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 0xa5d61c08b329a1368bf90ea7127ddd1d2c3a80ab22440488cd1ed84abcdbd379. 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/d4767b54-730f-478b-8b6e-48954dee5250.json and https://artists.proofprofile.net/proofs/artist/d4767b54-730f-478b-8b6e-48954dee5250.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 0x815de65e58a9ca73740c9a50a7f90b3eb7e45ac2b24e59384201eefb841e6eef. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZTAZ2237444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a3b97225c70335bdab116eefc41e3f279501036f72d06bfc9479181946f00f. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZTB22203252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abe436a8e81742ddeaae0ba5f30810e08ba375db3fe3617cd44717539685aa8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB22250893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f4e912d19b98eccadf4824255e7a23dfe4f163e90a3f3da7885b99fc70ed84. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB62259702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bc7e1a7f46b3244127c2417516088a09aa859f6ba7e9daedf179284c282b31. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFZ22355255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbeb4d54df7a4c1e06cb328042ecc282b92b2cbbd7397d25b56225a05db91aa. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZDA72366441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a843f7f8d1829a6e6981ef21f4256b50e5b9133b79f6e4cbcc8e3822749cb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZHN82324084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4214400a42a80059d1482c342b5bb64cec0844f0d5a9f02d0a27fc4f29ecd9c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:43:01Z), 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/QZK6N2379398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac51b8d83a8624d9218463db65bba48a1ed49919a5c9d2172ae83be58eaef96. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:32Z), 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/QZNWS2314330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab9c6f0736148ba793c3f2b01e8110e22580c6b617a03a2a91f79dd09f368e6. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZNWY2307875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea11cc1d1e5e518baf3d646098009a4684c7c788c682be88730d99e3033a3784. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB32345908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc81477a9790367e0c2f37cd01dda38d72d4bd0dfd3110cbbc706c2351299b5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:51Z), 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/QZWFF2372058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2533bfc2ff6cad59c96b5b73e5ab01f529fa4c5ed34fb66f86b76b44dd54fed9. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZWFR2366199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b6511b2ee70c7169dea3702855b278eff3797106af5765e69c26d36aee1bdb. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZES52428257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3eff415e85f3bc6d345f43016835442014cae10a860d0c7ec7f1aa68413559. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZMEN2439094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a137204e47e080acdb85126eb908ef9628d2c67bf003abc1b30420574d7ad91. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBC2416833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20169cd5259f3439808e850c972033abd341bd6d407fcc9ae9b32e16070f7f61. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFN2416896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb641d986201f7ec0dedca696b7a0360a8b39ce2b19b7de2fa02d735c260fc422. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZZ7R2416962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033ea691f3ccf33c99b02a95d1eb6b9ee778da027feaa32f0f532ed296c0e2a9. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZFZ32517167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e3ca39734ccd5e96652585ebfd795e600841f85943f2ca37cf88f813458f3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:10Z), 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/QZDA62512563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78abc534c50ec83f21fc21935610dcee1c0d5ae22bb9f3196763311c626125e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZES82531697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0185699bad383c1499104b1e21b780edb9f6883cce683ede6451cd9bebe81. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN32550359.