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 0x90ec6ccfaef708d1a3b8413e51617ee2b27a4727f483f737f9d756834d41bdc7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7e06bff-0b61-4391-ba71-9407bac6b58f.json and https://artists.proofprofile.net/proofs/artist/e7e06bff-0b61-4391-ba71-9407bac6b58f.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 0x6e8ef19945b6e5958c52e4659f8f4853de2005721e08349b432816f6c9c6f85e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFZ62459952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8217078deed3f2150a471a5014bf6b8e3171056ef13ca85e2ea47d69f5e57a. 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/QZHN72454151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e734bf281ce6226f59eae20650afaa975206e087d8684bb115fc9c3e55dc5. 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/QZHN72456278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63852eeb0a70dbe68cbba9c4701505ac541799caae3952f695e4dfba6d83cfc0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHNC2488995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d1a53e842362e37e437a06e40033de82cac3be7098b741fd26d4c02af896ea. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CACWV2445960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878f79bd27686b91e323c578f1600f0aac3334707e04fabbb01b1e33867745bc. 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/QZK6F2454380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f5c068f24549ce1b73b004f024ec283c70caa34f5e10a6f2231e4029bf686. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKZGC2406800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f23628c864741934246e0efb87a20d1cd02b0241f612fc9e967692e75a6eba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFJ2427260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745977dc41fbdb6539e0ce5d500f90ea0459fc13f9d14a83189f6a778af45c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFJ2427262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73088cfdb3ee3b8386254f3c6026c76ab3e4a46b309f826cd5ec8cdb795cf2a. 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/QZWFJ2427263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743c6a2a2a2e9fad3a2107a732d8582a8e739d887f948b9cae5ede9cb4ef39ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFJ2427264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca065515f870279f61856932f5d33ebb32c04b07e17a42a2055d82eab2721d9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZWFJ2427265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab82b40d56e762d22032e49a75f5609b01c15c9f8a5d54b749f852d3ba772023. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/UKZGC2411506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcac540e25d6e717d7a1a1dde89a126355f7c3cfb911210dd226e8632877c39. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UKZGC2500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494acbd9685e84500d057d139612597f528609dec8e30763aac1529ce96653b6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKZGC2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf7a236efe1c020791e6ce872290e8d9d21713e1397038f3b175dd25b35c56f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/UKZGC2500084.
De Heks Van Gottem (Based On The Book By Frederic Vermeulen)