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 0x1323d5a85cbdb8cc2a3cd5d446a0af9b7983b45232753aa0b378ab29d5862d7b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15829584-8a82-4295-840f-19a6f8d7525f.json and https://artists.proofprofile.net/proofs/artist/15829584-8a82-4295-840f-19a6f8d7525f.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 0x10018183a157c08cc564997d694cdc1a4440185f524aff6282ee0588b33e0ec6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFYZ2095098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73c3da1c99569a8112bc3c44314d116e03f1aafc830c77bff0c54aa2ac82121. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYZ2095099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c580f56a27a6cb5a1e355fc4fb5a9ba8cae55731cfc2174b9275c8923544c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYZ2095100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a71c7668278d3dfe2a2731efb433207de9eafbdf23bea5281c25fe8200586. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2095101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2f72c7e4e3b22924072c23fde5b1d17a0bfc0af073d577e89421ebbf40f04. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYZ2095102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd4804fa16fce12d2f19a2ea811035285748e9bf064d065811734b733f22566. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFYZ2095105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd71ac8bfcebfc010786428df23a2e4f9bb929ab27292bef9163a81ddb45f5f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYZ2095108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f647e55304a8658c50f5b3a99b19427308d3c2b4d11374830ddadb13cee0761. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAY2440355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131c1ee561d4a60b3ba4e4eab83fc5719013f43484fc9a9d90f7f16c9705619. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ22476901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6692fa6f29404223cd241f7c94eb5e03c1a289957bb2b0a6d9a9125d42a265. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAX2398485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841911dc4d31fd4e8053f1bb4d4b44e2dd85d67635ba4e48610c292000c6db4d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWW2368071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0cc21cf98f48124b165e59d629c71d123389520fc2e74ae2653c42a8a4ae0b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZPLR2267720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111edb9c86b105e387a6d92b5671d873ed3dfebaf77d6500feb7df5298242a99. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2292060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e11d631d2b9ade8fe7be1955cc10f714cd213b5aad723a2c6136a7e9cc928b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWQ2182849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89c0e6408679aaff4129a7d3a6e9dc11f53d7f538399d16f7ba5921fdffa2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN62138137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9142389a4553ae78616f631bf91aaf40d22cd064439acc8ab430fe8ab37fbf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA72151788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f201d3243ee2b3da6944dc25ba217a52b940c78d5ea4de6d4b48313eb34079f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA72151792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7512417f5d4d6da286f943bfe8d54582f038935fb97b8620114809b3159cbe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA72151793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0929494e893f78e5ccb5640798bf566d174cf147bb7c042aefc32883fdb1f3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ42070795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf75069f1370a0f0dbabb229ebfaa15af134077ff8ddf2deb82b48512665a85. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6M2089523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148174a03f0161b6172e02069d9621c13efca7f64fcb8706f55087b34ee3753. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES52038200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9b1c23880f52061d8b96fdc77dd3bab65bd10a2985f4ac5eb323fbf8b9607f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN91980346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee22f116d8012e06aeb01518e99e1814e8c3f21953d43a46319ae0a534cf937. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN81905047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc04d53ea1a0aa96ccb147fc6954a4177947b30ed8b834bc3356c91503fef1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ71915930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d83223c8b29ea8bdfa228d9dfef48f0cea573a45ff6b23d1f8b68d7ae5a9d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ21959311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a80c75432a11fbabcb737646dd8e36ac17a334e26103b5a7b268ac4a9f351d7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYW1992895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b41805e75ccf50b4c4a8791e5064386270e53e1dcf193305937ecdb6e85fd6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADL1862113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d1f7c5f7a1412c16633764ddfc0bb54d791664b0a39c5a56aac25c60530b11. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADL1862158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd5ea44809b8ca4e6c8115e8540ba31c0e141a3df00c94fc221f1aa68230282. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADL1862156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc1531292c5533e4d60592d857f8711a0b25f9983314a3646408e00765ecd51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADL1862155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5e0c853e4bb0b2b7cf7a6dfd7f1a04d7c195253964b3842d51a7c63bf01f50. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADL1866530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0394e0fbf4adc44596da8fb9d2bdd222fe4e52bbd98343aef889864c45700d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADL1862159.