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 0xfd972b9e6b5b6379b1843de6bf89d9de4444b7d09b43c359a8fbe1470d364db1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb42424a-9976-4920-bd32-f6de68875dcf.json and https://artists.proofprofile.net/proofs/artist/cb42424a-9976-4920-bd32-f6de68875dcf.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 0x0045e6d6a22bd6947b81ef5ecd5b6e17fabedf4bf516c224232a2e13f901b163. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FILKA8300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a24e8cc42a0019495810dc1200961a4e607d1e72a8688f1d35a6adf2ba97d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FILKA8300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfbbefce523a53a06d97711547559ace22c42f8df05f8ce847389261a88727b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FILKA8300259.
Per Vers, Runoilija (Elokuvasta Arvottomat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90982c56dcf8191df40ca744e0c81edac27cb90ed66b0cc5c9b7f06e159f348. 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/FIJKM8600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86a965c1dd5d11b25bc770e0a51da0f6c2501de47c1d605e5d95caaad9f11e3. 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/FIJKM8500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9ac681dc8e953a39ff553bece423960b8d157fcedb0f716bb8453c8b2162c8. 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/FIVBA8300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ee5382c77952d5b46ee6b44d97b69a1a872da7d71b90ee1bb5d6fcf08cfadf. 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/FIJKA9100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e41fa8bde8a150901612bc22a45b5f020407243ffc4675a8bbed538a55fbb76. 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/FIJKM8500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2dc0fa2265c54628ba1413e083d950c971bb257cc1a26679cb2815ddf8312c. 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/FILKA8300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1570076a2a49bd53d797d1d140d27e01cded6314c2abed5a9eaba78ca1ff8ff6. 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/FILKA8300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e41fa8bde8a150901612bc22a45b5f020407243ffc4675a8bbed538a55fbb76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FIJKM8500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86a965c1dd5d11b25bc770e0a51da0f6c2501de47c1d605e5d95caaad9f11e3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIJKM8500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991c693628b0490a8455819735b1ee38039e0fc40e0d03798f132854c5f708c0. 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/FIJKM8500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed7a5a9937d3f6f6b537b2aa426f679303701fd47af778bfcfdfeb84a0a08cc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FILKA8300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c00fda4724115890b1d49d7bc579b7c4ec81bab4c1329f674afbc8c398f5f0. 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/FIJKM8600207.