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 0x774783f7898cfee637efb1b41d55ad47cdc4dc956c03ba20c98ec117cba56e2d. 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/2f52cbe3-f523-41a1-8225-041c42ed7e2d.json and https://artists.proofprofile.net/proofs/artist/2f52cbe3-f523-41a1-8225-041c42ed7e2d.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 0xf2c11047b78d9016790801ffd0e89b589b53550448c71f511018e39e59402160. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZGLM2312634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad8bc27318722d8fec0722b5797cfa9c97ee352f1ee673db0eeb6d1b9671e97. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJV2338247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e9eb05e5a85f232979a0683975c3c4f7ffbb1d49c73044c5bd00b82914c91e. 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/QZW9M2368675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c4112136a462d233858d3244ba0a3b96e4c452fb026385e5b673e373b785c. 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/QZNJX2442333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cdcbfe1e7ded44bc9cd3779e091f47914138375301e11f8ccb6ffd4bde4314. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9L2407061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971239bf4134be46948fffed4769d56f77e69823543741102b0090a3874a55a2. 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/QZW9L2407062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2983e5bb995ebe640d278b7857a370e657515f0a44d191ca91e2bffa47e7598. 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/QZW9L2407063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3220507cdbdfefdcef951832c68692c67538d48ee4f7ea6218a63970ebd2fa95. 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/QZW9L2407064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21edcb00ee8444eb9dc58bde2d0384199e3d6e6cc72f2f8498da61ca404432f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:42Z), 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/QZW9L2407065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea694c0533216ac8a4ac0380f4c63307795ef4e345210d663e51a8f77c545624. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZW9L2407066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662b5eccd1c9f8c887e1d3262b7596108dbc167bd8d2a88d7f7da210fc38d983. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US7VG2543084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9103a7988857f35fe62327b39c7fab41426f89e65cec091c3473df5c457e8c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMZ92591332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0334ef731c94d00e6e87da2e026adf1e6cf07a750dea64cc01148f84190506c. 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/QZNJY2505358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda54ff3257ddbb12787a2e00bb2d215a89594b596359a725e6f162e58f711e9f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:25Z), 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/QZNJY2595771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44c979bdfe99158f01b0595cf488a8affb50356056bbd51589ba1556f945991. 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/QZTPX2521263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27630047f953a6014f996752ac0c3db89c6747648b666e90f5568708b7d4c22d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTPX2521265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7a115916327190a0cfd3fa77e9bbae4c4c40c150da1ae53201328a0e0fc201. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTPX2521266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d448a754e9cb5eff5ac4b4fab19a99175d28eb419c28c6f2c2bf49dcfaed94. 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/QZTPX2521267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ce40eb37bb1d0ed809c1793ba64e41e1cf45b3f19b684e3cad403effac9f3a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTVM2500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39d1abe14c39fea7575e931a9132eadc371b62627aecdf4018c0b524a329ab. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTVM2500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244316d711865a96c1494fd79d6f6bb4c0497c5592f27e8510291ad7f675657b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTVM2500497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223e2112f0ee4acbf52cf9e2cde2e71052dae874c303c05337ac40c3356e50a. 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/QZTVM2500498.