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 0x04be7efc0f393f61c978abef2643ca2eec98a1bea50aa9095fd4cd0aae284043. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eabf58c7-daf6-431d-b5db-da8e1e163688.json and https://artists.proofprofile.net/proofs/artist/eabf58c7-daf6-431d-b5db-da8e1e163688.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 0x19bff809b68942d8002209f03cbf738701f8f5029efd2e593f08ae341c2657f6. 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/CA5KR2380281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1827d50e917df3235b53de836a165dcead5e08c7cf32a81cb857ad305a3d7636. 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/DERI31400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c692360c2ea8fcb21c89831501a16e340b15eb295cb4ea0228fbd7e591e33f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEXN82294738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0870e58cc3797a3d7c31e0e138e2b07397f958194a7d6fac00539be1b238ca11. 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/GBKQU2428671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84799339363be15e64b4bb2f9685feefc86c1bd682208eea5c3e38fe35d1642b. 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/GX8KD2469397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58eaa14048507ca3d6b1e6b30a5447deacab0f4e1699aa6fdc23e07dc043617. 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/TCAHJ2320480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f0cdf61e76b32d0781ab00445e77ee725d1e3bf745c3bad7e69fd34b9b74d. 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/NL8NY2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5e5c070a6f29c6dd67c8ec773dbed1e002e26511da5794702828c7d8a0029. 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/NL8NY2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa9474d271293972bc0c158400c91176d39d2ef9972299d13c6efa01557ed7. 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/NLT2H2300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7fb4615032371aeaf1cad46a69608292dcc82bbf356c6a4e78c3d0555cfbba. 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/QZMEM2364198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5709c9b1e5bffb257547135bafcf09f060dd6a69f865a2fe53f3ce3aabbad17a. 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/SE5BU2520391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63677fc5b1321530792f4b802f28e8536f644a5fb9e43c99c0bf53b9ce5cf273. 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/QZZEC2459894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a31b9e818e6bf8c9ab4b8b0293dc98919d7d4875bf12c693b4991f2821ec7. 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/GBKQU2500549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a757e9ee0a3df972f56128502369ec6670fc083d496bd6b6f769973f3c5976. 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/SE6XW2427278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e72499fdad033ff5af76b3eeec1e0039827b992ac075a26821460f67b95efd6. 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/GX5MY2460579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d04f1eb600e16beb4611c2e2adb9b7e552222e0b5f286ad96dfdbbfe381f4ca. 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/SE6SA2492263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26237c5fdcd7572f87af26318750daeba2128e7d73dc352d3d30e984afb7773d. 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/GXF972405180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d87f107b4d92b952affcfdde30a9c249b8d8b67be9be476256fda7b729eb93. 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/BE8LH2400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8315865aa3c9c4dc9b116fe03d34d6cb7529a200ac4b09a1041801ee8af4bd20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2466585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63bed29472be2306ec95e1d19aa3a4b54aaaddc64c15d5dc6eb75824bcd8a3. 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/QZWDE2433893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800b4572416b9660f411b6442ffcc2857dca9ef8591c15e10f441b03fa4c3a53. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057b2eeaa410c13844bf8441a6891e0950b84a7528ee3135e73d6e623298e83. 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/QZWDD2484588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe95a91ce9d96d53cafd42d59661a1073bc33c245c02236a6c7d02573cb3d2. 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/GXF972411336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a7662f7df17583c9559eed2da6ee97621521f305638939eedb4f7d8e78465. 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/GX38U2453764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869462857618db119affc8e132bafe5ff3bcd66a9d3a4e618f50f7bc8a05d6b3. 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/NLT2H2400665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bcd8d8507da0ac88b4ee730e067195232153e2aefa38e28a11cb1bc82d9af9. 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/NLT2H2400753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5463c49900fb2efe85611d3489747d9dc4a7dcde26d8faaecdd9b7667cd5ec0e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2400607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbfad5345c64cee61be15e5446a774d83fc069a0c02526d1fc2e4bda83ff150. 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/GX8LD2479522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036db9d48df324b797f4b60f04211f2f6effa5697804cde0d3e232d253fefd5b. 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/GX8KD2476070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75001ffa0655e2341165021c747e9db6e7e182bf7ee54d7e7b114e63012e6b4f. 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/USLZJ2416535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f9cbba8bb77222bfb339643716a90cf7badb011c75179f62ab543f9b9865b4. 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/QZDA62421098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528b677a2fb96fbc4d2e72c8086c2e116d45ae732ec2e69e826edd95e537198. 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/QZWFS2311139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccfa826df7a4d606bf4dd75a2120138c6272603d687a60b35dda97be05e93b. 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/QZH5E2316435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f0c4099c36b50748a6ed5eb489769efffc32452129417920affba46ce6f8a. 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/QMFME2326328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2a03612f824122b9214c63bca83ce1433073fed888c4455c26ece06d1a088. 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/GX38U2357434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26b24732a89983391c58696dc054ff311ab9b283551ce31e92f376e33d05844. 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/GX8LE2385106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42866404ddf9ab14890c53f905d8dc3da6ce6b457cc22b68bba850ae63eaf1d. 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/GBKQU2332928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5888fc55beca14af534f5b8b37e695d7a2c742df0350fc79b148dc633043e29c. 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/QZMHK2332798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8ed29447cb3089afbe7b4dfdb174b9aa15a8e6ed7e73403c59521994feaeae. 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/GBKQU2232889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f38ff6065d2301f075875359e31829a2b54858c7ee78df71c88fa37bcce591b. 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/SE6I32129826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd158f1b8653f93b43fa7fef4d3b19784b6ff51d1959ec46aa6207843d5bbe41. 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/GX8LD2379256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8188ae858b320e9164ce813cb0d117743eafd073bf8576a21fdaff18575d330f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BCCNG2200439.
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 0x8a366216b94bc8e55a6004f94b409ad5948ebc05dd7348efcfc871e0153870c4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEXO42223266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99846a83a7b957d4be2c9e3e5e040afd8513f841dbc2c21640d45b5d90818758. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZMHL2218192.