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 0x793511aac4305a161fa2e1a47f01ec8b1c92549a9eb9c891cee04e6295e9a4b4. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c58c012d-6b8c-44b3-95b8-f66729b2e129.json and https://artists.proofprofile.net/proofs/artist/c58c012d-6b8c-44b3-95b8-f66729b2e129.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 0x2fb9d1a37ce0b952456a52bbb8798ee5efe55243a5a0723aa0d1b5554eead3a2. 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/QZTB72354401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6dae768ed578186cffba945470c81feb20a7201c8216a50b6114164a1aa1cf. 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/ES75E2403254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef12298a52f54e1754663e0fbfda0b04a8b4c26b2aba090c40cbdebdc73f4b1. 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/ES75E2306118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a959c016ff40104189e14531f56b1b52e44592f7f427dcd7bd01723d94957b. 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/ES75E2301932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f63dc2295ba5ac2ade6e1745c1d3457e609fc40012a6ca26cc29d8c53715bd9. 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/ES71G2317736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37118fee8a0b242ce8d7399851139eea642e654e99954299091f85ccbccc4e3f. 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/ESA092306444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf342de50f4817ba9f89323236a1df58615f2622a17f4c50f58d02ad3f925b593. 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/QZDA62343354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5ed6f7846c5ad15e469275d09ecbaca01b899c559663ff444627afde10f89c. 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/QZDA62343355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1492dcb1779b71d741b8fa88ac79c5379fbbd4fcd19c8afab44883a8e9d556c. 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/ESA092206373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d56e289818c77711e857ca1f147dac5de45c6bb875a6cdfc86e6c9d1900f5c. 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/QZK6P2248812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63293d8739f08bf6030846068d5b96cab6639094b56651a99e6bec9e55468d. 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/QZK6P2248818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54392c0efcf96ff973734302f9b4b8285f6818fc4f70cfa832fbee60eb35732. 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/QZK6P2248819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff40bf6d441aa654c677dd26329a9b71db7176a790e27fabc8bc23587a8563. 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/QZK6P2248821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1489af50614ef6bbc9ad6067be3bb001f0e206a11b3458d23fa55430364af6. 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/QZK6P2248826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e6ce1033e40e3f9fb64f2ca36281823897587f3dacf4b862c651a8bbaeeb33. 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/QZK6P2248827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd443b81fcf36a46210e7bc5ce6a212023b2ca43cda00dfbf25526fed373a80. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZK6P2248828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2832c37f7918db4eb7c32fcea89a7a97ca3ceeacb0b55bad77284b296a3088. 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/ES75E2300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac4a18b0a4415d8e4cb6a9f2bd026c5380755fb4e8e0988f765504b944ade21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES75E2300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b00f73d3bbe23f58f865eee5baee17ae712fffb827a6c77051786dc8918a50. 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/ES75E2204660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda03d4226875fafdd61795eeb6674d3bad3be8cb17da619c740ed12cb57e66b1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES75E2206722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa786c2961a0b6ae31858f1294e8f35de55d2e4bb5721d0e0e2613251f011cd7a. 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/ES75E2300834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c1f1c960d155ce66fc11fc8e2832051fc47d2ec2d5ca5da866e2f804cbd3e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES75E2300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b1a598253b3e223582f7712219861e2dfc2c4090976f6010acda0f4a72b847. 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/QT3EY2424825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7bdd184c27488868d7e9cda6148b47a37843f9b3ec825bf496e56e1d0a643. 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/QT3EY2424826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bea3648f616275b760451649939832f052b7e2fff5dd9ce0431e0c2cdaa2d3. 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/QZWFG2463003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc761a27ab69027ac378927dd2cd9f61e993a7c36e081774a7b2b64441131cad4. 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/QT3EY2424828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e69b31eab4ed8272ab3c4df1034ac882dcd2e35686e3026813cef0a5078c188. 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/QT3EY2424829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c407c40c570e8d612690eef19beb1a397984fbca7832874968d15c1193b413. 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/QT3EY2424830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553bae18603b8ba15f7f2b6bb403feabf4ccd30acf00f118c246a16e5a5a851. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZZ7L2434296.