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 0x212c82462208ab5e51b3fee61bf4800c4d819b0bd18d0e2bfb015df0bb984027. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85d389fe-07fe-4cd7-8ea6-5596e78e8a4e.json and https://artists.proofprofile.net/proofs/artist/85d389fe-07fe-4cd7-8ea6-5596e78e8a4e.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 0x5b2c7bb5fdb10073c8eb653fa19e980094ba53fe8fbef9f5a8925db1d7d1bee7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3018030c2a645791903c10c8029ba417b977660896d01e370f1bcc5d0e3e1c. 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/CH8951700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffc34ba7385b14def38c17e272cb2af7f6252d6351a3a9b89bf385c4ea843db. 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/CH8951300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f85e60cee1d28f85dfc7f36a9ad48d640f80ccd0be76349e38d97bc9d49a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH8951300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2efed0d7ba437d2bb068a72019241d60e9ceccf3c7979fcf4c84147106bdc6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05432cafc858284b12561b317f7989bc1fcb98262d1c7931ca2e8069dad58c7e. 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/CH8951100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf328a44cf769dd39bb605cfcb370ec3e4427ef73789356ed864d077bf9fc6e9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:37:21Z), 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/CH8951100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd56f454d2d034a7116ca30890279b7e1f5eb63a8b607080da35ae665d9276f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862bec185b7039f9ae82c8b0d70b1ecd577843a90354396b8613eca91531fd2e. 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/CH8951100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de07715b4db31adfc77f8127ee9659f9ffa5f6ee9cdaba0fd4a672b3ff874db. 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/CH8951100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff2dbbe61cd95908529f4c4dd682455a6e29dc7901cd2ba862a900c194593af. 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/CH8951100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419a0c0a9d47e1ea09a6481d41f8a9750751d1e1a16bdd7abd32ef51bb283216. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc36411340cbf9f68f026e85353d0c217dcacd1cf5a2f141bbbe7f138ff16dcd. 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/CH8951100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f6d6c21d039ce5fda97b645282f7e39a9e9765eba06a835a042245ed1cf35. 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/CH8951900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b60248430f7658c9ea9d6daccf198da58460a6c232e984b270cbb7dc71ad22d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2c7bb5fdb10073c8eb653fa19e980094ba53fe8fbef9f5a8925db1d7d1bee7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH8951900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec05d21d5b8910dc73a4d11088a2e61ef9c0ac9394aa6327fcec9614fece25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff94cdd871d6a9f913a7b94b6cea22de1a4fd72e28d200d730f6bed632dfb9db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH8951700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226e449295d9eab888f9238430c44d7e2be5dc930ed61a3baa4235ee4d05495. 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/DEOV41400993.