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 0xc486d6a383a06712065faafda959ae77e0142301b691136d3331941920e9db5e. 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/bf49cba7-9849-41cd-96cf-8c1d83666ab0.json and https://artists.proofprofile.net/proofs/artist/bf49cba7-9849-41cd-96cf-8c1d83666ab0.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 0x435d843220fe917d8733cea5be765ab1221b8a5845c6194532591558d8e6ea24. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEB1960137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d6211c84956a697ca2395c02c046db0d67670644deb750ba2d85cb8f89cdce. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAEB1960151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264ac07855c8457a4fbd9978383d6398e144d367345558743a9dad13f66a83ae. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEB1960161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d76b3b396d7cb1bd357646428e63fce8e680268f3a00f34805676c9db62a01. 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/QZN882113210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9061fb8b94f0d7ac41be24640bd89daf92dd30ceaa3afc4f0ef9bf7ddd3bd54. 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/QZN882113213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb038bfe0d9b968984322ad5e9195c8221b4e24cc1ab69b740a6d9adc40ede9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZN882113216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f39c0657821e71475b356a84a14cbd8c12382f6a16d61a3295e81385f87311. 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/QZN882113217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e78656c03c7617fe5604cad4b61a6c98abcfdc73c4f699299735660ef9e3b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:37Z), 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/QZN882113218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5503a8c2503b5a8eae111a69fbd787777c3f7220ad00491db305d1293a7a3. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZN882113219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4478323bfd412a385703bf02768d4b356ade7067619ec8c94c56fa1b95c65a3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZN882113220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d0124ed4cee29b7f80cbb53765bf1fd13a40b0b5209b67dc4cfe58fb2a5b89. 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/QZN882536814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba27cbfa9cf0b62bc584949d188590eaaac946a80b3aa92fe227cfd02778c6ff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDW2554549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62c89a125a7f8db1dbb93f6e815ec625a8e51182e210fa7f2d682175663e9b6. 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/QZN882321654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00f1a988eaa815732382712d50daaa0cd0f61b826506dcb77117a0750424344. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWDW2554550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5990cf76aacea02793a938f548d6c81b7a888833b0c39f61e4e9e8cdf02a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDW2554551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96d8e2d44f27651eae4eff76c5cb94c8e627ec53c2382288f4e345c55cfba6. 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/QZWDW2211804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf25b39e616d85dfc6343c9d6c841b85c9879e811879df1ea7eac02900d3939. 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/QZWDW2554552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f5ee3dfe0eba5dd36ab5bd6a677fb4f46d6f31c80259a5953b3974c43642c. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:07:10Z), 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/QZZ662408813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd751efc92ce9fce0342f86e25016aebb82aa8751bcb2a9fccc002feded227f0e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWDW2554553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31b891125f25d80d26868713241b8f4becf9c115a9520f12c743a850303a81d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDW2554554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d0124ed4cee29b7f80cbb53765bf1fd13a40b0b5209b67dc4cfe58fb2a5b89. 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/QZN882536814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69112397eefd212d616b00aa9087d769735ee5094cb9aa3163023671d929725f. 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/QZWDW2554556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c4a8f4d91d67f8e32917c6b5623e5a76ca30bcbe0f70da624ff9d507c7a44f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:42Z), 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/QZWDW2554557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd947f3979e336067f9ce3580b3954010ca720acc24861d9940edf0401a654998. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWDW2554558.