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 0xe3b28957fbc248918ab511a2e9bc3de63a206f3dbdf14877666c3002830da39e. 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/b6b25097-2f37-4246-9527-46016fb56595.json and https://artists.proofprofile.net/proofs/artist/b6b25097-2f37-4246-9527-46016fb56595.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 0xfad941b05a6143377a61b401f3600d5500518b0e9dc53ba00bbc9e118a694e46. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FIKHY1700090.
Tsiigaa sun perää (feat. Raappana & Seksikäs-Suklaa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260716f5c550dc1cd7eaaf4419c8d9ab54777170962754a2d0e75db9d169c467. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIKHY1800017.
Pakettimatka (feat. Seksikäs-Suklaa & Slim Mill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb7d28474f574f4568949e06afa2b39ccc9b33a96231a176dcff740e8341f50. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIBAR1900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bb962750149fa15efc8f66a9520c0b2e4bfabff28a50f4005f039af108d516. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIBAR2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6bf4dc2e13628fbf57ac98b3c11d618f2506dae97e250240aa116ca57509f3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FIBAR2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab6ac10c97d006fdfbbefdfcda2ab0f450693926da0d27e69eba118750d1990. 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/FIBAR2200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c0318c63fd6119d4cafd5dd5129126c5fc8bed2fd61ce373594d8f021d6cc. 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/FIBAR2200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb7d28474f574f4568949e06afa2b39ccc9b33a96231a176dcff740e8341f50. 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/FIBAR1900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de0fdf938d74637bb151961bec7250e073e9846077fbe687aa306553988287. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIBAR1800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9b855a799702afc6df4214c1fdb27267cc5b9a8c4d364173fc3ad75444aa7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIBAR1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db4bfd973ca769a4020c8de287d2d52df026a55a9d3f47e2c0f970fe2c7eac. 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/FIBAR2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bb962750149fa15efc8f66a9520c0b2e4bfabff28a50f4005f039af108d516. 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/FIBAR2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b2bae440203efd39b691fca3bed1a3850ab6c0c06c6d19c610c82bac7f5615. 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/FIBAR1800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6bf4dc2e13628fbf57ac98b3c11d618f2506dae97e250240aa116ca57509f3. 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/FIBAR2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66aabbede9651647395b93c738125eea8ec50537c2a9e967eddfaf1a7baac37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIBAR1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea7994d66fdc3f021e953d70038b33ab63dba0d77cf73b74ecc3098cba69598. 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/FIBAR1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb676fb17b45b5ab2ce7f3c6083fd9b55e86b9dbb6ac1866ebb43e6e243bd4dea. 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/FIBAR1800113.
Ikävä lokakuu (feat. DJ Oku Luukkainen & Drome)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeea29029777e03d7ac190756f157c46d39fd24e7a52bfcf52cbe8426b4117d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIUM72300138.
Rakkauden marionetti (feat. Yksi Totuus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7835fc6caffcfef8c6f07d09fd3db44b7ead19edfceea7458f3252121bb46a8. 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/FIFEK2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ca588ffde449c07a41ea37c07f530b64c8e055c84c00c16a69b43d06c5d0a7. 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/FIHC82400019.