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 0xbd0b662a37553d8da457adbeeb4be92ade8813720bd78be59d2afd17f8f2d860. 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/d1c26cb7-bf51-4343-954f-9fed896c359d.json and https://artists.proofprofile.net/proofs/artist/d1c26cb7-bf51-4343-954f-9fed896c359d.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 0x8d49c9186f006a86b61c4ccb68b21f4793accb8eee5d20a1028da2ef66e4c0fd. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/EEHH11000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f759138350721ff72f805aced04fb4bdbf3293f49f4ba1fccf45bb462ffa3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/EEHH11000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e4ae00526656ee092098a2b210b1c3a4d6b15db4bb2925318537a1f670e4ce. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/EEHH11000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c7104d8e579af1fad737a9a2fb9ae800741b8d1ad2fcd174fd6f3f1edc659e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EEHH11300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38751acb68af1d91f111cdc6d3f6ab745ff30d7af2e26504994086631031462d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/EEHH10800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248aa8695f66ae29a6178ffd41f185efefb8188b8cb47e1d33371fbcf44a36a1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/EESV11800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccded0aef5a3d72c2b3a2edc771cf39ee1f4bc09c91b47e0e36a181fe205411. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/EESV11800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f24df08a4b1d7bd1c0e0012d42221f39c56cb4b08b4d5a878d3209b46992327. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EESV11800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71d2494dc7505fa0b6e6a239888d3d8fb6de05fd93912fc2d39fdc97ed5933c. 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/EESV12200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac95cd3419fa65a681f16e0ec070da48a62d8e7cf75eb1befc5c1803cde091. 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/EESV12200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f715c760052535148394738034286a71c8abc791bc34eca40a6d018a7fcb68. 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/EESV12200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426608b09bd3da0640073e2b4dd1e5b82f8541862eb5b8f0560206f451701298. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/EESV12300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eb4bced67501ca44290c19aa92bb90444eec44768274fa9c0402f797c4b237. 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/EEKD12400012.
Kergotamine / Seenelaul (feat. Jalmar Vabarna, Zetod & Aapo Ilves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dec325ee38f375099c9562bb2dc3b5f7e28c9f31ec8e55c69e0910d1441464. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCACK1503990.
Tee Midagi (feat. Jalmar Vabarna, Zetod & Aapo Ilves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ae395e56737855f77ba094cb7b9ad12b2364c12b3969ea2c9b5465decd176f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCACK1503991.