thumb|250px|Reconstructed Roman chariot drawn by horses. thumb|250px|Approximate historical map of the spread of the spoke-wheeled chariot, 2000—500 BC A chariot is a type of vehicle similar to a car
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 0x8f2557411713eb6b973e9ef99c7e02e69f08a55a490af7bad28c239700d882a1. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cec8811-9bcf-4628-8621-3ed2eba33ff9.json and https://artists.proofprofile.net/proofs/artist/3cec8811-9bcf-4628-8621-3ed2eba33ff9.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 0x0889869591fd1c6b33bbc1b6f3002f62604b0d9f239caf3f83634f15487b2b6d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKYA1203204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e3bc3586a89249043f5b3927fc34b67f493b4cf0252dfcb36672e83c64941. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA1203205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1525d706cc248eebefc588e9c628b3266224d45e30f55b69ff673dc55bdd3359. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA1203206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5fe0f84277c1062553263931be5c99e49720a07323df08716304e318648f2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKYA1203208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4de8dfc076af69c9a21e62f9660aecc9b2a70bcd04bb04c3e1e3d4f1293059b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA1203209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd1de5612ae9d6db8aee6025bd1b28ec6ef4a6df6d97fac0360b325721a897e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKYA1203210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04615b6dc542463d10e8532bf1b2f8342c35dac101d9c75918ed96856124352. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBKYA1203211.
Burning - Live at the Marquee Club, London, 11 April 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcc2f7bfb25bb7765773b723348f4f1ff7e91e244db5dfc90cbd698b0d24968. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKYA1203214.
Love Me or Leave Me - Live at the Marquee Club, London, 11 April 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a66d22f258b0b5e6c3a806cdaef76a006db94b321f9b9ed2ab80037f63f6066. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKYA1203215.
So Blind - Live at the Marquee Club, London, 11 April 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901cf530fdfb5065abaf39c2c7ad3ca24dab79d990005fef7477342445396fa. 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/GBKYA1203217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f26d7f64e13478e8ca0e07a33336c42c55b1999a4fda0239cb083b8640e9ad. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBKYA1203207.
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 0xe021f46640c34c094fafb7677b3386396986a6275d75c9ebd20731c38314c5bd. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GBKYA1203212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6557c0bb25974ab048ab9a8cfffdd95119ea0d97bc4d87d2d73d1c16c350cb2. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBKYA1203213.
Strangers - Live at the Marquee Club, London, 11 April 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb645525f5fc8346c2cef222f4ebdb1cbed9bb5152c70794268bf0453de866023. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBKYA1203216.
Meet My Match - Live at the Marquee Club, London, 11 April 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d57357bb4a9935de3b5015c1c4a0cebd0cc78360f4b3aa974d2ad44f687e0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBKYA1203218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a624ba807d5424af06380c36948381424ed7288a19e78f2775b560ced6d5e5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKYA0703187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868f17e508633d21bdbc4947441b8039d51f79995a1fbb75774a89902d576f32. 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/GBKYA0703190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476150560213f9d48e044bc25ed7ecb1a4c38664033eef259335d514862f61c0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA0703191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd291952933edf3fd6a902111f0df969cff8f7ee07b23bc350ea085e34ff812c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKYA0703192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06996a0926edf81bb98a6ed29af085840da384c9b78cdd7159ff302faa07708. 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/GBKYA0703193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787eca61cc8b305aca915a061319c88d2a9d9b79e83ff161544931330d1b5fdc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKYA0703195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44a102ff98687f922201df3aa0a798bd9747a8d777b506a6403d3d46882bade. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBKYA0703188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c54e82a7bffeee96a060aa8ce900568e09d0186eb65e8e9e3af757741a732b8. 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/GBKYA0703189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d8f21cdc7a630f25b0a2f099c2bf254a5be1dc4b9e1c73fdf829f949b92e2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBKYA0703194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8928dd189b66a63a185ce85d2b2854e7a628201162bf3376f1aa93aad57cf3. 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/GBKYA0703196.
Essential Chillout Vol.1: Love Parade Lounge Bootl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e248cc884fd200d7a6879b1da090ab6a75a3d8ad4f6cc84e9738a4ebfcfe0. 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/DEBL60602534.