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 0x0568e71e4ae0c2e2e50e52040f32cd5ee61fcef89d54f9f726d9b4ae5d13d4e4. 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/58236c15-cc67-4e51-b204-382d848c093c.json and https://artists.proofprofile.net/proofs/artist/58236c15-cc67-4e51-b204-382d848c093c.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 0x366eaed35c04a422f20fe8b6201c67765abe5a46f6af398a9d24f364e61fcad1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCFB2396638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa81192bb7f55a8268563fa92875a1324e602e2e83c333469130657b9e7def6. 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/ITQY42400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc26b6e0b44f366be87bcc48d6ce8b37eac4f4bdb3ead28bc4e0a5827244e4b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ITQY42400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8342770056b19a0d7477805aa5b4b2e08e9ddb905017c8cccf621d147b38d82. 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/ITQY42300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7e3c146e05476bbf465b1c6132f6fd2915764e6b0effd6399786e618911856. 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/ITQY42300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118ebab7c1fef8695de720030e943f6ae26639f132fde0e8d945c3ec0d3137fc. 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/ITQY42300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f653f6e11a70e5b43fe974ee108f306b7863df3070ccb605f4206668a41c0f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITQY42200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ac6ce22842ca16d132288fb840d3dba90ba7a0f983310d66caf1919d5c29c4. 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/ITQY42200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaab20451882eb66bd0f74d87891b89c5a75e430440bf206f5313cd57638585. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITQY42200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e38d4a44a0198c196374560a7c2d35e5064428e5850ae476f9a8865f81aab3. 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/ITQY42100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1682d27e716d569ce1fddb38e8b1428ef64d78226019de604264efa0fc948404. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITW1X2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa730d1a401a84d40c3917d2f3420559348d62cb1eab02c6349b7ee1735afbef0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITW1X2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa730d1a401a84d40c3917d2f3420559348d62cb1eab02c6349b7ee1735afbef0. 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/ITW1X2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae8c3012faae21e78b65f2839b6eee4dd4d2ca3bfb60860bc9549f0e8f797e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITZ042000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1cf4cb59cf98905232ae65d50973d9a79139d0e0caf73a04928c5510548430. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ITGIN1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b1651dd02b8ffc5a229b032ad465e95ca5abb16d799283778f6dbdeeee4c8. 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/ITV191602336.