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 0xfeff8dd37363cbc71eca89e63b1d34a042d76ab214ff97f03b4ecb25d4fc38ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edbf1ad4-c808-4a29-b015-e163d9ebef14.json and https://artists.proofprofile.net/proofs/artist/edbf1ad4-c808-4a29-b015-e163d9ebef14.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 0x06d3858e130b97f5025b41d014609f8b0a8d9d2733caa61d9953c232628fa94e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZDA52242405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60475cfc5ff4988a83c40bab52f6d74795b299e2e7a112bd3c23a49d7371916. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA52242406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd95d9bdc043751b8361624b364021e0d26213d76d5d6c814b1a825355ace4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZDA52242407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058be10ba540722fe44d1a9fd7693b1c177df0a99d3aaba7cbfea77ca1c2f841. 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/QZDA52242408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc63c522a4084da7a50e789a61836768335e87764272dc8d72fe555e303574. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA52242409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c91e7ea2be4ed39ba8716e778aeebd236b74f07599eb412f48026e5d0d1425. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZDA52242410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bec8f25120bef189e0b3a1a31d029dc9ac50926fd2d8a373c65e28551d3c368. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA52242412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e2a49568d977c227a3d0365f5462877c9e0bcb7d4394c7efae5fd90baecf98. 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/QZDA52242413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec83be0195d7ad7d08c83e492392d33de2c939b69180195209778a3a57f14ea. 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/QZDA52242414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd376fbf49f13d9f643f907e1f1c0dbc354065e2b9a79f8f9e58f73a12ddb97. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:18Z), 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/QZDA52242415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa1528f5959946d605265e6385af21c7d458cfa82fa6a4e44d563041e636f1b. 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/QZDA52242416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451ac4136fb1418e5e0dfde2bcaa0a77cc4086d35eedb5f230eb5917ad92aed. 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/QZDA52242417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5cca28addbe60bed500902bf5310ae2c26493dc48a6b7743304e064bc8bae4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZDA52242418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f169ae89abeba2aaf982cfeefd49d1ae423c31ad3001a300ba15fcadf22c421. 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/QZDA52242419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621f39ab77d5f51cc747b60457aba1a054032e87137b9835554bc17601ef0b0c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZDA52242420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff655ed7af8af27793621244f7cad264c979e802afe5084ec45748fd726002ad. 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/QZDA52242421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa6bb8a35e03104fac14590c30b890f413f66a4136997f5b724178026a167e3. 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/QZDA52242422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77179902f2b76c571df20fe61a17badf380de287e7c6e05c31ad222fcc8af3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA52242423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa938ad518899b4f63af4c62d9fc3b4d856d76c9b06d00989d0881fecad91904c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZDA52242424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba2278279ea9d2b3308472ccd53238aa0de115617dbde7e27ea655ee30a873. 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/QZDA52242425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476b0c46ee28396fb18c7591bbfaf23771ebefe6b252fc0e0ae16d2df8a1de69. 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/QZDA52242426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167930ad780ebca785cf0ec6d110df101f9957c6f19571ab585d09e3f02a25b1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:34Z), 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/QZDA52242427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47f097189eba9ab5c3130e3b69c909fc51bef3eaf78258779f2bf333dfe226. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZDA52242428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf25977c0e23b85ccd169c1d5745e9309d63314c70cfee1280ee5553c52597b4. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZDA52242429.