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 0x8533faa014d6efa34d5bb85717755c464a752a3f08df95b7b301b8a05ab510bc. 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/a40ae394-6622-49f0-8648-b2a6136d4d5f.json and https://artists.proofprofile.net/proofs/artist/a40ae394-6622-49f0-8648-b2a6136d4d5f.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 0xf7519b80abcdbbdeeaeb01a60db9a1d00fd5b4c9e6ed8a941c17c3a29393e1c0. 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/DEXW62400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9800deb109d3dae9c5bff5b477449581fe39894658b78b0b26935c7361e68e58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXW62400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8adc0971e2e68f0a19b12501e1998ca3015e2efddef6fcd2384f47c9e424709. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXW62400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3e7df1889fbd91a521e80b01f3b0ca42e62d1b8cf6932ba14bf401964e6262. 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/DEXW62400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eb8b6f85103149a72084227ea974751f011bff778ed9212a97c5a72138ed49. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6ac25c831276998cbbb4d8dd6053b5557d9ac3b0a0243ee4e73515e416c48f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62300427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7ae0f2e83af3481909d8abbf421fc07f3bd1cd8a3a39ba3dc0683ce3161d9d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ee4df8ea053dca4983816d63670ec523bbebbab18ac43f61f1875b6d0acc0. 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/DEXW62300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485184527d61b9435e082ad488af2a7d8a8b7137b2627eb4c41720c6c03c713. 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/DEXW62300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a406edaa042106cad482a2603495526ff2d29fea4f46cf9eb2e30157258819. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69fec42079895ef1ff5b1c1d68e48044b3afea2756652cdd52f799d06facc32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEXW62200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d4ef565a4d4b848a9d723ba8fba12d5f7c121bfcfd8ccc6e24c845ed1cb45. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bc01039294594ffe68fd3d4a7441533d500fb1ec8fe86a0f7c804d62187ae9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEXW62300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ab8c47864c0c7c97197bdc277b4cd29e096aca16bc30a44872764b4a3f5f2. 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/DEXW62200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4352759ac318b6921963ba15bc2f9b906daa6d792b00c980e213f9fb9a960738. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEXW62200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a4a2fbd1a97a34cf4a92ce31836a3e54be93369e670bb8ad1340b5fbdcd2e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEXW62200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816524f90d4d70f76556bde5668a460c20b3851e44dd97a6a3346606a1b3df11. 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/DEXW62200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa700d628ca6017863084a03015acd05e2322197d8a0c665303c3255c960ecdb. 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/DEXW62200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52be61a481a8b4e1e8c6f7040599ce25328dbe71cc371ae14439b97be79313e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXW62100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a5083040303615987d7de05e58f5c4e4f2291ff68446c14ab539fe179bd1a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEXW62100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a890939487c37c5e074a581f8afa39845bd321d4e500308e84aa9b74f73244. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEXW62300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe97663251c4c9999848b9b9bb306704f5a50083048c801a7b6194675a20f1f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEXW62100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a151669dcc927be41d8ea5cc8e61cf9b514894ed5e43045019f11cc34d21f. 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/DEXW62100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e82604fb1d13211b1a31ab170827284600ff4b5923fffeb680cb421bf4afb0. 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/DEXW62100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f46c2830d32e27fb0bd352238c4a5089e7d70e33938b6f0ba056f064b4134. 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/DEXW62100109.