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 0x5f6c2244f00e2b04bf940f1a39409876889e285ad3fb30171c7585b6488f5026. 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/bd476756-2e31-498b-8156-aa9486015b86.json and https://artists.proofprofile.net/proofs/artist/bd476756-2e31-498b-8156-aa9486015b86.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 0xafefc8ae5d06528aa27ea0364ed4418a998dbd17d9f0f3b7194b4edd6a7d725e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USHM92445416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffdffcadd255ca00e25dcc9e50d926e79d19d36dc41c46f5cdd4a3e0e0c7c3b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM92445417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1bb26ce98b7add07e7d72b8f1c395c042b69af35b01cae4c0861bf2525983. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:03:00Z), 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/USHM92445499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee48e3bf3de96405e211a7b83cec8ed3e2550d9ea5fa9fb8937c376cfff34737. 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/USHM92445500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1093f02bc0fcb47f5e5aafb52a59628308eb949453b46fa3b31b9a619ce2088c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:47:46Z), 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/USHM92445501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a25f1742bd1df376a7dd20c07745fa83f07372c2d06df0560d0cba6ce9059b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USHM92445426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d09f2af847c14e785ec3a7a12e58d0b2da8690af560c667faa81bd17e4ec152. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM92445429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa282257ccce169a127e7cff0d4618d062344fbc9a692ab73a52b77d5fcc1e1b2. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:00:49Z), 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/USHM92445430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d3331568d04b627499d454dac2302cf8a476c145dc59d61f80fe329cd82c80. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM92445474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11e093c64951d0dd3d806b00b13b346cea531fcde0d82f5f6cc91a17fb45994. 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/USHM92445482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e99221cbd4c27c2ac2718bcf2227ac55661cb34539f5595c6d2b719112aea3d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM92445479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5adb7ba328d9d67310a2d72c6004d003bc750495e1edd9ac23b73eb59b35ad. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USHM92445478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6dd1833cac8b341d475effbe89ba240a07113e04130f3896c3ffb1cb56defb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:02:06Z), 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/USHM92445483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c273906c4a96d7939777c31dc4ae27e50c8c4ffa4e38cb0e38e11862897b5. 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/USHM92445481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f38eb60ccdf6fca70e43a641de3eae750505beaf3d1ceeb60a206f632e7bf90. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3TB2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ace3c590e1909fac0f7484b45750c18a0a86e1c84c52f79ce4a9412d06425c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3TB2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a25026fd8cc28e06f0132bca7d34c01cf149cd24ba97dcc4152b82fcb3002ed. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT3TB2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d07633d9d45fe3bb6551cc881464abd6f06ac8ff931abdbe49efc109bc099. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3TB2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dde15acb7ca7e253c3012ed50eac923d07be323afdc0303d17c378a58b8f9aa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3TB2400137.