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 0x2445a79c06c54a7f9c485672e2ff4b858ae0464bd2c326ca1b520b1965ced6f6. 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/bd34f0f5-97ca-4535-b8fa-78306ac00ed0.json and https://artists.proofprofile.net/proofs/artist/bd34f0f5-97ca-4535-b8fa-78306ac00ed0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Computers Stopped Exchanging Information
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 0x84a087179a45b8a9e8a93e3861a3d06d9678d7b7cabe51be408f1531e1e2ed18. 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/CA0WS2178001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c2dcad605bf89e03dbe3403da0f9d735c2fbba20a643f6de05d9d3d771d28. 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/CA0WS2178002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab1fd642a6a04892ee4d81efe72b1a78b6b0bd642ebfe8f99264d3a4083b2e2. 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/CA0WS2178003.
Okay, You Can Be Tigers, But No Crashing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4c5964c2abcd6fe19e1c1ada4e9be5b7279c6265894a3067d0df3ebab1f62e. 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/CA0WS2178004.
Five Years of Work and We Built That Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956fd4d920cdc9d6d71b4db7526c43446fa35096c43803328a93bc876a8d3fdd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA0WS2178005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087eee80191d1ae7b819fb0f356a9ba3d3ac845094d7dedc5b646221f2ed39fc. 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/CA0WS2178006.
I Can Hear Your Footsteps Just Outside Camp - Sah, Sah, Sah…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2b2d7dff710e06cade0cd07d1b00f3778f30805a3413cc16c19ff66e40ccce. 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/CA0WS2178007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474b15968b92fa9b021200575e6ff6fbfbec568c92b1c46bc5fcc2c08f39c8d9. 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/CA0WS2178008.
On My Back Watching the Northern Lights Recede
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918faea0a93a6f343ee3b003e6bbda51b5d730246e72ed2cbe3702a81339ca37. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA0WS2178009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ed1df812b565f9dea3149286066a3f5197379e9aff158719cd0e3d7d84086c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA0WS2178010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8776bc9379bc97bf44ebfebe02b22e8f07cbc510d2802ba0451859b4c8f49c42. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2403201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf757fd89ccaf1ed4e76b52a83b84b1bd13a9b253d3f1174a965c1e80906ebe4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2403202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800556b33bc0b30c486c3374b8e9c03ed056db687ba565c2320a58082fa6871. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2403203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fbf9f2cca7e57301e7973071f0a864c1489430cd622efb5025d65cfa8a2fd0. 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/USA2B2403204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ed1df812b565f9dea3149286066a3f5197379e9aff158719cd0e3d7d84086c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA0WS2178010.