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 0xf01f87fe78fb22fdbb6d050f4864dba87d2dd5bc8e0f6d666b2fc8140d857096. 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/3a06e91f-5811-49bf-8640-0cbe3cdfd75c.json and https://artists.proofprofile.net/proofs/artist/3a06e91f-5811-49bf-8640-0cbe3cdfd75c.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 0x8c95ac1cdfba0d94feaa51d7ceb00120fd9d7dea7eeeb0539667c8fb6a49605f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:33:28Z), 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/USHM90564182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77731d50cc82f37792ca89774922da2d880a1ff05f2daaafeac4c5d40103296. 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/USHM90564183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0317c44d8b47dfb7c5ad69c6318167ed59a6d48130329acc6ce391968cd89b0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHM90564184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5614ca27a6b1bd3c199c4e99a337fa844339c649e1174f9ed49a2d8b498d3c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USHM90564185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00452d2270fca6a48ff7aaf31c578d6cb842c721b03a24f68b3a8829afa373e7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM90564186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cabc979577ee5be57df62f37176c85c045be1a79b190dde606a3ba3f52972c. 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/USHM90564188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20603351b23c3bd6649c471c4e8087302fc93640aa49976a87c123859e57ab. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM90564191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121484d2e79038dce6c386cd1785a90cc95707323aadd82308234e6625505d1f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4Q0790730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6e0cc27e17cac64d88e0e8c7fdbbbb454563c6f0fe74ff03c0b5d6009619dc. 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/USL4Q0790731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafde259d11baeace21fb76085217d11b7f4242953dbe4345b2964d6371aae12. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:52Z), 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/USL4Q0790732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf592ee6cc02a9187f6339fe60dc8819d1a7b9df5db95ee00913a22c3beda81f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USL4Q0790736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a809fceb42a905784b410b82fb543b8756aef2c6745d17fbe3df482fcfad8b9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4Q0790740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d6bfdc8897438790f886d1f551d6ed419c6a3e5a6a57755ad09c6ad55147e0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USL4Q0790742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5939e4be8dc4e03dddd85888c23e867aa93eb3e39147723d54d9347690255b3d. 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/USHM80871574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1984bbc4d5293b505c583446381ce38b6a47b9b2e4832a029c4b719ff624c85e. 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/USHM80871583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa872e1f30f8cb65f6f02462e9f10901038ab87385a09782ef22b868c87fc4448. 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/USX9P1102843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbafa1f4bc106b52831d5780471245f7894d2a0a7054bf144e1d7967ff59108. 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/USX9P1102844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d11e33fc376878650d834b0ac7e238501d4940264a692464955134ab42d4c7e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:26:03Z), 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/USX9P1102845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabfeec4b69c3a38263c76876fd4e9988988b467a8168aab947fd13dafd0db94. 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/USX9P1102846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802c11b34029944d3c12df233882cc6277bb1fd293d52d3bc60d4f0e582c3c1a. 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/USX9P1102848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa1359a6032c807357e2c69ca82cb9918c4f5406640a705b86150e94610014. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:02:06Z), 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/USX9P1102849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6433e3535038777ea7eb4a40c30a45549a14b5a74a2498403b7fd574c4b8aaaa. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USX9P1102850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3038c8cf42f406d7063d21e955cc82e7a4f208ab7495645d81000dfe303d6ea. 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/USX9P1102851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb992e00a0790b01cd63519ad5d73217454ced995fa039f4d8b1d75fe07a9cc39. 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/USX9P1102852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3253fe8690a3a28a4d088db94c22f09c9d5f2d7693e778081810c5bafe4c138. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USX9P1102853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7bb64018f75822b845d6db22bf9dbd538dfb0c4f64db9e8b970d72b43e3fb4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:04Z), 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/USX9P1102854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5867b072df8d1d9d2c09d795453ca051549f9444b3b35ee8f348bbcacb481d3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:07Z), 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/USX9P1102855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6286f7079614aef303d7f770a6261f76983c9f020ba5a5d2eed357984fac9b15. 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/USX9P1102856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d3b8bf277f8ea40ae36ad87b0982a9625dbea55fa7ad11b79f1b8a642b7ec. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USX9P1102857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac723e35214da6bd6bc26f5d9b666004945e2c4deeec72cfcb5a8ff3d5388b7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM9AA1590972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040976217168698e89ed655388f22e0abe6af3a11fa38c2c7a68d0a5c6e8e66. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QM9AA1590973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd1c707da4035e7052d98d3539f1c19f653bd52381de82b4477c192c513b8f6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM9AA1721768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318abd3b8412132349dac46b81accd7bc4f8aa0e6cb0e43669178533b477d76a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM9AA1721769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ffa75e9aa593e8f97997f65f6f7259129f732ae2bf4a38748885729c232229. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USHM91959494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56de2831e42be55cd7ba1b0926d2837987a3a3b161597bdf15f8a806e537e0c2. 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/USF4Z2200055.
Of Wood and Spirit: American Guitar Stories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9a8077b25d6df9ef362c21557a1bc9a0c9d5b9bbb55d5620e72aac5b0a406. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USDH51611549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5a02630813bd784a7a37703966675621c3e453c43ca0f16b4ad30199e8aa1. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USDH51611556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d629cfea0c591e25e2f514ec8c81c362e430165de243ecdadaf5189b451a1ec. 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/AUMEV2152384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f403b992ae0f7e3fbec44fcb7c6369ca9f4789de9e7437132586fe58c4f3470. 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/AUMEV2148177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d70deefa0281b12622e567d223325ca19dd0defe100a69430f37862b66a7d8. 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/US6QR2400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb95483760f0608a62bee324042de2d45e2e788249930a2d9faba4d86fca80. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/AUMEV2148138.
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