Puracane were an electronic music band from New York, featuring Ali Rogers on vocals, Juan Masotta on guitar and programming, David Leatherwood on bass, Susan Elinger on Piano, and Tony Diodore on gui
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 0x42fd1cde09f3fc09719ed663639765f934a0305ffe04d4254296f364e04c713d. 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/9fd9117f-bb53-4bd1-8e4c-5dc8a397f1a6.json and https://artists.proofprofile.net/proofs/artist/9fd9117f-bb53-4bd1-8e4c-5dc8a397f1a6.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 0x2091a4a4632e59f78c6196275746911636a06279dbecb71cadd43a71e61296a7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:26Z), 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/USUR40305404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36caf750b59fe3045951f778b91d61ac683045c5ded07f050b0bed19c3b209d. 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/USUR40305406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02033060cdebd953b8f9e569d70b8f58b470110c94142c0cba84768803b16c97. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USCGH0674093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728baf36010b3b1368136cba47a44c364f1316d39428c6565a1a7f5f8d5821b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGH0674097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5148445e9778de970bddb1b8a72bdadc4d55fa54ad232dc23405d6a4d1f0cbe8. 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/USCGH0674099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca413dc12a634b151e85fc703918ffd0e19bc8214b9184fd1c816dbceaefab6c. 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/USCGH0674100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1406f281bd5d0759b32f62e7ee2bc880df1af61235051c85ab1cb6033501f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USTC80994582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a63fa2a316e374fdeba9a0f0598b8e2a296e4db867fca43888d8644e421108. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USTC80994596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795984fd3ca865ab8379befb3887255c596f3c49f10126f2af1265f0200abac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USTC80994604.