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 0xa32826f9c1768f07247b763a86cd7db49ce5c57e52962f59c27a68addde14ff6. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6dda33e-fdf7-4d9a-9b0d-babc6cf115b1.json and https://artists.proofprofile.net/proofs/artist/e6dda33e-fdf7-4d9a-9b0d-babc6cf115b1.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 0x2eb0d8e583a06b8bc50ac306e1fd5df7443f5d9548ef9871f440ed2ba7f7349b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXH2J2578523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4351c88b845a827c0b8f85d973459c4ae3375426e5819fe0c706786bf73acf66. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:26Z), 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/GXH2J2572061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007034fbf64d6c30b0f9e76624fdc436d468ac23cd29c8220c457a191d87436b. 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/GXH2J2572204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56c625675652fd0bc3588f6fbd0d7b12fd6392977b9c6d3e33fe1c19d3a6b24. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:37Z), 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/GXH2J2572206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d756f7bee5e040e8a8a9aca17868b36496274626b4fed3e281b110d2b99f5. 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/GXH2J2572209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31592018d5f7fa748b16fb9d53d69109e9a871b7c47713077d4b87d96b81b95d. 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/GXH2J2572208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626df861f34b835238d1eae757c951788b0ae94182566339f6048b9e337ad5a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXH2J2572086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d5c30e1800c2da7fe680d0e6d1003d9827283eafe66b9c3fbd7dea400e8a29. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:01:55Z), 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/GXH2J2572048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4cbd09a0b6e5e2dd20b7f296c1c1a2dbe772f6d0692780e2458e9790c28cf. 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/GXHAF2517142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e113dd0e139d4ccbb541a44b0f1fb5f7a1a8bda6f0aa1f3ebc015119b250a9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:57Z), 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/GXHAF2558817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea776a4bce76611d2a49e0f75529873be165e5ad3e9333bf2d0e3a9a0aa9662c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2558739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577ae4efb1d0a676bc00abce85576d8065353cefa5d18f201c8355dc4c2e4ffd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:25Z), 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/GXHAF2558871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197cec701bd935968a2a3a614f1a3ab0b7ab4c8e1c0ac52826566d3586226023. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:34Z), 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/GXHG92592827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8be687746f13246bb77671bc6cffda98ed03498cfae9bb5598f2ef64dfbda9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXHG92592828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809fbb87aead3beb91802c9367ce3dbb9a1fac70516a5abf7e0d71383a0fbf1c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHG92592826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608462305da37b0622cd1fc3c82945bcb40bfe89bc05f9f027e1080f6e430c2a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:33Z), 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/GXHG92592829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cfe6fa250d261fade00a987f5c7ca49bf51479d2d23d5ec0a78d8182e4fcbb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHND2503498.