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 0x2dcab7d27020ad3a543c29793bf948a2d32ba0054c37ac81f26a89ef23c5ecd7. 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/14b4acd5-ab2d-46d3-b23b-793b44fb66de.json and https://artists.proofprofile.net/proofs/artist/14b4acd5-ab2d-46d3-b23b-793b44fb66de.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 0x8ba7d3eead5e465dc89c3c907befbd5cc0c8f89632deb7216f861b3cefdf804a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEPI82442589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc268a65b51e7704a98f0494b50e8ca88fadfd432efed21e217a11ca66b48885a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82432455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf5c244a1819e03e7f8e62daeb3622e51f72b1f3496721e580326d13bcdb2d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:56:41Z), 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/DEPI82412654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f7e01bc5588200224daf0381166622ba96107263e17c7caa4a020a01719d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82313607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553524ef70b08220010e55ed55247d74550a5abb47ad489560115bc4caf365ff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82304576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5890227ca7336688c097b077452ddff3f326fd359be02a811fac2462cd15a31. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3HH2172460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2904374f6be9a75c297c44a6a82ecf2ea04d58fb9cf72a309cb086db322241c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU9588290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59fa4ab9498bf1afda0905e9fb04220cae4fa6b7543d213407d92634dcaf424. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBSMU9045025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5164a15d69338c15446840e40bfd0b0f703602dabb15fc02e78c056884329378. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8535740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675fe0f6dc4285b4390b97b99089ec489784a5aa17f26b85e4a92c025eb60113. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8535820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc6dd13910fa6cf14409337aa54e96c5a3ead4a1d3f0e7187413ed78b45cf20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPI82303899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e80ed0d8c96ee538f695c114db22367ed8ad62ab3ba9350c093b17d3e38b2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU8556290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3718d5c60063513ad30f5264eeadf53b3ff3da9c1ca128ffff3b4d48cf7718. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8556291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0334fc467cd3c0b928849dcb56841a67579e65f69b67543ea040998cf88feaf0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8556292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe7351109e280cdba8f0d54e2ea609938b7ee26bbcdb0b07070f833cf50945. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU8556293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a30230cb82db5c2d5615cc75e349a4d2a6b9f1f2514a450f64fc957c78e07c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU8556294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec7cb9dbb3ae25a3df4dc2587854c25ba08c18b59173c171cdd2a4edc68d8d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBSMU8556295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afbe8f8ce069316c8e8d5346809ad979bdbc16dad1cf2dfa613d1650cbb3f6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU8556296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe7bf78caea2ae43512623874f119a053efa4c2f1b9e69f814d9b9afa87d0e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBSMU8556300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb124669d91e047809786e791bb5098df7d89c4662dc71c11dbe4b94ad3f3ef5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8556302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71611c460642cbf71e48c0870a6240e71c4f78e9af17b43a660b5d469c9b7772. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU8556304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b5aa12641b1b3a283f9de18f669d21a0f837ef6076e5d1f7ce39213a31bc2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPI82218600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b7f83267649183c4a80ed1758996cb1b9890433920b41ec9d0341fd7be6ca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPI82218591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d22c8ae6c2b029a3924e4d0e454f692386fbc4b25110b7a0736258a8e368a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI82218601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bd190a3afbb841271e492e1e877802b9dd4384c756869457a72da4f705bc98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEPI82218595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8948fcce0616d6eb1a989c9ac15896004a2aeaaa802f16d20824f2a45fad2091. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEPI82218599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea10c5d027d97f07bed13a997c0de5e92e4bca1a9943af024ae7131b7382209. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82218321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2062a43ac47351875ec5bd494af8e84173f3fc3b9d11ce63baed0ff124bfb66. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEPI82218592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff22e4a538e56c943f9dac225196622e33f2366fcabfdd6676d878c19937baf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU8597205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dc649040642b5e53c8cf5ee506a234e06a4128d837a1c86b88a996ef971384. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU8597206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0cb75df9cd3fc8e5750825217d62b7883d928df6f9c0126b6edf9e63817c9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU8597207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5924e472adccb63da32894d79a126e0234bbdf012dfadf3f3480cebe1c68114b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU8597208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e9eb811cda490ff3e8c17e52e896c9b85221b30ac6cc50ee90b7c3678f8cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU8597209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89dfc8e7c15aa3dc0c84ab3722cd81edc1b53927e9052f88a5c8b2edc899b2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBSMU8597210.