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 0x56c4b10d51199c93a2d69467b5abf553ef443a08b90c3cc2c227df1e5733a930. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af152083-27af-408d-97ec-23b6007b303d.json and https://artists.proofprofile.net/proofs/artist/af152083-27af-408d-97ec-23b6007b303d.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 0x9ef730a4b457829eeab851f249cbd56931ef93cde8a6e009288c03c121851b6b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES51906451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d5c401b20ed29d2cb066b07da2a20ba9a606a27c46f8d5cfc6c39f82802b31. 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/QZFZ42066473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054c537e4267f82566546645b494993312c338104bf21200883c4d4ede3ece77. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ42066474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad27c5bfa6a572dbc94a76a2de922389d57a6b9f518d7de52b9e0982cdbff2b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ42066478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e80d5d0a4536f030f56106a49363c6d52a49c8287bf44010e9be50143750f5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZFZ42066479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dbd410555304e8d19252265f0d72cfeabf750ae0766465f318a4f7ec9fc9a1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ42066480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc411dd6e70e416d85db757e1fbe19bb1dc034d0ed0b0db9b5342d0bee03e0f33. 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/QZNWV2189122.
Hullabaloo (Una Voce Per San Marino 2023: Eurovision Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3062546b94d9c8dcb15cbe05c4b3c4061ea9517bff73a5979e0c737e33aaea5e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES62338668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8628707236c2c28831129310b525b45429c966ecf348a92a9d1c0ae342311fad. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWX2340582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b55ac42bb3819e13d49e9d5f31ec7a3961c668a21156c514af511ae10630cc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ52058842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6783c76df7534d40e9ebabd68489bfefccdc7728b0c8229084deb35e3c528cd0. 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/QZNWX2340585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06de4319d682ed2549eb1c3442b488d8d04bc450eb7b82ac488392e3b1e5a4. 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/QZNWX2340587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5a9e3041691d186125635851df39cf0a8cfa842505ee56a808bee1a5740c29. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZNWQ2380038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8283335e996bf24997d1f92ec4299965b4cf8f7f4480e43d93d378d185d9f5e6. 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/QZK6K2213530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1bacbe443d1595753f0751450e6dccbf2c818644e07a4f0b2cbb300048692f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZES92138558.
Cheshire Cat (Wild Prairie Fur Con 2023 Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf781f3cf4b007e521ba471c317b5e5333ee5f71ec5b128705b8ea8e742a26dba. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:49:31Z), 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/QZHN62481563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377a45e0d4d7dabb9b4174fde60dac5b27ad83fdf2ac55f49c0dfe2728ef1e4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWT2477851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00405c68e1697b2141482b29e8d925781798e68a20e48823f2d063b8a5fceebb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:03Z), 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/QZTB32428049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3cdeada4a69bcf9cff19df480444c4e43eb42e629a49edcfba6726a10f63f9. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZWFH2435546.