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 0x946933067a9f09a7319fb6d040c981368437c8810d52761531c10fecd539c302. 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/b29500d6-fb69-4074-8112-5b2389dd82fe.json and https://artists.proofprofile.net/proofs/artist/b29500d6-fb69-4074-8112-5b2389dd82fe.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 0xf1837a243880afae33d6821106914e27b635ae456d2a9ad44197108f2a46cafc. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:23:09Z), 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/ITI020300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb924353e6279178931df03b0bb63908380aaba0c1624823fc98f82191b2adae0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKLAM1800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b0c4e06a144466e8e4676de8ef5bc4c4363b033c825acffd6fdedecb86a42. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UKLAM1800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ce7533c0fc03dc89f0adbb446284d67a10c960fbbdadd4a61ef6f22ae0fd0. 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/GB9TP1901040.
Them / I See The Butterfly As It Flutters By
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5dbc87a2e92c64ad1e4cc01b05ab5a060c28f426dac0453642e03d78b16a7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZAKB2459994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae46f4e1911d48648e5632e086b147d86861b26b4b7b5eb039e2ffee9d161d46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:43Z), 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/QZAKB2459995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727880b0acc1e61a656c4e958cc7a8e4adc9249d2ead0fff6dfb31a72e8fa239. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZAKB2459996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38f61ae9ad0429cd5eb871997e2c107c8e1813908409c151398d198179f3b17. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAKB2460002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76df1269a26452abbc5836610fabaa5c5f46db8056e47836884b1107dd40dd1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:31Z), 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/QZAKB2476805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589df7207cb69e5e22cb74f137140ae3dcbe4ca6b01e8e4ffd6167cc309839d4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:23Z), 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/QZAKB2476806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d36445c2c96671283a71411d77b7e32b36ecacb625710d773283dee00c34a9. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZAKB2476807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9700313d22dacd0cec67e0a0984c4f7c65b2ffde6566edcd0d50b089ffb3576c. 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/QZAKB2476808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32342dfba2595854df2ab533bb3a2453e69d4ef7e3be77e75471bc36eb2a6b3. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZAKB2476809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dabf67a9f588a783a1e9d294751eb9ec5483e8796d3e2327fc154b8a7825adf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:38Z), 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/QZAKB2476811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7d583e5cf89c85fa4da31d6bcea95b8c431fa95522c82c5e65dab6ce6c80c0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:21Z), 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/QZAKB2476812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309db854b990aeb9887b34fc751bbb5e01106ac95a97fc79249abfdb2d8ae33a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:34Z), 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/QZAKB2476813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885765e261b5d721f54efa16a20ec066eb079af279b611457c89e43badca8d7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZAKB2506747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198404166c09f4ed5818eef3325768bf6e9536bfb7bd39368f931a52370425ba. 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/QZAKB2506748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7809308db62cc187d3467871e528c8cdc9e4b6cc5ffa106c81b07edd6a1fd4e1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2506749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f4ea90d80557bf3c5f589a6cbcb748a8017d8e22a6c7e06d4639e97e12ad9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2506750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0792224be8ac02ce3d1f8385fa580213cbc2fd9b2a77f71c0e73459fcdcacbc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZAKB2510928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02984b714aa5bcab584fe03ebe38e85f856402b9f6057140da02cad6ccb5439f. 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/QZAKB2510929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec77f0f4e528fe2b1b17035da7989e6a0b06e56737f6419333631f28139ec9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZAKB2516251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09802833bcc6fbd868eed36bc5432c4f6d1827cedb7aad79fba066ba910888. 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/ESA011871483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4925d655e8be1291e6274badd571a070785582cc7e8364765bd84710181b6ec4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAC032301951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a51687b6b6066bdc0d2022f9f138bbdb13f3418a11db323e594f3eb7b99592. 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/DEZC62039517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e02586babbb10b25a5ad24a7af6320a21c34131b0bef4efb647f4cf93aeb7. 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/GBMA22168558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef1f82c4769dc80d66861179698f65762f1ccdeacb7de4a77d9549ded8e4f1. 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/GBMA22168559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3347be0f74697d91a2628877d146a8047007ab4b927399ef21601b5a6318186. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/NLM971900107.
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