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 0x79c2592849fc9af06ef648cb652db16e4c4d2296387272ddc98d8ba4ff2b922d. 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/55e154bc-f0ce-4c9e-82b6-9f8fa7e44748.json and https://artists.proofprofile.net/proofs/artist/55e154bc-f0ce-4c9e-82b6-9f8fa7e44748.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 0x4127a72db36167a19656e62c14f5aabab4f9202c802cf80b169d340a323e1164. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/US7VG2053272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84ba5f6e95da5bf535618ba3d86e2ad260a36bdc544ee9d01bfdb0bdca7bd62. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:41Z), 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/US7VG2053274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27700721534189730b83c3644f4f0581896f197901a608e53ad21864aea575ee. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/US7VG2053275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109efcfc4f9273cbadaf07f0bbb2a483d75cc722abd7119d46101f421bd26e1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHZ42184261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbe0ee46448cd432cad397abe09caf9893b6a461248e889f4dc6def7d8b29a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNJX2205617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dc3902b5418355de3d35d3935e55238724bfc087e700e8d30b9257114a49fa. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:46Z), 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/QZW9N2265757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1629bf57dfeedb34aa06f713e6f0fb3538884123b95fd53dcb8dc2eba0124. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZW9L2465392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2afb18bb877ebae67aa818de8d7b1093f2df08a703ad48275fc07950e361d52. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:58:28Z), 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/QZW9L2465393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6e6a9e892afa3d885f9b26b288656bdf33fe8e815a6b01ae01be43611f3e46. 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/QZW9L2465394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9346de85f3789046e842a97e0de45f0109018baedb3e1da3c06516e8aa09feba. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:44:20Z), 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/QZW9L2465395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5772e1d38c3519c868e34b6d62a54ebdbf94fd6886c815de2178db5f0e7e04. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZW9L2465396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bfda905d90818911725dc274dbfbc808a9bf90c0f06e742fdeb5dafb488941. 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/QZW9L2465397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e3534c7b3fd78bf09728a07368010f0747413696faaac658fcad12d12eaf1c. 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/QZW9L2465398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f922095b67e55982c94d0b516f97eee2abd916e321a1bbe699f56957cb45b8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:35Z), 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/QZW9L2465399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181a069a3953fdb0e3c4d89fd95534592c745c619d218e146f6c068f8cd1424e. 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/QZW9L2465401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809380b5e2b1ed3e38445a80efba6a044f9b09f338a94dc082a6944667de0e1a. 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/QZW9L2465402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23df63726a05deff96feb280c8f170108f8109f12c11d97471f2de2eb3ad6df. 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/QZW9L2465404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987c143529c2f449acb8fa6012c85f8246ef6d12ea1a9cf4aecd2c3acfa1ec8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZW9L2465405.