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 0x1e4a9e3bc4c29fc84cbfa2aa3f049a72b11a74c9fca564247cc0d0c9cf97c06f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bff1802c-6804-43f3-85d3-aa3db2baf800.json and https://artists.proofprofile.net/proofs/artist/bff1802c-6804-43f3-85d3-aa3db2baf800.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 0x17c0eb40d4ff6215dbf1d2f001a43586a67ab2d1cffeaf1051081e40339e11ba. 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/QZK6H2586428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f43c6232c09ede9e976b9654bd85a29fc7dd6623b31cc99454345b978fc078. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6H2586429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b61051798c79d1cc9791997fa4434dc6c30d0e08ad816a5b1aba17d00c551f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZK6H2586430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6791874b268b951df6296f369d908e2a52e40ad2a31259cb9a20bfa40fb186a9. 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/QZK6H2586431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ef35ecbe71085608e5b2749831ee5643fa4271655452e7198bae7081476f8. 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/QZK6H2586432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a3d2ccb956cafd268bb575c2f4d1ed4a8276a71873f0a2add835f12d60ebfc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6H2586433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e6dc8629e29f11fa6364a7b2a96a85b7ff5685662e847f1c7cdfae6c93d043. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6H2586434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893a6d974fd441c98be8bf041b51b86401d2ec979c91a9413a5d6ca00bc7062. 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/QZK6H2586435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db79b27765fcd47397a884e8ed7596211b60a356d812f437e6526c63a6e13ae. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6J2579109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced144bdd94bb15760eda5c62ab1c57d94e6cb42f8b58a788a560ffb0faa744. 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/QZMEM2518595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20539bcaa2cc11cbceaedc4b514e5a01225f6c80ea240e1bbad76d6797bf9520. 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/QZMEM2518596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354448916b3e3827e76b7cad0e5c4fc90982fb5b6656f20c626a6224fd7ec3d7. 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/QZMEM2518597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de6ac0e0b1a6e6bf47c3f2ef6e55698d2c21360f1bed1b12646705ebcb6402b. 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/QZMEM2518598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b1fb5961355b09b29323f8f60126ca6bff88544b4f21b9d2de53aa8dbd164d. 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/QZMEM2518599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb4996fb5aeb5cf7cdddea483ff6fc41400f012a9973780d3ff77740799054. 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/QZMEM2518600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b5d1e1279bab8ff49856875ed7c52ba1504d15aaa5097b8a4ef08417fa3659. 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/QZMEM2518601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63c1b90271d8449f0c66f06b3dd4ef111ba0836c1054906996643a33c9b2ffa. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZMEM2518602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a71f1de03027126d64752dd5b0ad015cf7fa36ceb46192f4f637bf123813e8f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEM2518603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43932f7eda1f4350e447ceb15257223b29b32dcc4e66d099e9ba5889c4c4feb. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZMEM2518604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b84a516b37e6194346de1f68eaef881aafeefa6d77847cb6cf2d4e9dd9ee8e. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/QZMEN2583392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33519f917005bc2e57da4c9b0fafd1ee2b68fa370a36adbad266d046645b8892. 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/QZMEN2583395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc8c6cfdaacc0b97dac9f816b7b050d1df2e0193076d8e6a8ce9ba830caf5a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZMEN2583396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a3f35eeea025b670432926f91a602da7559f415beb2e7b216d5113daa2313. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:40:39Z), 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/QZMEN2583397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dac66e1423821dfb80ce3d2781ad6e2a9d96784a46bb7b1cbaffc4f84576be. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEN2583398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56be2bcc3f2c19530db89738eba137d200318d849c527d8748fdfdb871d15163. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMEN2583400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004847af52a514c4776cbfd1ed16e6cf4a93b94dd81e15c6da64550a01706e54. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:18:33Z), 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/QZMEN2583401.