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 0x284c002c2d8b61b813d08405e63eadcd92f3999c9ffe2626f33fc0d22f17d8d5. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47f90591-391c-42b8-b6a6-0ac6d35f6b9d.json and https://artists.proofprofile.net/proofs/artist/47f90591-391c-42b8-b6a6-0ac6d35f6b9d.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 0x6e076e5136ae76419d394c21a47556e0737e0de1e755b7467f8fc1c39b35d624. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPKI02412906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463e22162aac084bbb61e1ee1ac6b39abe6a80850db2e1a48d954b13ff7501b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPKI02414825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85beeb2770795c60f4eaf0b161cfb43f87bd24ddbfec2d4cc03c31bca0a84018. 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/JPKI02414826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e076e5136ae76419d394c21a47556e0737e0de1e755b7467f8fc1c39b35d624. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPKI02412906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df1cf1c0646c4998aaae9e8e2d668bc338df14c74220363d754f3b90539395. 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/JPKI02414827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf03d5acfd1e6dd7986016a8bec194fc10ee900dde9c2bf0d810e13e622c6655. 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/JPKI02414828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faecba63dc5950cc833011d1ecbfa0a90be1ade7a0f5154bfb03536ba5010b4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI02414829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a902bcc6bd5f93ee33d41b7a688755377b421ba3e8a9164ef2ee72c399b2f2b. 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/JPKI02414830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bf8a1e13cf5f95c64a95477351e93ef2b2716775a1454da7e14a0e100e1357. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPKI02414831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3a3ca1584ca6b0f34c7971812f300ca65bb501e02c812f7f25da0c1b7b382. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI02412907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82225bd9b9d34773c7707816671f74baff2eb15a0841f37d2e2c9f7fdf882bc9. 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/JPKI02414832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715526bb5d59be4c07a5371e95fb6cfc71c63b5a6d11bb5df20cc11f03775a11. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:59Z), 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/JPKI02414833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6dbec25e5f3302e1bec39352135dcf8c3755a78fc1c544befb93417c1dac6. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:31Z), 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/JPKI02414834.