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 0xedc638d120a70effba5643299a97b23206b4d029cbc7f74d1cbdd7a6d04aac11. 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/c210c85b-627a-4bf8-b1cd-33c09127086f.json and https://artists.proofprofile.net/proofs/artist/c210c85b-627a-4bf8-b1cd-33c09127086f.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 0x01b2b98f3a6677f3a898f8cb932031a53431068fd437708d3c966d0baed949e4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:40Z), 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/DEYI51900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b81feba58ef09b281fbcd86b5150add9c5c2fed8dd5e09e0aca0d0c2d36c8f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:19:50Z), 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/DELJ82010836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029fa005238a74d3c44fc0ef3723a6740ee7bea1df2af712fbe1269c99bec497. 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/DEA622300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3db5199c6caa7fb3c0edbfcc0efcf24cf2273aa69325877f14c2bbb87f75c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEA622400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39696421b066d3fa70e15ee62c0ec95c6d0985b7f1752f1dc4057edb2ab49a3. 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/DEA622400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa720f3306d91faf5d1d10b7284d4f259c6c0191274cf61c21e59fbbc5534b504. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:53:31Z), 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/DEA622400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461a8b3fe8a52b9d11e1d6c9894e839b690531279f00b53f1338e90f43d2dd5d. 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/DEA622301783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c8f36882b8db4b1f243ac8f559526602a1b9750b21be4114009c1d2aa21e3a. 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/DEA622302581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029fa005238a74d3c44fc0ef3723a6740ee7bea1df2af712fbe1269c99bec497. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEA622300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3db5199c6caa7fb3c0edbfcc0efcf24cf2273aa69325877f14c2bbb87f75c. 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/DEA622400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa765695a76b9a7da9c609317166318f669514ebae386d2fa39735499c38924. 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/DEA622400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae97289e69fe98f4f79412a81d685dde1d4f5c7a9451215d550a352fc119382e. 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/DEA622400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aefe212e76b71917817bfbb68eb6dd09e9a146c0a384df44c21d52ee7b08eb8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEA622501489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad906a8ad7ce1e7535e8041de9ada59f571fbd7df0d5c5820e0539a5d85438. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEA622502377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976923b2d584772ac64aeb26a2813754f4eb6619147b457d0682592230048f79. 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/DEA622502104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aefe212e76b71917817bfbb68eb6dd09e9a146c0a384df44c21d52ee7b08eb8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEA622501489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb949d7e110b14e3ed59822efb98e6388bb52b9f2457339a03687cd05f8ab9569. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA622502144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976923b2d584772ac64aeb26a2813754f4eb6619147b457d0682592230048f79. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA622502104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881705ca8381ec7326c1f4ad6c99748c85a7e57c07a72a2161cc2f783e29737e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEA622502955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f91a50f458c9e5cb9a753eece50bb7c223698bd4806e56b99f2e83188be856. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEA622503616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeaf684d4221f819200cd56bef03bc20856256cb94f67bf963336b0d53f8699. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEA622502136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57693c2a00aa932fc58a5c2825af0065cae22a0dfe1b5b06dcfaeb916de944a3. 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/DEA622502137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aefe212e76b71917817bfbb68eb6dd09e9a146c0a384df44c21d52ee7b08eb8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEA622501489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976923b2d584772ac64aeb26a2813754f4eb6619147b457d0682592230048f79. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEA622502104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551eb492977b9e006ca9312b6fa3fea6871ed5fb01213a8a2aaf51695309ee54. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:39:23Z), 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/DEA622502138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b339dd5a64234a86b69ef7882daed515246d82d27a4897a7bdf4b7abf8224. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEA622502139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507221a69f7b7f4d8a78fde42f17be5ca33363b403e67f552fb66e51f32a9897. 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/DEA622502140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147b614afe50e9c6c7460426ace9f47db0042fbe790b7abb48db65f2e7178e53. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEA622502141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520fd66ab9ff6c77b7a4e55796621b9124c53ab9300fbbf5a56308306079d6a0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:53:19Z), 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/DEA622502142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd8bcdba9bfec02efffac3b51e925dcb2b2f9c4895289f59079bfa525ac7e7f. 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/DEA622502143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb949d7e110b14e3ed59822efb98e6388bb52b9f2457339a03687cd05f8ab9569. 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/DEA622502144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a6af69c622c2cfaa9561fd5a5e8083fa2753409c108cc0a63e6252df5a7a2. 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/DEA622502146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff10a2d8712f0d57677522409168d4e9700c57dbe91fe0eeb68cc9085011dde. 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/DECE72303671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6767c71cb5ffee10387f22b5bd5c934fbff65838602047be4aa264e4ee445990. 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/DECE72100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86d117b558d1248d4d610628eb15f8091b50f68b85bba007fe970693457e54e. 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/DEUM71800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77ffcb8550ac2bf336a8d72fdb4ec4ae8e174fb094f8d5a28db8c112326be5. 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/QMEU31617434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8996f2e0c41e1c3e886f5b16994d0183fa7dd12ed1e2ccb523586174f8d8a. 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/DEQ022151507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be84b77a3abfc248f3458d932bc0916a2b119007997a1331c1ce1b436c96541. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DELJ82017749.