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 0xe922ab59cc534d0eaac4360b3a9449e3484d813c09dd1d8d81a54f083b7b41e6. 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/9f4f7783-23c6-44ba-a569-705367a6ec69.json and https://artists.proofprofile.net/proofs/artist/9f4f7783-23c6-44ba-a569-705367a6ec69.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 0xf80002cae85f032e6edc9cef9ae185279339edb68837b1ac69b89a3db71e9dd9. 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/SE6HN2432212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657f9af6c69180feb6d97d12566ed4eadd687c82045e97f7720ccf4ce283396. 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/FRX282406970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f202d2ba0656ed3519b9d274b6401ebba0527eccf0ed7fd2dab0ea6537403f6. 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/ROROT2305370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8897968106b4b811f221ef7736d4bc8813065fcad061ea6fe650b0938215506. 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/SE6I32479696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb550d23d4769f3984b0e18ec102a22aab3d6d0c599d54dfd6c40fd2c5525eaf. 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/SE6XX2365622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32d82af8ff3e03cedd888674b96b72a3cc162e56c23f17691bf4313e18387f. 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/QZWDE2351466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c7cd801aa228a330bbb522c3d4ad884fe4f337d530e36803bcd9e9d5191f0. 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/ATEK02299038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa6b4b2a27c62cd68aae2df3344e9d040983caf3a44a576dcf05d402d49c82. 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/DGA0L2443428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe141091cc8000e2bbe427ea3b6a2a57d4130d058244d099dc7bffc2131e2f56a. 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/CA6D22400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4cbdc8da86524da48c79770d1e7bea2dbdbece7fdbb5565e00b0a3be5d191a. 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/CA6D22400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c4322a39b92e39d23c565ac4a9378a9de814e6a7cf70301e417a496b65f1f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA6D22400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dde5568f6254ec864ad90588cda8cd0f6b356333548a82a59f11cdb0877889b. 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/CA6D22400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af57049ca6c70a7e969d791215c412781120a356035acefc9a798fe4c622298. 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/CA6D22400421.