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 0x3dd121bb530cc453990bf0a777c156b8c02c1f2e8c9515bc437bec7fb165b411. 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/a1e0ec76-719e-4e11-a151-34785c867c6a.json and https://artists.proofprofile.net/proofs/artist/a1e0ec76-719e-4e11-a151-34785c867c6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corazon Alegre, Que Bonitos Ojos, Casa de Carton
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 0xc1b7fa5a5adbce331f8c0ffec6f4bbad695e116b3e6c8b7b1f8e9a4377ebab4f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USDHM1921366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f240cd46b8dda9d3905c8ff751eaf4bdb57b183c1040e7096a46aeb1fcc77f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1921373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3233049e8431f9917b042b229fe61fc5e6b1ab1d48b91489aba09cb554f30f09. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDHM1921375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e66af14424bca4014aadf737423d3dcf37f5279bf2416b7d685a7c42a51027. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:30Z), 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/USDHM2018968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5bb266642ca9422c10fc3b6651e711d077d0543de80be6d224c749bddcd55e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDHM2018970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15feb8679ed54b13c9b8bd1e7051c74dcd5fb763a1c165a1945f43cee7ccdaaa. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDHM2018972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a07837d9bb5c2763d3f52e5d79e76017c5c05319ba2498bb8141d8fc781b81. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:54Z), 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/USDHM2018973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e67095ac5c00026fe9611ef2f10c5a994baefa3817278cfa0eaf2fec0a989db. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDHM2101875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd17987b8937b693a16cb1e34dc0c29d179a5c223b0f744b3bed5dda1ab8a3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USDHM2101877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abfadcc50e524b56cf54be0fa080ee94f79baeae4a30a7762226d74578d9e2. 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/USDHM2101879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e0539d696c15f7fa06f1caae7823ab713ff2c5a5ee7e2fd9d9f739e82691d1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USDHM2101880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cc189e0e879d9d0a94710e89893e8fd39596d3d7bf6502a6e04f60d194ff43. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDHM2101881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346ede0e07e41885cab3b3f5e419b1fdba37eb9c6b457a254e2ebaaeb5160369. 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/USDHM2101882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e482639e7465619af78ada9c354a46d9893d4f916d5cf0834b64aeef8add4d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM2101885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe11a240dc81df2836046f198a0dbdc876b55da5e264036f540ab9f4f94948. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USDHM2101886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471bc7bc6c6f56cb860b93bcf15c9784bd6688005e16068c782f738e13eab185. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P2497519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771e3ff144e5d018e8db2e582c55d94db1f8eb7993efdfb310a9f40c3e99717. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USX9P2497521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029d0eff0af2e43c7253c28628371d73c81e6d08942747e97a88157ea8cc0312. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/USX9P2497522.