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 0xc23d747f73f14b73600a36b427459cd1dfac854a0c03b6c4d053665e8bedea71. 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/f898ccde-019d-4d8b-8ce4-c9c0804b4765.json and https://artists.proofprofile.net/proofs/artist/f898ccde-019d-4d8b-8ce4-c9c0804b4765.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 0x1c473004f3daa5d0bf30985e48347d7284a4e741e6ea1d87644377016f70ce88. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:01Z), 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/SE6A92178172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6292c8b27c6b39e3854bdda93edad21d0ba753cac4bf16aa0cb61a34794ea5e6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6HN2157923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d92609b3910907f1c2e8abd03b5558588e83e3d19bd116c3246406207ae4da. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:11Z), 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/SE6QE2187225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4514fafebdbb94092af221c6501f0c7658edc753dece07301d54b52b88f6a2. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SE6XY2144022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08229b0401cb4eb073d58de269f20a7627f9939ace69a2009252f18bc8efc7b8. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/SE62M2147603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c72c77aa4f1675ab4e5700e3a329d82221570ef59c7b0476686908ffb0bf7a5. 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/SE5BU2298730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecb2444584f79fcca7336ff01a48853ea15458fc45a5481a18c376bc839ad8c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:38Z), 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/SE6XX2217914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14da4eb8fabb679f8dc49a1770c110fd5505bc8b12fc7352f0336a6f77c65474. 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/SE6XY2294207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853a0dd560839f9be0db69a5452cfdc6aa0c1d86b81c0074ee5663597d716835. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:17:15Z), 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/SE5BU2350445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3eb4fc65f3978f9906317df529b39769fc4965b7f1efd81276baf78114e546. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SE5752369223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f6a3f405bd97210480601bb4caca481a3d93f210edef7ef32a1eb922d5c58a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/SE6I32325835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cfda5a24500a15f4ba68ca52afc3e09ee4576b805f855a29cd2e1f53fca013. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:17:15Z), 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/SE6TI2381761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1394be3fff68cfa4127e88a237340fa00e42e543e1187737813627f530e3a20. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/SE6XY2334003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abdb7de88ba2f05330fa7be9d73059d5d31482b31fdd6286271abeddcd6d77. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SE6TI2369680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359059068c43d4dd62c9f03d591ae4fa968ade34ace445a82f2e0ac0a2263a08. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6SA2355146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad7e0d37a558e6fd1a7e34f19f8bba7f0ca48a6d390bca53f62f64ca9958a9. 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/SE6XY2365430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8781cbe9afb3a13546bdf4a2c77507f97af91b6c9bd768d99d7ead2b5644bbb7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE5BU2575297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd7e9c35bbbad13d353a8460d663f45a69591be47cb7c1524549cca773fa3a3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:14:17Z), 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/SE6XY2533494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501daabf85505861e530d9f399f6f8e5c42c55e866596249f05f8a190987d6ce. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SE6SA2540197.