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 0x6b31f3475d6899c0317eb1f189310f8aa590a360a8ec3a55b2cdebb90752de1b. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cdfb738-b0e9-47ad-baf0-ec6ed8ffecf7.json and https://artists.proofprofile.net/proofs/artist/4cdfb738-b0e9-47ad-baf0-ec6ed8ffecf7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Rauman ja Porin Rauhanyhdistysten 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 0x3f9f733b8f42a8db84528c059af362d7063811668e823f1c4541af38ef924487. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600276 — a six-check JSON result.
Siionin laulu 79: Kuulkaamme Herran sanaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9e8e8bf1ddeea5d9749733d0a5b866fc135a7ac71cb57f6a712c8b883bd4af. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600277 — a six-check JSON result.
Siionin laulu 110: Saavuit, Jeesus, maailmaasi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6707e525d8ea08881a514b92e04d061b2a8bfded49eb662faa3339d0d120ed2d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600278 — a six-check JSON result.
Siionin laulu 118: Henkensä antoi hän, kaikki ken loi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e067e3223966985ec628966624e098d2be89ae0ff2a00af09fe28a0047711ee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600279 — a six-check JSON result.
Siionin laulu 136b: Nyt tulvii äänet toukokuun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186c19a246384abd6d84e06c83517a53abff02da3577795b3521f5172060762. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600280 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0313338ec1d4a4c5b9f8c683e66096854715aeefb7524ea3ebe603308d16549c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600281 — a six-check JSON result.
Siionin laulu 219: Kuule, Isä, pyyntö lasten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624938df659f1cd0ceb39decfdbd6538c075ca2e1ca32bbe6427970d7e7daae5. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600282 — a six-check JSON result.
Siionin laulu 221: Oi kuulkaa, te ystävät rakkaat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5896a489cbf944c7d6339f42a56188365641a6956796d1ea55c3f56e3504fc21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600283 — a six-check JSON result.
Siionin laulu 233: Taivaassa minulla on sinut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ebe5ed992e2e78f951fdee90a00b39bda7bd5551e4af911bf96c8cf334b7a7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600284 — a six-check JSON result.
Siionin laulu 234: Jeesus, sinä itsekin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcebf48c49e503fd0841375cf7540cf13d637fa0684af94a212461457fd1e9f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600285 — a six-check JSON result.
Siionin laulu 261: Täällä usein korpimaata kulkeissain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3810b6425011cbabf818a0db22d5172326418e7d3c61a0de566191854bcb73. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600286 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3f6da2aa0a7c421d78252576f4a5bcb5f4d5f0b9086e2dd0afbce868df3508. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600287 — a six-check JSON result.
Siionin laulu 298: Voisinpa Jeesuksestani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a05463962db965835f59beaf8c0316014b09f901954b7b86a6d9200e5449ed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600288 — a six-check JSON result.
Siionin laulu 302: Sinua, Isä, kiittää
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e8c6163c5ef263e90f71f0d591805b5e006f8e75013e0260674939bf1c7584. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600289 — a six-check JSON result.
Siionin laulu 318b: Nyt päivä laskee, yön varjoon vaipuu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c838baa9940dd9450950750d6b1159ad615da5012a7932c5bfe97192f05db56. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600290 — a six-check JSON result.
Siionin laulu 331: Nyt nämä nuoret tulleet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe97912b18676d308115c8c427ea5924ced825dbbbf7e31b981733dd550e507b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600291 — a six-check JSON result.
Siionin laulu 332: Herra meidät toisillemme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978e398f9773047a77765329a3070695012372dd065b51ac9c3a4dac27964cb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600292 — a six-check JSON result.
Siionin laulu 333: Herra, eteen kasvojesi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0cf1cc49797e08f71fceb9912b3d146d7cb86f49b04dd8cc441ca7e7f288d8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600293 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f2dead7843b46bea8332b86dc0c43a02c4d23ed1212acabccd07f0fd3f55c9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600225 — a six-check JSON result.
Siionin laulu 67: Oi armon mittaasi, suuruutta sen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a218d49d51461b4b33ae86af7a838c49e00e9b26bdc58ea1c875674adf16961. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600228 — a six-check JSON result.
Siionin laulu 104a: Oi, katso Jumalan Karitsaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2782adc55a6fa365f3062a5916828ca6525fe7defdf1f8e04ba0c795f56a5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600230 — a six-check JSON result.
Siionin laulu 120b: Nyt eronhetki meille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0e57edfbb7fb15cd5bab99f136492644ac7306e948923bbde1fc6fd97bb612. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600231 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f155f08cbef91a1fd8d214c27d8f9ba1646dd919cd14e1584074f907fe2f25. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600232 — a six-check JSON result.
Siionin laulu 260b: Mun kotini taivaassa ihana on
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8638928696bd97148ba4b0873438283a973101085b3a6a80a9964b77a1e9da4e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600233 — a six-check JSON result.
Siionin laulu 272: Pois, pois kun täältä kutsun saan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6528058f8091c706c877ac0fcb1439c973be6ee24d19731594f392e37ef4f41a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600234 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663c92ed63deb36ce65867299baf028211836142b39a479b1e10a9a8ec924d8f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600235 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f65bf120845fd544ec459914a90cfe40fe105b82973d78409a8dde607234b9b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600236 — a six-check JSON result.
Siionin laulu 346: Taivaan Herran vainiolla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6b405b4f167b7b4de0d21db274408914b1b81d425178679601612944dc19d9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600237 — a six-check JSON result.
Siionin laulu 366b: Maailmassamme muuttuvassa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb153df1b16cceea4a58497f3aa9ee5e148f4ed57788c599413f1d45edaaf785f. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600239 — a six-check JSON result.
Siionin laulu 367: Niin usein täällä päivään tuuliseen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16064b976c8de78fb350288c18a0cd23e0a12a8345fe178a2c71079ffdc81229. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1600240 — a six-check JSON result.