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 0xefeeb696d4aa100e62056cc639dd5dc43ab99045ab873900617f22acc6d486ec. 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/76f58d1c-cda9-4fc6-b35b-312530cc5aef.json and https://artists.proofprofile.net/proofs/artist/76f58d1c-cda9-4fc6-b35b-312530cc5aef.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 0xd24886bbf80fe3d7a6c26c2f9a3496b34f1f8ee6cd35357719c37a5f248c845c. 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/QM24S2002243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd078b89c3fdf6b19e79f683755e2081ad06f28cfb3d620a295b0bdf65e4f9249. 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/QZPEW2446970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272624ce471ec3ac78f64723d97866561195bc43e7ca1009440651078d1bec31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2359793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67fc193e785bb9b464d0f42ad04adca492dc7f90f22b665684c27519085f0f4. 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/QZVEM2306505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042d020732cc3134ba5a4e3ff5bd6bd98a75e7c188a0a04ca54101436343617. 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/QZVEM2306506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805963d21acef30f674948e27ed0862f7b0b40b70d3742611ebd4e98d437b91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2306507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fff6140987ea525c948583f72f4fbbf9413f2982d0b422b62e4551667c91371. 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/NL1LE2202685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc2a7b1873e64c6b5afac4d021bbab2fca3ea192f8a0c04826e8f077e32c11d. 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/FRIDO2210492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e41a32c37cc2c4f89cbcf1143ec3b475c627c7aeb8c67b127e9ca375d6ba9e9. 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/NL1LE2101992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee323af5c7d0629532e0b0bb9f39f91b8858b431cf0fe46063a52336036539c. 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/NL1LE2001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400952ea2aa65d8289b8d828eb258c7ff8132925aca5dcf03c857f85f8310f22. 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/NL1LE2001502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e9181f8d60cde355b8b15103ed86f13d72b84aa444e9d0f8d4e062eab9f86c. 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/NL1LE2001503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cce34149fb4bbf8cc6046e836751b93297c3574b93913b199cbb2153d88015b. 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/NL1LE2001504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c3fad2e16d589f39d40e76a2293c0cb75987974c524b039ea6c8876d0911f. 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/NL1LE2001505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8723ee7cf0cd29e05c0d36fa762a55bcf7dea05919365a5a7a424e9ed28ec34e. 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/QZH6S1900596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1ca59ef3f2235d4334901de46dcf034675d42b90a4981f621c719ca8ef130c. 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/QZH6S1900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922fbd8ddf35a839224751261a9a9dd150f2ddf8db02cee26cce903387a1fc84. 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/QZH6S1900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdf5667382cd669e3f8f20b3c8f2a6f4489816418550a58f1ac15792535d2b7. 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/QZH6S1900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459badccd3ecc0d1d0d136972b58fd915f1e1ed9ed6af0a6fd2569a274037f9d. 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/QZH6S1900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92113d2654c15f54a508ac282affbab453cd6734e9e09ef35bdd8e0c5c40277. 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/QZH6S1900336.