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 0x634000e3d47b7589ea8c1919589cd894430a5785cb5fec653782a8e616ac08b0. 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/09787ffd-5772-4bf9-9ab5-7ff16aaa91f1.json and https://artists.proofprofile.net/proofs/artist/09787ffd-5772-4bf9-9ab5-7ff16aaa91f1.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 0x980dc14ef73c820adbf89dadb5d12717e781e29d9de8a8caea5c283ea383d64d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTVM2469316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0deadd30fa8e4c569a6df66bc4482991dbc50a18c1e8e2649ce747efdd94b02. 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/QZTVM2445719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8362bd335f5f84e99d163f6c2e21953e98302ae346be157320e1a975cd2e842. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTVM2469415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3c694886d5d144d366414d92c7a4b0deb25a96a70db17d6dc0b6f3e0de85eb. 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/QZTVM2446119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3034b0339c1af1b145052ce6b63e30e0e90dffde8145975a78136b4141aaa875. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:44Z), 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/QZTVM2469307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27681e266bc79515c64de9a631ebf89bdd869d0284fbeefa8f9961be5c0e5a4b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:11Z), 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/QZTVM2446783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0064f1444c50cec5d15410dfe011486087676c1e913f35fafbb988a44c569e28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2445900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f60d7292a39c96f753eb4612cd53e281aeded6649115d10eae4acf154cdd3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:30Z), 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/QZTVM2446007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683a2ad0a34ea9e409a7b72bd6a070183e48076aa225d877e1465865075c0393. 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/QZTVM2445671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b1a12e936d2f3333ec520562b981a16e6a11571f3fc1f2ebea807ec1c0044. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTVM2469228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d0bf0333551c408768a5b78a309e605aa3466cf0bf9073cacb7e204385958. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTVM2478416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e7aa3460cc8b36c4b086b7a8323ee388e0385e30f11d42d9ecabcdd1ffd3d. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTVM2469499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22d2ca09fd581480ca1894b521f16429791676358c200dfafdedfa004ca84d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2446073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec4998236f22b3ecc5b273245f691743c01f1099ee8f2dd72135e24c925ae31. 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/QZTVM2446784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4394b9bee8cbbead8e76e13744487cd930904c151fa7cbc1406f1babb3350bdc. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:20:19Z), 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/QZTVM2445776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f46aa143f23ff7ae4c6c0e1c4024f76c3711b931edd0e7f84c612ecaf04ae5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTVM2478403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c79853f17272912c02d876dc0a95398af9cfbc3f4a42f0d84ac1f4f333a8e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTVM2469501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa353d198842f853b9cf95810b4f28623fc005f80592a9a9618602d41078f59ae. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:06:37Z), 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/QZTVM2478422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c4711a67d21683c1a3767447dcc364ed8cc21ef0cf8f79fc26f6a6390e18d. 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/QZTVM2445762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263c20da6ab244928018777270b0f4696246b2e264cf5a7ee58c5b6981ba0da9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:12Z), 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/QZTVM2446780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c7842d618e3b6dd22357a68bd780139200c74381e8252318c6249ebe4a61fb. 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/QZTVM2446036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d7b5971a92b202bde4d9b7f09ec8b976aeb0101c7833d756f63c5fc794766. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2445755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da6ab5972d7ba093c98ffacfa583a40b393f70f5707d66967f1550f42ec4c6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:00Z), 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/QZTVM2478421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec171fc1a6477db154c3ced0804136584d62d46da110d6bfbc281d69e2ef3d08. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:17Z), 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/QZTVM2446054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc324d44a08dec7235c1f58c8fa721ee2474572f671feb98ad6337b290f31ec95. 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/QZTVM2446214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7358319471551ffe18436e8e9e686622ac9f53ba96ae8236302118d150e274e. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTVM2469474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf420d6977ae768195367a85d63970183f1ee25f38785acbe263dbcbbb955e407. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZTVM2469397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0552a8bce67aa14544db44ff73e1ba6f871f3e994936b89583fd373108a8689d. 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/QZTVM2446149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24f4a9793c499d8cf216fdabbc65e29da4abc5fbe7cb6c954d4960643f33314. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:58Z), 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/QZTVM2478406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c870c62370c7b4d48f4ad9fb9f9355aa6f7f4613df70c0ae03a5d41d14556c6. 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/QZTVM2446198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d36aef35a6dbd168ad525ff08c4cc48b770ab541a26341bc7d7e9d56cd42243. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTVM2469306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef15044e00b48fa2c0abfed77a247a8f53de0d322786a3e501fca94ee0c5ec4. 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/QZTVM2446096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e9e1f15c39ec272c7e797e01cac14e56a471003fcb7498c89c8d5f5f75956. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2446009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ea4c279f090b527854c74a8e29ebd013492d1d79063134d201d494f96cb3f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTVM2469427.