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 0x4202eea914d3a32c4ec6fd3a7e6c022b6b962cb98900245131ca80ff9c6fed46. 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/a642bb1b-29e7-4d7a-bac8-f3bd04087408.json and https://artists.proofprofile.net/proofs/artist/a642bb1b-29e7-4d7a-bac8-f3bd04087408.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 0x96900ef11c1a828749ed6be0cda731349338331e4500f3f09c4423176a056a91. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US25L1700629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084bb5c5b98ca4f8744cae84059819b8396d02a4071d09d2a8b94a2b42b40461. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:33Z), 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/US25L1700630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ce76eb63cda16d7287f137b112a17bd9ebf2536f7250354a3466b96941df9. 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/US25L1800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da27ba956fd7a2918f3771b58bdc02991d2309fcea6d8f9f206c7c18abef09b. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/US25L1800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971fecc7b8d509fab4d4a21988a0dfff977cca3629b5d180ed46ac679839b22. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:01Z), 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/US25L1800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abed3bc8579e80b3310ff57c45db857d2b772ad8e893b72014e281f4a3feab6. 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/US25L1700633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d8d10e2ab801fab9d231d1a1b0fddac7dc26fd9cc53f31b5c15fbfd51941b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:50Z), 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/US25L1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7fd3ccb740c3fcf0d53062bb8a8862379c04759d576730e1b6ce0303a1d65. 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/US25L1800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb7d5f6734dabe276126531e1ceb933146421717cf13c94740a41399ecdb0b2. 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/US25L1800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55bd0317c63f33b66efcb5e3cb823faae014962841d9686159809e7b47fdd9c. 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/US25L1800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2990e14e6dedd76439a0998b32840b3256706ec11a37efba7ae486ded1ec4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US25L1800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa830975e5e20de992509eb0ac947ef82213d5761e866b19ac122ddd8aae8195a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US25L1700632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec6f8a6004e0ac26cdef44abd75cfbf94680c837c850e4368198606aa7407e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US25L1800148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccdc34f8db0c663fde6bbb62485760a89204936e59075833026c26f7ed9de3d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:47:01Z), 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/US7VG2171200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d6eb1c00b0919221b97f6e8422cb06b69463a36ccc54a0832feb054171629. 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/TCAER2083200.
Praise & Arrows (Songs Inspired by the "Lion Of War" Book Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dc9de34a69ab46447373c04ff5685a310a72f5949b3665852794e0d9f688d4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM9YR1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e28a8a6aafd3deb488739237622864909ee31cd09216010ef2b382e4359ba16. 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/US25L1700631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d6eb1c00b0919221b97f6e8422cb06b69463a36ccc54a0832feb054171629. 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/TCAER2083200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c001aa225f38eabf64c9aa328c789935a5b3416f038901b649f630880fa15. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/US25L1700606.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch