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 0xe364b6ccc7447f992bad18f85570e30518307f5fc81055fe95c1d476e984103d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecee54e1-663d-4295-a1eb-a49619da1b98.json and https://artists.proofprofile.net/proofs/artist/ecee54e1-663d-4295-a1eb-a49619da1b98.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 0x6709dd9a7259b61559d28366ad9a4a2d83f5c31df8aab17dc5c68a55f4fc5044. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USX9P2042045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88455c8e35a27e3939300fd1b22afdf2e30a4b7c53c93f6515f68c84adebf935. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:30Z), 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/USX9P2042046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9c4c7fef8ba17940ab4c5a5f86ed6260f7d0c6905247030720f953ee608993. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:58:36Z), 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/USX9P2042047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc58637ff47d155a0beaaf0eb9e915660ae946d24e098a0a9b7e5083a52e179. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USX9P2042048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754d382523120a43389cb08922ee14c84bab6a47b8a9fb4a3175241549a8271. 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/USX9P2042049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5883b58d8c633633dddfb5946189d4d402f8ee139ce1c36b496911795d90ff53. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:08:46Z), 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/USX9P2042050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36009f9107497d3a2a92eafd56ceda1fac210928cf88eae449065b8e57c5086. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2042051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ebb0de47b16478052199b17d6e3d684bbd5e36d9517f74a5842551a609a10. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2042054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2290e7e1f5c881f722d2c6a1f167ef86d7db27ef03810ec5dfdce818f124c1c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:34Z), 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/USCGJ2294945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b2d21264be849f6bee902315d88422479d283817e6bee4fcabe9fdef4f039. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ2294946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97630a5ef332b03ce341740cac0778e5efa1432d8cd92ecc99b9574f18698faf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:15Z), 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/USCGJ2294951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed97f9874b6148df328f7162bf111718764ad998ba1f81ae4ffcc7f93634c7e. 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/USCGJ2294954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6294de9efd69d65b251819d53f6fba50e4f6f1d426e8d30d6e7752d23bd17e11. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:52:09Z), 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/USCGJ2294956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e057dcf28dd4045c0ef9d1ae48c9737714b9213b67009e8dea9964c750f8c93. 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/USHM22423604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eebb0eb63bf43d104599ba9f581622ed832d1a9c42673576c19c5a353f6a63. 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/USHM82502285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b990246c1f51b74b46f633c492ef5f1a2994043d88dfcfba0ef56af6afcf7aa. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USHM82502286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52513490433637c172d9abca4facf7bd049049008adf9659ed3b2bb983db8951. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:01Z), 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/USHM82502287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90acc1986a5331bc54d94fb2274941a67b9cb89b425f61296ad9da61c458ec1c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:54Z), 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/USHM82502288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734a13fdfb139790a0e7691b0a4f9d254d0bdefc7649ecbc93b0d0ceb9a484bc. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:12Z), 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/USHM82502289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d5b3520e1dcad34c108093ee5d39c0cfdb6b73e9dd01d2c2760e6a7797de1d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USHM82502290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc05e38b9089b5b7a946a07fd075a914fcd5dc3bd99dfa23505ee0d1b4330c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:02Z), 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/USHM82502291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f05c28aa516a56d106b13d2d8d18e16adb716f755e89be67d178f1ad591e9. 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/USHM82502292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfbc8e7c52a2f680e7e89757898f41f528f4f498ea35034d6ceed0a974aa417. 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/USHM82502293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eb59fc87eb66dd97cc5c4187400e288a8b4008b297c1e744b86182423fcfab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM82502296.