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 0x84a748a8decf2b019ef22ea489f43b9477e485212c73fa9b0c6f4c36023bebc1. 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/cea77424-18e5-42ba-9e11-3f70350d5ca4.json and https://artists.proofprofile.net/proofs/artist/cea77424-18e5-42ba-9e11-3f70350d5ca4.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 0x51ac6e8160f5c5a04e1bdd60c3e2c7d082bc9b47d5531f94905143562abc17c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2484701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b31f7c43e8bc47f7762e4ee2f5fd186ec5ef2b403cb85e95f16cdcbec9b91e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZZ7W2484702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bfc1c95334016a3af0929db6fa8d69052173f487bd1d8bbf75bca02938751b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZZ7W2484703.
The Loneliness of the Long-Distance Runner
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0266b32be579284f4a217ab7ab7d56b1121d9eb559394f4e46ec65604d6d3abd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2484704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d705aa105bfc8c1d8f820b60c41044b07f45998811eead4e0174090b36695. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZZ7W2484705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507ab1a244a7a3c45076e4ec11e7ee19abf360cd3bc954d67a823f52a277395. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7W2484706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a29c1c05aebe53169ba911e7cd152a369887b08915aed85fad06e684f3d8778. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:36Z), 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/QZZ7W2484707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75beb337e0133fd7dec865554d986708d4a3fbd019832aeb3daafb3ddba9e6d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7W2484708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477942406c2a24d4c9de5bfc1db6a3d324ecfcd4247b114b18e2350141fd962. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2484709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d736cfc8262f8778d5c8d452ad8c9e1f67d87c53c4a0268bc54f5957b62ba3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7W2484710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb0d768996013da0376a0b4cbfa63adcac564dc882f9dd0497951bf201a9dc2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:21:48Z), 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/QZZ7W2484711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cccc2878f6e818ceb30bd50a08f83ade6d3b557035b76e12af2a84b99a5246d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:00Z), 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/QZZ7W2484712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb641fd24b0b8692926669db207ae865bff575465910bd0205868e5cf2fde6272. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2484713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc89fe9dd0bd5328dc738e371c8e05e420d442c3c367db3f0906f8aa149146a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:15Z), 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/QZZ7W2484714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aef80a270798cb33ea7289aca764f995e567b36c7f361cf64039c1030e20f43. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZZ7W2484715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a5954ec5395aa845f12041f46087385e086161249e5048313262e6b17d5fd3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2484716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32b183c5fab3b3d44945eee09bbe74190a46c3b05d22e566cfad3f632031311. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2484717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ecde5f23a61a5e9a6b0ac93d33effe329f3902fe63196a376ffe3341ef3b09. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:49Z), 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/QZZ7W2484718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a18c3b1966a9673733d9a15627e0c0e2270e3e141a4c2694c839a0c57067692. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZZ7W2484719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca8917b57cbbe785384d3f0e6e85e4b4bd1c7edfce2449dc62bc80d08c0467. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7W2484720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba972112c62098d40ca320c059308e3d7fb04173e58adbe6bcc8afcc8a306626. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ7W2484721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b68a51de35a946dfd21efa57512ccdcd7b99a2772879a7febc33754a20322c6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:35Z), 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/QZZ7W2484722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad39a14ea5b765178255d3bf86aa8046df6c64fe5f19ce2eedc8791a68b34dc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2484723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9ad718a827f4581006bd46173ccd6c7fe60b8cd8a0bc1ee2c1671f1c368db8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:54Z), 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/QZWFM2588543.