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 0x2ec946eb2afddf144215f79e5d83704bdb302c2a4ff1b681b8ccff90950408d1. 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/10f8a772-441a-4340-82cc-a6186c0500a4.json and https://artists.proofprofile.net/proofs/artist/10f8a772-441a-4340-82cc-a6186c0500a4.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 0x5569b7b05dab864185e578f4cb7f8d22804a6374a4ef3db4a2725a5682e24de6. 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/TCJPP2162588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2623f1eb92a173f0815e1fc4fabec6831a2e14d0559f2ef3778d281cca1fb047. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:39:31Z), 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/JPV502200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54477ee0e3cc1a53a1b374b7e394a03174abad0ce8264c1b42a892c865081c07. 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/JPV502200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7372039b61948239cabaa5c640b5b9a0916479a02412a7b5257c12c202fcbcd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:35Z), 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/JPV502300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1aaec2afcdd6ca03b008d24abbd16f7fa248337df08d385d9632093ec73c4d. 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/JPV502300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c5e4232af17c401b6eaade6f47a60e51b78c9c105fb819bcac25d326095772. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/TCJPA2442359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209fd8cf861dff7d79e1c0434de4aeba7f8d7287634f272ab41d20bd494b9e2c. 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/TCJPA2477069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c2f7ad92d40ae98803b91d1f905a08a05c2b7f6151b555a67a16c55cc95a82. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPD2540466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f31bdb22a8925f37fdc07a2669657f20a8fb24b41788f59c9e12ee9feef67a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPD2566568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17b9cb1dc38312ba17626ddf2649dfcf787cec2d6f915ee497d2414c4881a9. 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/TCJPD2575577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5706f7f0e44ae9fbefa50572faddef466382257c7222c94f67353e8d9d4cf42. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPD2580345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ff1c4f71fe7fa307845ec5059b251ec18f5342e0de6e1a677113f05249081e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPE2504554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4326529e3ea52eaefbc750e3bb57a104864fa723471152cb3969229aa27ed38. 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/TCJPF2574677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632d088896acdb8a047f4101a231b72b6ac9f87e1260b8e3736b1db02207da95. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPG2566586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69cba7d6db4e4675ac575a64dcfee1e2864488aba37e72ba3b021da6590b1e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:08Z), 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/TCJPH2547902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff7de374978ae6c69f359c3b9008e44c5866da846f86a238cbcc9abc2a1952. 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/TCJPL2503924.