thumb|Chef David Barzelay in the open kitchen, 2015 Lazy Bear is a dinner restaurant in the Mission District of San Francisco, California, with two Michelin stars. It is owned by chef David Barzelay a
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 0x4f0683c6fee97ff83486a78117f70a81625a8d7ff3a4b5fcd21aee7103e44023. 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/b3f8f17e-9261-420d-b9e7-474635177fcb.json and https://artists.proofprofile.net/proofs/artist/b3f8f17e-9261-420d-b9e7-474635177fcb.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 0x82dd06bfc7f37464afe6c554c5d76c428d0fe4894d56650fda88ce324041b243. 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/BXHBP1901062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41010654fa067600306fa432829695aee6521d9afd840ac1180d299e823c2fd9. 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/BXHBP1901063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e18a862c734df4c824d387dbf107ffdf84cf40915339d2528a34819a446557. 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/BXLVT2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66234b51c20a9b7e12245b939be5cd18264a18bfa945b4c148fc22f2c75f5878. 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/NLT2H2300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41fc020b44d68958f6c4cc484efc197de37df69b116f55ab8dab4689a58198. 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/BR1H62200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9ba83770c09cea4448275bf26ab9d2ee8196116a1bcf38c23380c7bf8e459. 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/BXIED2100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44934c41eb6a56a11f40dea58faa5c8be53f373490415b023265a3e450dd12f7. 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/GBLPF6676065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa423402503139c432843fbf52b73643c3628f8e8a7f04872beb9d1edb82c3b69. 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/BR1H62100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c8d271e0388a73b6f6435f07c567e0fa857bc66e48c7f96e897cc9270fbd05. 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/GBLPF6669565.
Sweet Disposition (Vintage Culture & Lazy Bear Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fb3215b758a165291b4b8dff65aa91f6e46f4bea4a3f1434f1fa60422fc093. 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/AULI01923740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbfb76b070a75f28f97abb101bd58a365bb2272138bf426fc59e931593a2507. 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/GBEH41810185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d33d1911b6ab04f852b62f32c25750fa6fe040490328cf1157d037731c9b5e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEH41810186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d6935022a54775ae782bd180392c837a455e429d7034524ab39592332a2409. 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/USLZJ1826648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c4471ab1e6a5037696c54bc0e516195aa85c7328594015c167d514ef1e767a. 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/USCGJ1888554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884db3479acbb1f6db7fb2e53b87d65445b67b3d1c9c222fb2871dc41aab3488. 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/CA5KR1562737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf8555b7f65cdb0bac9e538f93a1ed16499bb2c25e9dd746b5654d8a86877a. 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/CA5KR1562738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf79ee221541040e1a4979df5f340c88476b06b88cd46ec0f1ca32275d2acdb1. 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/CA5KR1562739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca11f187abc5e7c8c27d32293777fdab45fc7a0680c2827403c8b95a7b66a92. 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/CYA111600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc242ffc0f4c3dd2c959da79477330579a1f972f1932dcf5f309f6de24c22fdba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS1Z1643295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ca12fdc82b4e9d1e22c4857b39f9cc496ee826a93f302fee7122914ae9e90. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZS1Z1643297.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cb2e11ca99c0961d3b8a74319fdc4acd7bd070fd02dd68cdafc1c77393a477. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBQ2F1561492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bc622339198d36bf7c235f77147e07660d8eb1e5ade6dbbb24962e0d4ee9c7. 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/QZTVM2133279.