1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x21115601accda629d2db0b2d6faba33c6f1723357975f2927f7d2d956247847e. 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/171d0da4-c70a-4dbd-b064-f1c34af62f36.json and https://artists.proofprofile.net/proofs/artist/171d0da4-c70a-4dbd-b064-f1c34af62f36.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 → block OTSBitcoinBlock must exist at that height 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 0xc3be72e26d5960ea8c0f7d08850cc000a26e8e76cc551a3a38a4864f1c327157. 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/GBGCA1401127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce54e9b12aa0c91c4fd3a7d1f0c26f70b0e093a68bee8757678278d8858ed651. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:29Z), 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/GBPP41500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddfe0704099686782b4a85a96515d23a68d05a17e905f5e912039d81c418413. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBPP41700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d56d905b6be442f1db001aafb56ee298f2caeb639ea8262f912a0e7d108a5. 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/GBPP41700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d3c74b47e30d0eb58ecc737eef054a9a86d9879c69860fc1e01fc878130106. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DEH182019504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a19ee6606ee2089c62eeda00422d433d712c7e67505fefbfa631cac09b7fda. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEH182019505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a36887a55bc68b90be947fab481d4fb1834ae417239d5c4216d99e12782434. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEH181918501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc952924386638f906f9467ba659a3e53119d69374a6e16c4d6980a46075dd51c. 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/GBPP42200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc4cf5ed5921f55cc39099156542aa7386664e42ab6b305f7e3530406096da. 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/GBPP42200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1a702c0e1081eb8e07340f2a9801b1d73f974f37d3ff7cf76facd0149dfd1b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GBPP42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf588b9f0ccfdf03b1f12737f657c4cf9317e1a603363f5a1b360aa238e236ed4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBPP42400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf588b9f0ccfdf03b1f12737f657c4cf9317e1a603363f5a1b360aa238e236ed4. 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/GBPP42400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef404ffc9bd022dc43284171f7aae8ed01b860ed57155609588c2b01dfb8b61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPP42400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d69ca8e39c82054bacb65e0956b0365d1dfe9767d5ce748504c4f76bc8d88b5. 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/GBPP42400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7876395d0228e4a9e3a018ebb18e18e28fb27484c2b1a466294cdfb33b8cf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBPP42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4277069947be5ce20ee7db21437129041e33015d0a986b4048ebd802f6c73eb. 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/GBPP42400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf588b9f0ccfdf03b1f12737f657c4cf9317e1a603363f5a1b360aa238e236ed4. 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/GBPP42400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef404ffc9bd022dc43284171f7aae8ed01b860ed57155609588c2b01dfb8b61. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBPP42400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b30912f4405f3e39e8ca3aa0587204deeb12fd15f2dfa862cc229b21ad79d86. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPP42400008.