, sina huomaat (Jesus, you notice) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a2f4a468eab0df0b06b2d6d3e328e75a427f2bab80200647d90a51fa840c5. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FIABA1200180.
Voisinpa Jeesuksestani (Could I but sing of Jesus) (arr. J. Tormala)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb27ed4ab773a73fb052ab3829427d97d8e902069f8c1eb142e2a635c82ed919. 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/FIABA1200181.
Paiva vain ja hetki kerrallansa (Just one day and one moment at a time) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9297845be4b1f45fdc26117a1d6b5a637adbe016443bd51799c4904a1dbf128. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIABA1200182.
Nouskaamme vuorelle korkeimmalle (Let us rise to the highest hill) (arr. O. Heikkila and T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d391da6073550011df7523f3e4e6544e590de19131884f1bd087169f78ed39f. 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/FIABA1200183.
Anna meille rauhasi (Give us Thy peace) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb15039a2de6f69489cc4c3f6a4dd33bc474cab8db1612133f608cc7704958. 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/FIABA1200184.
Sina, Jeesus, ymmarrat parhaiten (You, Jesus, understand best) (arr. I. Kuusisto and T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd325be22db0d23f26b23fe2bb38c8b38044e00cafca93d601607070a152a556b. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FIABA1200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7832c066b143502d13400d5808b08ba4b112c1112485eba609b698825905e0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIABA1200186.
Jo varhain, Herra annoit (Long ago, Lord, Thou gavest) (arr. K.-E. Gustafsson and J. Tormala)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aefc23f741de23b7d76342071772e6dcd4f80e77e6011049e58ab9ac39fb58e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FIABA1200187.
Kun koulutyoni alkaa taas (When school begins again) (arr. I. Kuusisto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f52d8c98f7f252ffc06816a48eb17804644e90b754ebb93150a99453e6523. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIABA1200188.
Ah kuinka kevat hohtaa (Oh how radiant is spring) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfb0eedf00577b83fb4b3ca3c2741299d47ccc89e195469671a2a697e707886. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FIABA1200189.
Niin ihanaa on ylistaa (Tis wonderful to praise) (arr. J. Haapasalo and J. Tormala)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9aea15b60792aefc776cf9c13800a0f65590b71b0b165e9e6432aa1c0fb147. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FIABA1200190.
Jo joutui armas aika (This blessed time is come again) (arr. O. Heikkila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e30e3317d944fb3d272b5a49363981ce1e33667774852d4d188a759ad95488d. 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/FIABA1200191.
Kuule, Isa taivaan, pyynto taa (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16f3ce533e7e3bc488cfb88cbe13330780543e7dafcbfb91023cd84d286d3ed. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FIABA1200192.
Herra, lahjanasi sain (Lord, your gift I received)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a43c4671d62474bf324e1187198b555ddf87ee5f9f720d1c5b2eb0b6a5b57f9. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FIABA1200193.
Ma silmat luon ylos taivaaseen (I cast my eyes to heaven) (arr. J. Haapasalo and M. Turunen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0153b1f7a9f8c5bddb478bc59f62476c7f58f1ee4af380e1b30225af4b7f50. 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/FIABA1200194.
Ystava sa lapsien (Thou friend of children) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93b45e398929556bfde52007a1eef10a7dea434f5fb679f8bd872075f299724. 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/FIABA1200195.
Jumalan kammenella (In the palm of God's hand) (arr. T. Nikkola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9a912231ed5af5d5ba461969088a7fae578d64e85224536affc946f505d5e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FIABA1200196.
Tie valmis on (The road is ready) (arr. O. Heikkila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d6199d81cbec3e1b9645497c3ab25173b8e43d1e38f44d148736def53105da. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FIABA1200197.
9 Songs, Op. 23: No. 6a. Soi kiitoksesksi Luojan (We Praise Thee, Our Creator)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6802d11a3ce0d3f7a88c6b0f90e0a285215017eab6d038f863621fd9b9376e2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FIABA1200198.