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 0x5809d6e585b856e7b94af98e672f62a1c035ae1ea390806ddb82d1b01542e1bd. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a00b69-93e8-4624-b652-d8ec9911b2b2.json and https://artists.proofprofile.net/proofs/artist/27a00b69-93e8-4624-b652-d8ec9911b2b2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba29afc0ec982cf2b36be8683877d2b358b401d2243559a6c4645055f0aeed5. 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/SEYOK1857203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f73fffa127ba1d84058cfb151bed5affaac62e9aba2d42691666e2cee14932a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEYOK1857204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4b227f6d236195bea1b378c42098ecf3a0923dac98ef5ab3e57719eb79358f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEYOK1857205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5a9ab0b52578098ddb67bc41d2dfd15a67fdb61db805ccdafdbaa4a518ff19. 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/SEYOK1857206.
Virsi 357 Saavu Jeesus, suuri armontuoja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdcfea6bf8e6e096c04ef7f2548b440279ec30cedce5f249cc9ceeca0835d3. 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/SEYOK1857209.
Virsi 310 Herra Jeesus kun täällä vain kanssamme on
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99189f7383022983ee5ec152f0fbcb3c559a3f37f1c3e93e4fd0a2be193fab72. 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/SEYOK1857210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf089c8d8df7f3a2fecd198fb8f220aa33b4224088a098861a7206b0180237839. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SEYOK1857211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6d235b7ef96b5b0e4d1c7a351c12226ffef81998719b8aeee8e0e812b3070d. 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/SEYOK1857212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9892f5638f394e1ef1bf0e463468c7fb17b10acd98808fc602718e71a6f149. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK1857213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15637fd36eb035da5df8a1639bcb2890d8a43f33b792214c1970bd4c2a61568. 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/SEYOK1857215.
Virsi 165 On suuri ihmeseurakunta Herran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24097187cb9c037b4ae4bf9c530964407e84bd27f9d71e299541d2a793501889. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SEYOK1857216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a3bcd5c94c86466da8097b39ac9d05dfe4ef0570e8622e34baf6078af2d150. 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/SEYOK1857217.
Choral Concert: Tapiola Children's Choir - Hannikainen, P. / Putro, M. / Backman, H. / Lithenius, S. / Kuusisto, T. / Finne, E. / Kuula, T.
Choral Concert: Tapiola Choir - Merikanto, O. / Sibelius, J. / Pacius, F. / Tormis, V. / Mellnas, A. / Sallinen, A. / Jalkanen, P. / Hannikainen, P.
Vocal Recital: Isokoski, Soile - Finnish Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf202cda12226b92b372331ca382cb499cd75fe5711f1518a96c6980aa7a08593. 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/FICLZ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac2bea7511b1cf748ba9162edba87310088233b88946b8e55d5d982d466f16. 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/FICLZ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ac6f8653e539ffd4046ae9ba83d362d904ccc728f82c521513f98980e94719. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FICLZ2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b966d649360feb244e59634741e2b52f2ddfe8b8c142497901f19c72ea58a1. 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/FICLZ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ac82dd0d6a2562587399f19262c84969bbc5f0194d26cc7fb2bdc653c515c. 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/FICLZ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8286fa73293343cad247a887a730e49c7f1efd07524dc3b02baea8237cb9677f. 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/FICLZ2000013.
Kiitos, Jumalamme, Kun Annoit Kauniin Maan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229d3cd8ea3b1fc4079f99512d44891498daf04dc358c77f5d27e91837c641d4. 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/FICLZ2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d9401fa5e869683cbb8a915fcb042c42eb3cabb4af5bfe56695bd7466173bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FICLZ2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41fe691aa6d349c0b2d1792dd7c2d83c07613647fb064467ff0bcfa59460b1. 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/FICLZ2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde362116b24531588cd639f2429e7c924067cf46d3bedb5f70327f8b8c813de9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FICLZ2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7d0dca83a8f66731ee91e98c4f57599c0e1f2a76f5339476c42bfa29779c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FICMF2200004.
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 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/FIABA1200181.
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 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/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 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/FIABA1200184.
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 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/FIABA1200191.
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 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/FIABA1200195.
9 Songs, Op. 23: No. 6a. Soi kiitoksesksi Luojan (We Praise Thee, Our Creator)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9aa1f1009cc7f751a4e6365769d3f44fdd591586f10b46528e431c594006cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FINDE1000075.
Armolaulu (Song of Mercy) (version for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eee0745a5117d1db5cd44f04c04f8eaf8f9b4062bd47b6bf4bbeed4e3feb269. 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/FINDE1000086.
Tule kanssani, Herra Jeesus (Come With Me, Lord Jesus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ea3df25051db9f62c0d598cfbced06e417020d8d435fa0101d416c9c28541f. 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/FINDE1000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b6a1ba29d8432cac13f12725147610612bae21196d019592b530baa3dc3d26. 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/FIMTL8000022.
Suomalainen Virsi (Finnish Hymns), Vol. 3
Herra, Kadellasi (O Lord, may I dwell in thy hand), Vk 517, arr. J. Kuusisto [arr. J. Kuusisto]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a0b7e0501367cf7d815776b55b71454ceb877ded7efc0b70a9c42339d50566. 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/SEAEN0469040.