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 0x36451fb9de4683a6e49bde097e619655ecb0924b532cbd3351d95e66eb022ae0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/362b0e5f-08e6-497c-827e-d3680ed522b6.json and https://artists.proofprofile.net/proofs/artist/362b0e5f-08e6-497c-827e-d3680ed522b6.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 0x2b30e52feea41415e92396ec1bd0c32784b2e8ac3837ed129bbffdbd674ad785. 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/ES71G2237954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82248630505796ea95cd6556450d002d35b2b2836e30ee10ec8bfb2ff6787e9e. 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/QZFZ22307748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3fc98aa34b54867c9679b60ac2031a13ca7556dd258322ef71897dd7ae31be. 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/USLD91745789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58df8d21d68f1d911b7b2f5d66069df1abc98de743ad90e740a52a1a86bab8c9. 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/QZWFS2308715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c9d36a62323f3291e5abbf73977c75c84e001949a3fb346a780c248311aa6. 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/QMFME2392944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2431b50436985c1a726dc5e6eb57839dac2076fce6c554f899006e217f59cbf. 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/QMFME2392945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d8cc391fb14022d7e81f36f8f2beca3601e0926f6521d3097bfbbef7ccf98. 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/QMFME2392946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ad2628557365b49b7dafc3e779595540e9bead18f9ffb532c9c3f104b3023. 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/QMFME2392947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97383ccde689f12c5df9d35ba6eef2bafbb862b468efb01e0c24131c4a7afe8. 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/QMFME2392948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c79dedc2192fc93f3e3a63e6604a40a5034d1968d77728c37312eca159e80. 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/QMFME2392949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c2131f47ec1df98d74019197d635cb854ca512755c98660d8bc7a7b51f1c30. 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/QMFME2392950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b29779f5265653dfed4b600b5669546315b5ba25b7946b066bac1a882f64fb4. 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/QMFME2392951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd63e2382e0eb2f8e7a63ccb9d4ab7dacf561fe55dadcb3869aaee3e595732. 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/QMFME2392952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f97eef217d1d2649816f796606e9c2369cfc791347cb20a6bec2f772f85efe. 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/QMFME2392953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89d5cf1ab448fe9108b032db176449e97802c2f0c0ea1fc1628d566624c81d. 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/QMFME2392956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402220308516014bd645d19bfd02ffd5ccaaf81c94a09535dbd47eedaac80fe8. 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/QMFME2392957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fef64c8c398e8c4114b16144ba0f258820e422c9c28e4609a0da078aab1e55. 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/QMFME2392958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a27dbfe31e139fdb63c6c34e438c412ddef95b470278d46143f6abbef3afe. 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/QMFME2375150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30336cd19bde38affee90c13becf651f81f1485004bc87ba97128988783d8171. 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/ES71G2316750.