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 0x2cf4af263471a8a1fa26894d0f29d2e53893b8a38aedfd528794f3d9d35e5d42. 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/ad0397b2-cfc7-4d67-bfb0-467a005a5fb8.json and https://artists.proofprofile.net/proofs/artist/ad0397b2-cfc7-4d67-bfb0-467a005a5fb8.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 0x66d11408b9cab2abec7a4d4939312feef20f6996144c522021fb7bc85b3dfd29. 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/FRX202291173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a98ecebb0ef42bd10f776307efd64c01b5f18d00760ffd1e70c7d0c0510883. 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/FRX202291174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81f46815321087dce1734a0132bb9d6b5efcc117b035940a54a41407bf2feb5. 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/FRX202291175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cc312578b4b3aecf7d150a781ed6d7dba29058314f37a202fcae0e1e25c77a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX202291176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523257f42c7587d36750dd9ac07e08a29fcc2dbcaa87342f961d7804829af5e9. 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/FRX202291177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ee0a8713d0af9455418bb204cfe7b989655ec171de0f2c275c79bda5a40d9. 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/FRX202291178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0726ed340c21a121fcb57790ec87a373d672dde8e5a7775775f2c88b2d992c09. 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/FRX202291179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7483452e1fa5c847e4f2bdd8299f7fe48ff16cff137bdff46be50ae28b78107. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX202291180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74f06720b2f6cf4d866d33c14fe7b39cb4602aa8e9c90d38ae04a404a971d2. 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/FRX202291181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74a4c9fcd78ff483b267cf3c12e2cc6aad3af44ddc40ecac552e90c9ac7383e. 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/FRX202291182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0539a97723f852a05ffa56f74b318ba3e862d736183fa0854074b6ed4d45b8e. 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/TWKT12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71ac9d0894318dcb8a64df73e23858f8a13b3d6763e521c7b5cfbc21c26041. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWKT12300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cfdb3daa2289dd213e05b7faaebee737b6247f0a59afe5e7fc6604640feeb1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWKT12300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f629e71ae3a0f5d34e1910b541cab129667cf1be5c65a23d0a487704a67dc. 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/TWKT12300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69d30a6a20851c37fe2b0205aa14ba16dca1e5443e881e354dac067e8eebeb4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWKT12300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b37e1fb265ecdcc4547cc7c8541721ea8309f84e9b010a10e029d60cdd466. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:24Z), 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/TWKT12300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf613a5e53f2a0e93d4bc53c60a6fe8e7a0e3142ed8e9004cb3f7091c7b7f8b7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWKT12300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca964b9ced0680223d237b375b7f3e71d1003284957e3d1b3dc5eb72b7672e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TWKT12300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c98cc87a5f5a4b9582f30b04560016d0dae4241e6fe9688921e14c6a03f0a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWKT12300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fc32d505417e35cb200fd0b7e6da7b6fd4e401cf5851f589161493dda88829. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TWKT12300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f4ad9b7e394b98444f2b89395a3b689e83f7b53ec5d677d9e6d0d2d0d7fc8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:07:04Z), 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/DGA0P2474106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a67755b95fbe07316eadb119c098be82416c673ce157c20ca339fb23fb75262. 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/DGA0P2474107.
布萊梅 Bremen Entertainment Inc. on CINEMAPHONIC (Live)