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 0x2f22f0f5643a65881a9abe1cb77e735255650baf2c24c6b015fe4975f5c995ba. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7178b2ab-a1df-4d10-945d-34278fcdbe09.json and https://artists.proofprofile.net/proofs/artist/7178b2ab-a1df-4d10-945d-34278fcdbe09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Muisto vain jää - Only a Fool Breaks His Own Heart
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 0x90dd0a817ba9fce39e40b23dd92a7bd0bb0b469bd3b6b66c4eb90237369e8fc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIFMF6801100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47aab9105e8adf0acbf18eab4aa772a98794e2599b2f8dfdcfc2631d21f8bda. 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/FIFMF6900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a75613b4030ee0544a37333fc3e11b4029d76de33b49e02f8788f2484b9a4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FIFMF6900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dd0a817ba9fce39e40b23dd92a7bd0bb0b469bd3b6b66c4eb90237369e8fc0. 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/FIFMF6801100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c091ec2b21c9a1846f2df55ae9f0368eaa0f9a8145b306f1d479cef0def58. 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/FIFMF7000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c4f8ae2418f699ca9b6b6deb9b0c9a56db52e25fbc4183c98eabd1bb4ce03. 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/FIFMF7000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8e9ed28b331ad77060e848a6c42ce5e8f94e1d80034714dd272cd962d907cd. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FIFMF7000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011af61f427e7f78fe3f82be4feebc3ca41116d699f28c36ad7ffe710900568a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FIFMF7100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6f69e55b7051edcbb6365ce8e0c272a26401fc7a21064d55cac50750a72c9a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FIFMF7300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c15cbc68a88e85676e2a06bc4d51d78a6ccef74b2f7b0d2ec0e8aa0acd1a95. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FIFMF6900022.
Sisäinen kauneus - You and the Looking Class
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24d01a42ba084f027492ca77100667dc3b4f71d0b05634a59811a9ded95854. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FIFMF7100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54032689c94b5b08386d40e518f46303d60221e790e92437fcd591a9023063a. 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/FIFMF6800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a75613b4030ee0544a37333fc3e11b4029d76de33b49e02f8788f2484b9a4. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FIFMF6900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c15cbc68a88e85676e2a06bc4d51d78a6ccef74b2f7b0d2ec0e8aa0acd1a95. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FIFMF6900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47aab9105e8adf0acbf18eab4aa772a98794e2599b2f8dfdcfc2631d21f8bda. 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/FIFMF6900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81676610cb9b0300f2bfff751dfb99f5bb55d89463051b937f0711cb6f7720b2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FIFMF6900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c091ec2b21c9a1846f2df55ae9f0368eaa0f9a8145b306f1d479cef0def58. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FIFMF7000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dd0a817ba9fce39e40b23dd92a7bd0bb0b469bd3b6b66c4eb90237369e8fc0. 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/FIFMF6801100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c4f8ae2418f699ca9b6b6deb9b0c9a56db52e25fbc4183c98eabd1bb4ce03. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIFMF7000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8e9ed28b331ad77060e848a6c42ce5e8f94e1d80034714dd272cd962d907cd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FIFMF7000010.
Sillä lailla pallo pomppii - Follow the Bouncing Ball
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1053d52ea39a5f97a96bf824c39dfd8e2e9234b53b15d49beee0a652cdb107. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FIFMF7100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24d01a42ba084f027492ca77100667dc3b4f71d0b05634a59811a9ded95854. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIFMF7100018.