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 0x1541b0c796bbcb5c9cfe889ea02358f7bdfcd5e9e7b57fcdd53563098f309704. 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/255004ba-4c42-4821-8583-9fa010d96ad3.json and https://artists.proofprofile.net/proofs/artist/255004ba-4c42-4821-8583-9fa010d96ad3.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 0x031dc1adcc829bc085a87e1aa615dd8c6398d382a7ed79caccc9acf545ae54a7. 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/AUMEV2492837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb239bff43a75743994803c5abecb4fe4746847bcc0bedef0a1791379ba620dd. 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/GBZND2450001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a2117d6520fbac66c32529b10e69fbc4a1d77bdc9e7d307a3e437d0b0129cf. 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/AUGBT2310635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641fc4e7a799c601b25006d68c39c57bc9f7a464df7bb0b6c0cdf353086230fa. 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/GBZND2350005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2225b5d29794ecd42fb3033b83c9777842d77e91ceeeaa57802a7ddf0b1787b3. 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/GBZND2350003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cff8347e3e9a94d1c63618bfb5a0c5a7284604a1e6723ad4a607a7fd61d3d21. 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/GBZND2350004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30847e51628c83949e70b9cd7ebdf93c11fd04bb393911f694ced81670c452a0. 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/GBZND2350001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa100a579fe2031658eee68ad39f4cecf5f88a7bfdddcdbefe59a7bb593ab747e. 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/AUMEV2339688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42810c81d44eea41469e450a9d53de5058e05243af7fc77fd72d687d0616de23. 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/GBZND2250006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e9d6dc65442cfaf2f64f09ba1d352a3846a998a8966925a07b5b160c795bc. 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/GBZND2250007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ececce749302d09dccbd3d89672c6ae14975a32e2f1ca62490d23b3e02b86. 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/GBZND2250005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de3bea1a87e5bb114d6c774ec0135db36047d9ca3c3c46694c3f3eea17efa60. 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/GBZND2250004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa030713a2f46dfb5a263b9d260afabf1c2e1ffdea80aa4238c773296f99195ab. 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/GBZND2250002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefab814698a0675219c3fee78ac0715b4525fa027d222acab937d206b1e8539. 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/GBZND2250001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c82fa40b10372fbed9a0b1964d29429bf5316b706c5ecab0f33643dc8264ab. 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/GBZND2150012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b75135b7cd280f6acac183a828b6a81072096db95c0d86b5693414f7fa6adf. 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/GBZND2150010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d1c66c5de6ecebb4d280b132f86a52794ecb91fd8ca541f610bade0cecdb50. 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/GBZND2150009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e86f1ec4fcb83e905369c4ef9388668fc7a90b6bd9c780ec79c1b2b5ec160. 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/GBZND2150006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ef189d5cf1cf15024d4bbd89c40331d8de61c7614705a5cfd748ce8e80b63b. 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/GBZND2150007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b344f2df5f48c08634e2dcc015a1bd69de733e2f4c282281b5f96667463d5. 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/GBZND2150005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6328a37d02cafade90af54cfaac63b3c3e0146f7f00529080e969da3705bca74. 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/GBZND2150003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c4866eba3352b78bc142d26523a0998f17d29c347fa828cdec261f1b6098cd. 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/GBZND2150004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb224fb8ce4805af1d582111e4a822f7bef8a5763e22c9336aafc20da2221b140. 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/GBZND2150002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14742d5786a3c16c29f60dcca26b5d9a42353500a81a0b2ba10b7f69b68ba6a. 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/GBZND2150001.