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 0xd41f126cec00889f3933550ca478792e9f256198613dccbd1307cc9676cca0d8. 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/8956af19-9cbe-4724-9a29-afc20589429a.json and https://artists.proofprofile.net/proofs/artist/8956af19-9cbe-4724-9a29-afc20589429a.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 0xaaac482d9b22353e70a73076969cdd0b16a4f2de815e7bd1ff023eeca7885bc8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZMER2325992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6606f02d4deb545ae4e9fe1cf6615eddbac14e4eef8d806cf76f36bf562bccb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES62469739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073030910673c62a349cd0b968b90705fa9f496e58491f35c33252805270b66f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN62421796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328c0fe8fddb230fd6c0ad6ba7ac1ee452a9dc56373769f47234dae97dc1e98. 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/QZHN62421798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba313172895d0507600d3c1b4b5bddf7edd981da884d5c9e3df424b91840bd4. 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/QZHN62421799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ca10e116718e18622888220b8a37b04b3526c7d2ad51ac4cb51e7abe26e6bd. 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/QZHN62421800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ebe4e71f0521e14f079f071688b3a4c58c16d14b07b3b0a87facc89d2be341. 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/USLD91760709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa8229296e5fc744b93ac828b34f3ca5ad6acbae11386beb3108b4c9db15270. 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/USLD91760710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba97b92e57b2d4b83be42f1771101b273177d08ce7b7e6a61ca1076bdebe9e22. 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/USLD91760711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40c4057ea92f1e442e232c2930628dcc987f086548665fa6e0ee1296f4fcad8. 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/USLD91760712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7aeffba79f138e98977329cc12d59ffdc64e89a83d7bcfd53ca4f560b7b349b. 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/USLD91760713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55c40b5e14e3e660be8c9ee7417a44bbab62a05f65b2c929b8782369c5298da. 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/USLD91760714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d2a7298ee0eccd4b619dc88f8f68a44e645ea43d342b6b306ddcedfcb02535. 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/USLD91762507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8243bebacb7a7258a8bb148f852a46322724ff727a9cc5f2c6e934cd7c76e81. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:04Z), 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/USLD91763762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd351a5d390784aba62007d863a523af1b5e434f7b8b4eaae6832eb4adadb2. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:44Z), 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/USLD91762821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06da1ef91d4cebc8f7d89a6549001616c68932a14fb2a9ee437a026c399dc22c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:18Z), 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/USLD91763763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ff756f1980262a4daf4f49d698a2da4c31a3646f443abf061f7285ccc9d4f5. 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/USLD91763766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2fbe56d7a86f4667796008b26d4440465f3bbafd9f1b0165758aa8f2bac92. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USLD91763769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4daba034f667fc5590e42f3f993b469998791bfe300c6fb94d0c1163cb0d7. 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/USLD91763770.