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 0xda930bc6b483327092b5744d0b9ae0e18b4089ee338268b3b597450a989b7ed0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcf78804-3927-4ae0-946a-3b14d27f0056.json and https://artists.proofprofile.net/proofs/artist/bcf78804-3927-4ae0-946a-3b14d27f0056.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 0xc860c73491b990c21752ec9bb4f18654e4344a4d173ef3669ee0e360f63b6f22. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FIARA0300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccac88cf65772c11c766301ec468615ea1b4051927d15bfc57a4713882ef1d5e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIARA0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3359fa5aeea3089c6632e62945061777dfceefa01208895e0594973abc8000. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FIARA0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1fd7585c6a2773a48b80a6945e3f3f3f3d4fde75d6a6c46cdc6fd7eecba961. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:33Z), 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/FIARA0500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0499b80fc281d8f377afa2d099cc0f1aaeb861f36124572c526dcc2cd963c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIARA0500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43be7d13056681268b3d998c4d14bc00f0303ca964a665c9d302713b1bd285e2. 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/FIARA0500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf526057a6a9793edad007f0584f1b30212f241a971a5780b60477137d35fe7f8. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FIARA0500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bf067ebbd3b3d92a8a4d3ab4f427e5db7bef966d542c6132fce910e82246d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:35Z), 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/FIERF0600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f18922367f2868d97b259f6d4dc0c61a638dc1e2f487c0bebfee4be5dc0d7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIARA0800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6903dc22b9127b3c307ecc3cab22f7198151f92dbe8a675b4a83727e82a47797. 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/FIARA1200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d2d0051fbf5bf2df94e25045f7c4d5496bf2bee1ea0564bf566c5c241383c. 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/FIJKA9700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26714410310ff5f87cf49533cb07b5fd8a583f91bafd81ca62f57acce48e3c1. 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/FIARA1200288.
Imatran musiikkiluokat & Osmo's Cosmos: Finlandia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722c424f8d98447e206086e08c9ca7d71463bd99ae1c18fb88e7771250b8973. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FIMBS1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a91743ce134d4de647de65648ff079f618ea929dab1db0ccb11eb5766a4e790. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FIMBS1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b420a6e4851a481299af564d8cce1a0073d7f156eff6edf57c20a0bbf3a6e6. 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/FIMBS2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab00d6edaca83d2d928ce87c401827a52472d0b72ef43801aad23e89aaae4a8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:09Z), 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/FIMBS2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7903d2a51931a550b0673d1928426f259f432f902ba72746953d2c3c2afed0. 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/FIMBS2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b352fcd4fbc3baa9770db7d88977f76c7e93625a1ea8e977218d02e411534f3. 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/FIMBS2400001.