1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdecbd890900a1dc814b1df566be973f57aa18ff003e7244c41add2a6d75cee13. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f7d549-e698-4da1-9e93-c3c3beb50359.json and https://artists.proofprofile.net/proofs/artist/e9f7d549-e698-4da1-9e93-c3c3beb50359.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 → block OTSBitcoinBlock must exist at that height 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 0xa72bddac198568465aca36281a02e517019fe51ecdd443b0a09ec5a728e4ef1b. 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/JPBV01021192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad55a044bc9ee0a842c41e85fe03f2e29fcb3517ac57bce65a9b8fe56fdb0277. 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/JPKT00003506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d127699a691bbba6d5e89a24f66748d5aa10078d0c035ead40d79c3be9b5b7. 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/JPBV01021202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70327d85fed4d3fe227f3e125004f8a0f652ce4d8c3c62d0b3276d9338bfc5a7. 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/JPZ920704297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0951039e08d0fb0dfe57adb4553930a48d3c9f0daecbbbe15d5f5cc3c7da5f. 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/JPZ920704273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb415bbc5b49ea259a37057c4567eaacc81b19effe48e366f76937aebdbf355d. 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/JPZ920704274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd7852f0acc8018a057e73a502b5702d93e5d37c857c9586c2cd626488aa0d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPZ920704276.
ひとりじゃできないから手伝ってください
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e5a5a629ff0278f37ad0564de27cfd702e8528f5b7c37e71189154ab698b39. 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/JPZ920704281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d89451cd2ed76fdb18277d9634a69bfd8a242973f77cce0eb2419cb18652df4. 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/JPZ920704282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87473d51ab7c4635225e5775e9c580a47cf4a8140a114ee59f580bdd7c93a432. 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/JPB600907201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ea360d38acd683266a46882e441c15ffc06e6861916897b35a06e853f658b. 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/JPB600907205.