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 0x912eb7e8dca8920c2463d2139c6611db27738c36355f850b5c8fad9fad34af7f. 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/5ef2d023-55ba-42cc-89cf-988ade35ac15.json and https://artists.proofprofile.net/proofs/artist/5ef2d023-55ba-42cc-89cf-988ade35ac15.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 0x2a73424a4f276a619565c62d70dd5e5f083b794e70d6168b7b08873982525fbb. 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/QZNWV2256069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d599261349dbe3a49015e909dcdaaec9f77fd12a735eca006b4222a788e1759. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:04Z), 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/QZVEM2390855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d65c0f2fcadc1995c8bad3fc4cad5087157c1a5f0ffd5ba0e45dbb116f7f98. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:45:15Z), 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/QZHNB2369877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35595f2aed3f4d0bb12d31e459f5983585558c6fdace4b893d410b4e6e12cb4a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:44:44Z), 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/QZHNB2327859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1e01a59658875d2ffb1d50e0acc2211be745ea0f5b04ed95243f8182672ef. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6J2347561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba589e2ed1af2a4cc185789c70a2a3f66e90107422e890cb7563d07c15f0af2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZK6H2341904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb295b35e48c7fa37fd9920bd6282caaecddf92dc4a9b8f10e2742a39c7237d05. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZNWQ2353182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e15fba685953486f283b546d1eb1675b626bb209975841eec0ccde49bf42ad. 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/QZNWS2378166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2662995a4b10b4a6265bf14213f8463bb430a3294e68e341d3297be4a5a487. 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/QZNWX2384461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc144cca280cda6ca14bc4f8d734562cea47bd9beefd5c465fcaa049281f2417. 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/QZNWX2312798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023880bc02c77a66907a427b0a92ee545efb415e3c3fc798db522b1f73098f9b. 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/QZNWX2312799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee71d3b0ad12114c51119033fc007801a19cd37d3fbd2e04210effb44bb1d9e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:35:56Z), 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/QZPLS2358231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f06aeb486c98836f8ba882d44a389898c586f1b855132a048023a1fc8a6e5f3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:25Z), 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/QZTBE2367785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4262be06bdce69518687104bb7cb066cd188e6143e81c3de1b1dbe28dc0bcbb. 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/QZSYP2313474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89d1d24fd34f40072e457f830aacff7a9dd8ff9198b47fae752708f64e53ce1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:03Z), 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/QZSYP2383684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3cdb2aaaffda7485af5bfd6c8214f50108aed86567e870468ae3df03c409bf. 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/QZSYP2388741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af5ec6eb289238a0674b3ac978d09ae8466351ed4b7f1e837077c4ae23f1a82. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZVEM2397638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b5efcbab9098dc4312f9f9f131b9f7bad36dd1a640604e1acd781b0a422ff. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QZPEW2407957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807cefe47f9ad326b413075d83edc1a9a851aeb7e675752763e13468d0f9466c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:09:59Z), 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/QZPEW2415775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb421f444bf385419161821fa7dbc46ae75ffcdae7a51810301a3f95efefa00. 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/QZPEW2415777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741b09f8f076d72857e2acfe7f8bf0e7ac13fb5bd0307ac4e5fb017df90002cb. 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/QZWFL2451260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328eaa2bd67d588cadf911e3e2c30f94f71d94828fb6d38f073b83909395f46. 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/QZZ762471997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aadb559e1bd862f824bad2e5a33866c078f1c23999f558ac623cb9d5a1d2ae. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZZ7W2468185.