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 0x9db95fdef413809829dbf6b1f94b78210d7090640f8f42499b36507148d6ee5f. 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/8f444237-d4e4-43f4-bf12-b56cccf8c724.json and https://artists.proofprofile.net/proofs/artist/8f444237-d4e4-43f4-bf12-b56cccf8c724.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 0xcf69862210d6e830bce706e2dd53b76d7ada5b4895da674f6480baa68297e563. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FRX871533527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b625a4188ff5f23d6d10281aeaf22084355a39c11b47e34b811f150e128d2c3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX871533195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a69d04c189ed7289c9eff77902f2d7936b3b401538d718afdeef3c1047018fe. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRX871533533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b9b086b18e3ffc10c12971bb76136c2952e2a20d4d2f127939cf4246973f8a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX871533537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5a9879e8f505a20557f64b92d0f16dfc85c0e89338a9b6633ea3e422116d43. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:28:41Z), 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/FRX871533539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4297593b6889e7142b50fded72f3d1db50fc15d3405104eb0d6091a237eef2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DELJ81603710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80545128101b455a677e274a9e47310a46b7782e91762da593a0a15b3c900a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELJ81614767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c76d1f94e4699b90a01ecbdc45490a26573f1069b22b809927eeb2102bc3d2d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DELJ81617434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dbef612750ce6bbfaa545d31e957ebe7bb38a5b821f1cfefb19ac7d3ed061a. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DEVY81700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77229751f239e5d4b7faac7540cb34a8d1f6b0ebcdf7dc57903527f55cffa6d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEVY81700230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96aa3daff2eada34215f0e755531f8db90124d05e2146ad27a238cad8ceeff5. 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/DEVY81700650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddfc2e71673928925f817971d20d5cd6a51ebf92cabf5736ebbd6f92bc4659e. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DEVY81900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e73579eefca27e09e2eb81b4392794ab453fb83a820dd565f2ed432856b86. 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/DEVY82000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5598d0ca5726c9fe940f219deb3ae6efa84c677dcc32230be0ad7e84c6d11. 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/DEVY82000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca44e17bad28510466e148dc770d80cec9e8f616f7254a5a08e415d5a746683. 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/DEVY82000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc62372332ece0891c9fb80ecc91906f56ea7c26f8ec5a55d79b09709733d545. 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/DEVY82000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45595523e0249e74a37088c807b3d6c899e83e9b559e294b69cbc224cb7e2502. 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/DEVY82000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c883a96cbd05fd0bae3fa9e3bd94c33c2995c1323895eaeca248062c66e3e. 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/DEVY82000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e73579eefca27e09e2eb81b4392794ab453fb83a820dd565f2ed432856b86. 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/DEVY82000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a338a0ee46d5ef7718ad3cdff14bebe931d5348e40d1676c9eef804d5d506f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:05Z), 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/DEVY82400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b85f7ae845359c90ea83f03edd8d97cc294d31b63d6826f7d5918c8feb09c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEVY82400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115e43f0afc6a9c51f76b08fbc10c792272db01f795d77763ba209cfe13acc05. 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/DEVY82400367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2014b062c29671c469cf858ac3037c14c233248f4614ccf770421281d58f7bd0. 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/DEBN22000011.