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 0x8abdb3b7a900dcd1948a482a6f89d4e57328e770428f9be50c804f9c315a4cae. 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/3c6075e6-878f-47ce-8d98-d42adaff3ffc.json and https://artists.proofprofile.net/proofs/artist/3c6075e6-878f-47ce-8d98-d42adaff3ffc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piggy: The Lost Book (Official Soundtrack, Chapters 1-3)
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 0x08b2bfc92d4e1fdd5d001d2bb9ace3d7d8584287eeeab2a2823d8128bb2cc138. 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/QZHNB2131887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adfa1995547941768a49ce3cf4c9ace9252e1e786a9422805151546f6ebe05b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNB2131888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e5356eaec65a314973c7c261d5523e175c3ea2ca5002b7e88de0763dc3aed. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZDA72509266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0101c142418121235da5b71563463b5fe3ffb9ea9f5d17a9e16fc2492ac4d0. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZDA72509267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694c60569e473846db2f1e7c08c21e46c1ad9b7af612e9cc6c7f4c99e127672. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:38Z), 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/QZDA72509276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec8bdec4277d4cb1bb848cc6fb185ac5de0a22577668b07f3408e50ddd3c11. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZTB52551038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bc0a5f5b01e692ed6638f52cc8e93949516dc5b9bf46ab430f423de2eebc5d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB52551039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29abb392a6c13e292d8eeb28ea1345bf1051cde502897a27fb614259ff80563e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:52:29Z), 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/QZTB52551043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77fd2e969e7a4123dcdf946f3cfdb39d08b2c05e2d27036ca77795fd7a9f618. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB52551044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e90548a1368993540bec91171e08a7fcbaf289f75c9597ace6a298a868b893. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB52551048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9d3756f5eba007fd512e74e810d231207a0762f8614439acbac3cbdd0ea95. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:26Z), 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/QZTB52551052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5d44219254ff7e54d89f0a5fa35fa1e0e1724ec35b048604679f84fb6fbb9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:35Z), 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/QZTB52551053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57af53f79ee670e5fd1fb75a16a5d247abcf7569eea031462ff96472b00f654b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52551055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1c84e9a8e6ff93c4c6e75ed3bc8b059c345ce003a993ef3d23d5129ffb3a9c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB52551056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3ef8bedf44b6e29c0f4439f7300a2b4c07ee5e941520366b933f9fd34c5533. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB52551057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f46eda9150723f68c1900ad1a1ed3775f3c62dff8c759996de9e70605c02e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB52551059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ad8f79064bcabb6339982fc8d1923ba6b058ae32366f4078da65e9632c9fcf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB52551060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6edd27a37014a97dca5496bfba651e728c2e08dee03057800774ecde5fcda4. 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/QZTB52551062.