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 0x176c3efb4ac0493d12aa7f2bb587c2069850a38d5ab9f0a08c079f965f5cc6ba. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e5db263-bc2e-40c2-90a5-8bfe1fde7ef3.json and https://artists.proofprofile.net/proofs/artist/9e5db263-bc2e-40c2-90a5-8bfe1fde7ef3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thanksforgrassgiving (Live 11/26/16 Richmond, VA)
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 0x3d23d97832ef250f1e229b79b8dfa48a582b464bd9978b04ee0bff8d7fd218b4. 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/QZTBC2392563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761f8157703981d860ce6b9045a7e808c27ab28d6b1a1529025d4bf9fd8aa5f1. 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/QZTBC2392566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab17289bf098547d79e6d3dac49bb09572f7c272758d34b8954919919f276f39. 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/QZTBC2392568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a36d63486e2c9e515cc171f9d27bb22d1ad155a098323cd51a4d021a94ea2f9. 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/QZTBC2392569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befa7be78b51717fac26541527e8b3d96095eb3094ddd7223b2676d86fa1c36. 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/QZTBC2392572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77179b16d326d3690de4e1d022306430dcdea6d92278c2d9d87eb558a471ecd3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:20Z), 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/QZTBC2392561.
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
Ripped Six Pack > Eyes of the World - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaffd76d04fd110b06a1acdc2a6249abf6265d8c7d34615cee48d4c44c9c503. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTBC2392560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4b20cecf9bf2fd93f9da87abb4d650125229df5cc3e81273712a4792f90f1f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZTBC2392562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c5f1245c66b6e94492ada6dc40bdcc92aecc42f865cc2146c9f54f09f340c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTBC2392564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f2e24d7a3c1d4775b448bd5e0d4cb79549a4bd1e34affaf23ae3d74a0e14b2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZTBC2392565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf0b293f480fb9e8c969d591574fdd570db4ad9f4132a521771682551f38894. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZTBC2392567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abe2a6dc0e7f629fce3219a26feca523d19260bf1aaf43df8d59eecb4978d68. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZTBC2392570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e28395dd27971bdec99105435fdc53297d0f99e4cd80184a032135a7bce26a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZTBC2392571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f870eece7ab07b39fbca4593aee79925304a12ff7a79fb8671f01fdf128676c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZTBC2392573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb893d47cf9d0a040f95e507dbfc9924d6983ee4bfbfaff7efe6f432be19211a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZTBC2392574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f5dc74fd48814855baa634b5685452ac1030e84c8bd89d6c5b93de9bdbb965. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZTBC2392575.