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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eb44a5ac5cf725a4e3c124e5f80fc034ac87f91550027712613135d3e99b6b. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/776c4725-354e-47bc-a8a4-359ecb51dafb.json and https://artists.proofprofile.net/proofs/artist/776c4725-354e-47bc-a8a4-359ecb51dafb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e18e3a13208605e7c4d235a120a06b1e997e0d1ae1e0093fc58073f5702a79. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZHN32123817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446522a9419aab14d9a11739f4251bfe09c72e4360cefe98b6b06ed11914ea5f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZES92383339.
MOTHER / FACE FULL OF DIRT (LIVE AT HALLOWED HALLS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab21f6c45d0e9f9fd4e208be86195d9ae262f800ecfe6404abdbfa770577d615. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USDY42493435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fcb8fe035b65ef433f1b49e24b87800faaa7b6754d6e9b049c66b7fc3c95b4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBB2424255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87b70be74cce63fc3e153b1f69846f923e7045c91026adf699f6f8fcc92383. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTBB2424256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3bbe7325429dd62b862120069da443c792215f5b0274916ef106ae20467e5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTBB2424258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439e19e135d65b6c891f8470ec3d87a0e27888a16c9b30cd3185405f8a202915. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGJ2595341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439e19e135d65b6c891f8470ec3d87a0e27888a16c9b30cd3185405f8a202915. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USCGJ2595341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a4a44820f7a047e6576b398e1184e6e9eb3bc06aacde907a7e3258fbdf7f8d. 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/QZNWU2580661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83beb643538055fcfb06f1c74a38fffc10d02c59bf51fc5a84733420b159b055. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZMEQ2576321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f1eaee6080f5d82095c9c4e782d8de2bd56e47b0a702ee4ef76c6fcc43d18c. 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/QZNWU2580664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f4e3e24885e2e724b92786cd58adb5357a2c21aff76c4a00ce1cd416e0db59. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZTAU2522512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7227bf0f0223fcf8b6155b36a8dec9ddba76f982218805c9f542497f1bcedd. 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/QZTAU2522510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292807f11987f395e271f28f254e17621ad99de6f7ee1b50cdaff9c3b091bc7f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZTAU2522514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec2202a92a18f3a231781416586d8caa9026e6e242dc307bbcf21548ed98546. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAU2522511.