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 0xf4cdcaecc3a7b91e74f87ebfdc72b787eeb18afe288e8d03d63c1e9cc616fa89. 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/8c58a82e-46b6-4ce7-8fe8-6bd1fe2c57d0.json and https://artists.proofprofile.net/proofs/artist/8c58a82e-46b6-4ce7-8fe8-6bd1fe2c57d0.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 0xdba9528598ef30a224c49bfd8eb0e23640861748749b5f9332fe60beed85f0c4. 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/TCAGY2362383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae943f2880af0e7567f8e7441feea01f6154aa8731fb224babdb5642aa90c306. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAGY2362393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d39cbb644d5921aee6f6be131a7e97bd741a6a99796252eb4b8017ff59644. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAGY2362395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799024e00c466a6c3b9701f993bd039f2ebe37e12d7f813ddc9835736ae5558d. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:53:59Z), 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/TCAHA2363270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b29908787bee2a40233f73cd61d54378ac36cab162fecddf145ba74e1855d. 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/TCAHI2322699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9beb1e256de835aeefbcc39b6f430489c446b46033ecaef86251ab577cf2fe. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:00Z), 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/TCAHI2322708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daac11cd0052b7be64111d53a14cbbd79baf7d014801ee15a9769c01c0b5c6d. 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/TCAHA2363215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc6daf702cd13af36cac943ff63c331b417bbaa48ad1426d4a5216eb779875d. 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/TCAHB2392894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95579754303219cc09ff7563ea00d36a3e83206cc32915a79f9129f732a6e03b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHP2393484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd1dd540188507af0691bab9997670299cbcd2c41da79a35456a53388405e63. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAHU2425563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34a22f557c2bcaacd3d4e0cc9daaa255153bec178be3b84bc35852c9a21e625. 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/TCAHX2401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3ea833695909896e01192e8bb9e6ab07533336925befc9f7d56cac43e8e89. 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/TCAHX2401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90316959827a38f606055c29d55beb2047068e2e116834e45997d146661b899. 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/TCAIA2472360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e331bb36343cd43acfdec80e372794a1708be34811fa614f5c03c933264261. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:27Z), 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/TCAIA2472385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f9a220abd7d7e02e7e94e6e9fafe7d14b4311d680c85a7682c0b2dea418454. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIA2472395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ccb082028da24f3dd5cae633a5096023808f131c4542451c1117013498a17. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:42Z), 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/TCAIF2401425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa2db63a9ea3bdf59c3d77afd4c2dd146e841cdbf7229994d489a8c1a344bc7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIF2401439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d202b109825d508408088a3214067d315ce939ba10c31bdbae92bf0ad17cef. 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/TCAIF2401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03e8ea47534b53613f3d8ea69af047dda86c6fbe0ca997a312c72ebfcce6239. 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/TCAIH2477170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7a2952a551fcdbf1c2e630f362ca5edf507440046e8c3bda6e8d85ce3efc7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJB2430329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc93a57a6de299fc3a20b3676560a317ad33ffa7f9357290d5b568d404e8e3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAJG2545856.