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 0xc5aa1fc287db1eff449e70aae50c04f7548c60bfba4348bd7b210900fc4de3ce. 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/713539b1-2068-4108-9a98-7600173a3d65.json and https://artists.proofprofile.net/proofs/artist/713539b1-2068-4108-9a98-7600173a3d65.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 0xcda3ce0a10bcf8e778f362a6e04c277e20d280392711c71dff96c0b0b42d7661. 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/BRUM72301352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c910662d2beedc3f02f4f48d0c53a7fe9922eefd2410f8cd29d35eafd5e74a3. 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/GBWUL2226708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac7226f4792e93f48e9e39dd5e5c521be93d154251916931fec7d5b374c7fa0. 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/QZZEB2420514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ffc28147f71839fca61a3ada600152774b26df4f1db95f280b5fbef7a2e15. 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/QZZEB2420518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710f0fc961373e09c02272a476b5a79139014c1241a01bc3202b54838482dc9. 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/QZZEB2420521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068ef0769f075aa1f5b26978a466565a40523f435ec0a4534d14bd5b03f332d0. 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/QZZEB2420559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2dc948280d59a7bd77cf96c051f886d1f643e8a064784a28f20c865cbdfe81. 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/QZZEB2420523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5113a89b7f8235573b75e16cdc6dbbc5d933d4f43b54b066ea500d8e42d36f7. 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/QZZEB2420524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abc0772d068035bf27b511b20e94f792771c14255cc71aa39a233449ded4d4c. 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/QZZEB2420556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595e16d2bebe9940dd1ffa6aa27b46a70bc29fe52abf146c10d9b61b2de2d3a. 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/QZZEB2420526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d82c2e683401a2642d71528ace6e42ed68ae9134a4b14f9a42263d164b6c39. 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/QZZEB2420528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5fc9eef430ca4eddbb9787fbca9734a8a51abebc671fe8dc502cca7e1e01a5. 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/QZZEB2420529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b3439e0e7b64174bd303eaf6998dfc8b7882904684d8a3f837a6538c284ea. 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/QZZEB2445211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb8ea53f7d85197b2cbfc99acd8729e9397d633ab934c6d4452e1f22cb0100e. 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/QZZEB2420534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeacbbc2fe1d74a2abac2e0dad585a178779562d8e6dd2e69eca2e063d12c889. 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/QZZEB2420561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0ebc81494e9b8c810267c393c88041706630fa855f21617b8b6fcb9942ad55. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:45Z), 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/QZZEB2420533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20c7de0b411206b6b4084638d50dc12847e808b1cec27f87a6306a0574f2d9. 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/QZWDD2287255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3ce0a10bcf8e778f362a6e04c277e20d280392711c71dff96c0b0b42d7661. 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/BRUM72301352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7eaf5c928a3094f8842094f83f4be8ac140ccb98cbf7c02422794f9bf3727. 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/QZWDD2287341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9598761f84703daba8f21fca8c56358f05b8b8554e70c4ef6e746414d8648895. 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/NL8RL2459789.