Lapinlahden Linnut ("Birds of Lapinlahti") is a Finnish band and comedy group, founded in the spring of 1983, which played humorous rock/pop music. The band started as buskers. In the beginning, the b
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 0xd5392cb4c03dca767dcee28e01dff0928c22df43ca7b620527441afe6bd32304. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fc2e962-c90e-4d97-8d4c-a0a4a79afb6d.json and https://artists.proofprofile.net/proofs/artist/2fc2e962-c90e-4d97-8d4c-a0a4a79afb6d.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 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 0xa2353fc735f229b6f82e7c6943f2d13c86d47017bd62366c19cf872c6e191ee2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FIEFP8700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c12a327c025cc75012c05279039c98ee26c109eba333ff224d73d96839bf6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FIEFP8900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f4fde9a76a2ccc9f6c55d9b2e784cd8b52961fad27531ea40773de419b84a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIEFP8900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d44724536a5a453503197c831933246b466524e89d76bf780f56403f67ac9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIEFP9000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f41c2f1e47ac3c9b12c33870af518ad70f7c536416b4160a74f7b368bd636e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIEFP9200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07342c185cd38bd281ca1f6c76c3dc1702daa98c70937c91d6653198346b5bb4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USNPD1223318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dac6004f5a00f60865c744b60d294870cdb0122271e9e78c2f934df07bd65a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FIEFP9200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c12a327c025cc75012c05279039c98ee26c109eba333ff224d73d96839bf6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:17Z), 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/FIEFP8900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55385479ce94fd250a0fbc90aab11eb9b48d0aa6fa52db64685e0d62669255bc. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FIEFP8600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ec6e96819de381c36bc55b22825ff113f10dd32eaede4ffa6e67296e01a5a6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIMTA9400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c44f27d6ed9cd1a02da04dc51008a427571a2f87b5230dd823b60bb1882ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIMTA9400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96c45d4353672e15522e275161545a879f7cd115c65094658f95b28a23876a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FIMTA9400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd980e214510a545226a05b917ee4f4c48c3e973cbc60b4f70c2ff8a2408a5ebb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FIMTA9400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba0d5777ab6e84f13b5b2cb99322a90403fecbf60a44b0520926296f68039b5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIEFP8500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb529d49b4d0ddd1157808af7604daf4c12ec02024bd76d03f4f675b71583fe. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:24Z), 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/FIEFP9200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e55e85d5ebafc58efadd52f8a1ad081770739d3e21605c7dc3413441d89b32d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FIEFE0700455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b61ef56156d119a0aabda95f2e7ba89df3b2ca649b784eb1435524aa0ccaac. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIEFP8600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be265c940298644916423d64850a68e05618c49eb746e9bbe75caf2e7cdcaf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIEFP8900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c12a327c025cc75012c05279039c98ee26c109eba333ff224d73d96839bf6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FIEFP8900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb29238790dd65a3907789613e9c373ceef067887609d1de4e84120b6a9a420. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIEFP9000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f4fde9a76a2ccc9f6c55d9b2e784cd8b52961fad27531ea40773de419b84a5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FIEFP8900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865c0ef26f604a2f4cd0d662b4a346a6b2b9c3c213c977e472587ccabc92e10d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FIEFP8800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a71633ef8191081ee715ccab5ed1fe9a79eed92cfd68dfbd9a414c32c597df. 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/FIMTA9500093.