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 0xa2450da5b935d3c75d248da909def364f7b480eb0076885275824f7b9b060054. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6dae673-9018-4868-937e-cb6b816ea246.json and https://artists.proofprofile.net/proofs/artist/e6dae673-9018-4868-937e-cb6b816ea246.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Teit kaiken ajallansa (Arr. P. Laaksonen and S. Loytty)
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 0xe0ae8de364d9bd1d273fdc37b3de16c6794b4598c8f0535f0c13677272dc8a63. 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/FIFGL9500046 — a six-check JSON result.
Usvaiseen harsoonsa verhoutuu maa (Arr. P. Laaksonen and S. Loytty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c963fd02869eb4fc0b421f793c254c30ae132903c42a9b7b5259f24c30511e6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL9500048 — a six-check JSON result.
Kevatpurojen solinaa (Arr. P. Laaksonen and S. Loytty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453bbfa6422588b1e617c2c7614b1362118c83a549575e7b6d63c9315e1d7e8c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIFGL9500053 — a six-check JSON result.
Pida minusta kiinni (Hiljaisuuden lauluja 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb80b89231311dd44497c42911473dfb4102a246cb3226fcfbebfc462484731. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FIFGL8700001 — a six-check JSON result.
Hiljaisuuden mesuu: II. Nainko tulla saan?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ecf665ae51d9df8cd094e7760a1d3909cf59d0a01d42a99660252da3af898d. 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/FIFGL8700002 — a six-check JSON result.
Hiljaisuuden mesuu: III. Sanan anna koskettaa (arr. J. Loytty and P. Simojoki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa3a43ca1290ba288cd53ebe085f32e5663b02bbb4346ead8f24ba93270f8a. 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/FIFGL8700003 — a six-check JSON result.
Hiljaisuuden mesuu: IV. Mina uskon (arr. J. Loytty and P. Simojoki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c675966e3becd475c37d41c69d5513c7db9a833d8f6f01132fc4bf7127f966. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIFGL8700004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c798e0c8fccaea6b3b071529c6e59e1df8e71f8e940cba3502b5c8787a744. 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/FIFGL8700005 — a six-check JSON result.
Hiljaisuuden mesuu: VI. Kuihtuvaa kosketa (arr. J. Loytty and P. Simojoki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c18946e2c84616c19c868cd7e38e436dfe1ea566b1c71eecd02765743c4d6e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL8700006 — a six-check JSON result.
Hiljaisuuden mesuu: VII. Saavu auttaja heikkojen (arr. J. Loytty and P. Simojoki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562eeb69916e16f655ba98c95d1175a61a17c49120ceb541018c166f47217545. 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/FIFGL8700007 — a six-check JSON result.
Hiljaisuuden mesuu: VIII. Kerran taivas laulaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9f13e1caacf88a86539ed89fc03395b46eb98ba6a1eb516b9c82a55478bd5. 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/FIFGL8700008 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d4294783273101d1d3626e0c60bc72db510db4fdf578a82ca4b98f2e94cbd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FIFGL8700009 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef4cce01b301325e4be74254935bae8086154defeafb87c9ef6ac25ba80a95. 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/FIFGL8700010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29d767e48ee73e8599b558945955c3b664fcc2e8a89f1b4999d91c6da1c25fe. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIFGL8700011 — a six-check JSON result.
Riihikirkko-hymni (arr. J. Loytty and P. Simojoki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c47f596c741744784e514bd019bb6203a3ba291de46930c7c59c9d1471195. 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/FIFGL8700012 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e40a97831e268e976aada9c926f735d886448cce220c1f1fb252f8b564cc73. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL8700013 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577395f7fb39712c04935cee7ae3b660a5a808c52a03fd407a4394f94ac65d46. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL8700014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfc1b544c771c336bfde32ef80ca4787e4f35d6c16008a478859eff90ea389a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIFGL8700015 — a six-check JSON result.
Lauluja särkyneille (Hiljaisuuden lauluja 4)
Kuule minun ääneni (Hiljaisuuden lauluja 2)
Pyhiinvaeltajan laulu (Arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73dde14f75ec82dc915324263c5cf93b28461ed553b3707206137b00f741de. 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/FIFGL9200004 — a six-check JSON result.
Han ei ole enaa taalla (Arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee10c287e65e620bfbf624bcc642fe2d9d4ce9b100fc9538b7c69133788830b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL9200009 — a six-check JSON result.
Kuule minun aaneni (Arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6899ec3478d5b92af428d74c534ee4f9fc53cbda320b0b77e47578081696d151. 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/FIFGL9200011 — a six-check JSON result.
Kuule minun aaneni (Hiljaisuuden lauluja 2)
Turhaan ette tanne tulleet (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe660c570470fb066fc3e13b0283332363d8ac0029c26a56d11fe8edc9bf44f9. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FIFGL9200001 — a six-check JSON result.
Tule Pyha Henki (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d66c203bc4eecc78d1a7de003ecd8f2bf081a2f256e8c2a632e8a9882d33b. 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/FIFGL9200003 — a six-check JSON result.
Pyhiinvaeltajan laulu (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73dde14f75ec82dc915324263c5cf93b28461ed553b3707206137b00f741de. 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/FIFGL9200004 — a six-check JSON result.
Minne voin menna (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5225b503478aa22bae09e59560d4c9a300a692276c6b9e6c9f939920bd02f623. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL9200005 — a six-check JSON result.
Herra puhu, mina kuuntelen (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327093ccde2bd204f8de565c72e49d0c3d541ad629e4e500c3a0348dfbd1b275. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FIFGL9200006 — a six-check JSON result.
Katson sinun kattesi toita (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35f50a4aaabdba0881a2aeb5013ce1c706b9c887ae2e0e3b675f4468cb7d60d. 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/FIFGL9200007 — a six-check JSON result.
Han ei ole enaa taalla (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee10c287e65e620bfbf624bcc642fe2d9d4ce9b100fc9538b7c69133788830b. 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/FIFGL9200009 — a six-check JSON result.
Laulu jakamisesta (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a85a9dcd997a2f7d81ae7428b15aefd29cb8411f74d620a4da115780aa2703. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIFGL9200010 — a six-check JSON result.
Kuule minun aaneni (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6899ec3478d5b92af428d74c534ee4f9fc53cbda320b0b77e47578081696d151. 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/FIFGL9200011 — a six-check JSON result.
Varjoista maan (arr. P. Nyman, P. Simojoki, J. Kivimaki and K. Mannila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f0a29470c6eda1a5255d2a9c6241c7a18b2b58813b2e3681aef6e115c90552. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFGL9200014 — a six-check JSON result.