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 0x3908d487c207caea470728431865c1b1760399c7cf1b1d218c942dbcc97fefbe. 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/837e1479-3da0-42e8-ac70-cbc5ab333673.json and https://artists.proofprofile.net/proofs/artist/837e1479-3da0-42e8-ac70-cbc5ab333673.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lounge Patchwork (Electronic Nu-Jazz Experience)
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 0x02203265090027803ab22401678a0b5121bf31147da2d8f598f3f7b6c3c5316e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ITO171300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de94c355bf6ce5abf1f5a842c732ea4cc5fe5846d00edc25c3b9d84d1977240. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITO171500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f756ae4746672ddeaaa8f8ef933ab364a403fbfbe2a082078c00c9a54a65cc6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ITO171500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e911391ba536a2200b7edcbf4a934b8b3e40d5cdae41a6eba340d865f41f7b7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITO171800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9ef685d58f06ce39f116d327e1ba4ed33e31bbd3c7c0f9b8b359e4b99cf4ff. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZFYY1978527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92011454c4da6adf3f4c5d5f99c9cfb11f5056aa72c4a75e12cb95c87cca1fd0. 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/QZFYZ1928173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60abbe098a05d5b7191c8ebf89fffa7ce8674930a654c6a0804e4e5d802260df. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ITO172000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a2c8bfe5be8e0708887d54968d77155a847ec6260c497ccd643db288f99d3c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ITO172000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ee5093b219bcb4e02a95c959b7196b1a2a2580f86cf2fcf64faaf63dfd9f0. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/ITO172400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f7904ec099d4c92d16974ec051a0f0c5ad6dbc1faf2a4ece5fdb4e53c54025. 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/ITO172400929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eff887b3f3bebb24fb4013bca0e7ca7025593a32e0d1126d992082ea5a6ed00. 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/ITO172400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde65e6b7ab47b698c6b14a5a57ef7f0b3cc435244fad60c53ba9b67bdaeb226. 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/ITO172500457.