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 0xfc429ad38554bd56cce30584333020b83d637dc3634a6b457bc1572c4d1eaf25. 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/d39d0ece-9842-435b-baaa-46d52b587a60.json and https://artists.proofprofile.net/proofs/artist/d39d0ece-9842-435b-baaa-46d52b587a60.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 0x85421073b22402424a0159babe1ebe7526ed8c6049dc6c0c0ce0455688e9a56a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMEU31822355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c735abd12f3cac5048ff527c8159ee8869d78882b16eaebc92439d5da5ba7b. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:49:12Z), 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/QMEU31822357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a520ee035e873786c30f36b1c15dab8178eff9a3169c64a0deff4d813a86a9. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:37Z), 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/QMEU31822359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e975ca0859a09059262578056272a4bdce147b3deef7b6016b53c4b2f2052d2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHN32273521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9ba5fc6f885de13d9c7aeefc785dc81aa86f11f600cacae51ef2b3a9e122f7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEP2262193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d84d7cf98fa3428fb1060e5e810b60ba7f9248d1a3ef151fb6905f5cb8429f9. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZMEP2262194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de9165c7dd94771092b5ede3bf7724d696419772021247887e4ce3a02f0b65. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEP2262195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650eb8eac86220994f11c8ce6c1e379865f3ddf1c18f800bb331f85604850b2f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZMEP2262196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9bcfad4a59426706e72f3b2601516dea05a44cb833ce95df24043aece967f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:44Z), 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/QZMEP2262198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67e706cb1f7e5a7c3e77baf3921ec75a42b634e04f4cd59277047ce788ee184. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:47:16Z), 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/QZMEP2262199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba64b8a46665cece65783de11b380e7a09904c92f6bdd216061451c88882f4a. 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/QZMEP2262207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39499d8d1a96f38130d88861765c33582788f17702cebf6a539f605b40308d1c. 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/QZMEP2262209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1411e4193e8007ce3883ed20a09bb45817cc0cb9d34dc99426963337bb561f7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZPLR2391811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9f7b7588f2c6fd27f55d3a3e7825f0e50da985a857abf28067f3db0d95175. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2522315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef9f5ae1f5fa47ae1f2cb9eb6b97263a0058da54207b162dea81fefa399c981. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2522318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b686ab0adc4aeca5378a9e8a2e406bc491091e47d2b2e95f792460433ab5b4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYZ2522319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae802c51e179395dd775a771f3d12aea151569e7a3c6f7dfa4e7e50b0d4471c5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFYZ2522320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4384e649d4583de03460a5b0caca08c6f45f0136564be147f38e2f413bec5169. 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/QZFYZ2522321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03789427b4716002a799b92f294278bd5f910addbf78a08083c8e795999dd6ea. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZFYZ2522322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5d6987b31a1e2d2f2c86ad723e2b598fd0aa5a1cb6aaee28add460a130bdb0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZFYZ2522323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1896835d170f2f85e53b0d0de624716da8a7011e72f71c15394b972e0c73c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:09:26Z), 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/QZFYZ2522324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d8424dd71fa414b45575998cce345b0ee1a63022e53644c28fd4a9056a2f7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZFYZ2522325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5551b193e1a3cc37a409964bf4a2d6a170b50ad8be44f9aad682e8f847420e. 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/QZFYZ2522326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb7c3407d26cc7e2b4dc62f95c7b393a0c1b0d8b852bf8878ccfaf6b3c383c. 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/QZFYZ2522327.