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 0xf45ed3f2dc129f8905073070b3ae22886fcc6df39a677ee68a29954518c4fb0b. 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/083ed516-67d4-4fd4-b8a2-217d7cffe8c0.json and https://artists.proofprofile.net/proofs/artist/083ed516-67d4-4fd4-b8a2-217d7cffe8c0.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 0xd8e536632b89a3f283664b574b103731a1c2ed1f57047bab6aaabf18732faf9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX5MY2240188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a3b4c449ab8b6537faa718ffd94517ea84f6a5f5bfa3d73a19e44dde497f82. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX5MY2240576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20de3267a22f735691b95138d201f5d1877b0d6b6288c817b183340924180b4b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBSMU0121857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64107d48e70a7c425f42fa84665104ae49b61ae9b7659e549c47aded0db88fc0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBSMU0139964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663819a0a76125efa727fe557326ebb1006bf7fbf2b19deff5ca8249229ee171. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU1122396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dce2a06f4093179cd9fea96e69299735cd1f40d7c5d0612953a5a45f22311e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX8LD2209894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c673740674cde310d892482de208bc82af416d0c38b9f8ed03f19543859a5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMHL2365566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8767f0b7bcfedeb5df95d859319ea6d1dca7a2e6638289c1c88ff94e6e2a533f. 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/AEA3A2420594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826e2968bb8fdcc04bb6d15aa99adee8b91fb1f214df4da3fcfe183b46bcce3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA3A2432954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934ef828c5e6801a424a293cd1c960978ad0736dc7a124bc7d2ac9c4cc8f5a0b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3HH2503424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d925453e0f5e783812871925a025e65ebf199bf724af58be424f29b60dcc7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:00:03Z), 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/GXFHP2551848.