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 0x8428b03c7f16cefc7e04eebfd2742b77cf7e9a8de03f707bac98a1ed557a87a2. 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/25529f96-44e9-48e7-9f55-3c31def7e467.json and https://artists.proofprofile.net/proofs/artist/25529f96-44e9-48e7-9f55-3c31def7e467.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 0xd85af7deb31ed318d97dc3bb5c0c35d9e2057438b2930d6e6fff487a26286a41. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZTBF2422491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b342cf3c2548fd73ca5180549dfed21ae9de89b6ffe37b55ca76b4a8842ee1b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTBF2422500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c220c4702f6bb3be28d7adffb5840411ae3ba2ad9472dd025de900ab89cd7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWFE2425274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cbadd6eca80018872e2ba58f81af4cb1717b7620b0e0a686462d107efe8dab. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWFF2466036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48312f13cebb38d3a9b15ddbd5eae4ab4679170af8686b353f764ae21c5f2666. 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/QZWFF2486995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918351b3efd5b7e21770a622050a22b05f4874b17f4fc78fba2bab8ac397527. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWFF2490693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6183fb1a0c5a08097e12f4e553e33af99c524b3312b29031b99a306a8bc97. 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/QZFYZ2593576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf10bbd8e301a2f4e55bd3775a90c018fd29cdd164e13b9496cc4ba6f8cc01f0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYZ2593565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e593c1b76fb62b7da0ca3daf1d63a6974529b95417f0b63c34b4a26de2e226. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZFYZ2592532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c7c309a12358966993234753d04acfd19bf7c2c659482a630e742605b8464. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZFYZ2593592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328748578ceaff3a90d3788257b44bfd2754cb09cb2cbf420b3834e8a7829ea9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFYZ2593582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c60cdb48ed5c8655561bba1040c728171442e36cd0065dc462d7a52421ce772. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZFYZ2594923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10db84fbc6d7453b201b6b8c94868ee93eb56fef3a537cb3954ad984fe79f959. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZFYZ2597865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce4860e9ddc7037d0715c65323252804b32787b29a127ac8d3c911ff3562488. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZFYZ2593578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0feb559b6a914b8694af4a248b580520b5221503f2fc4bcabea4487decbb56. 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/QZFYZ2594921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32449af4336b29141cb7dca80508aa07ded0b4646b1f06a036e2ce33e72b0178. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZFYZ2594922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1e1f453977b08eed9b9743b86d0af7e399b249cfb1026aa54a1657b9d413f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZFYZ2591264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aaa3b977f76bbe533f34b296a71644dc65aac8e807b8bbe65b1c6efafe2c32. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:05Z), 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/QZFYZ2593589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38527b2a5d95295e952147ba55ce840c94b2eee41c9381f4b9cdb5251f560117. 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/QZFYZ2593580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06c8055fd5a432580d9fc6a861fabd691167d7044c59341208d9e17b73c1e6a. 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/QZFYZ2593838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0477cfd9fbdb42fea86e2327e73691b69745969026038b3e3010c99a10490d6c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZFYZ2593873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193e4b67e331f3e50f2a5346336421a32aeed5785bd6f84676bb4c97d9e45107. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:26:48Z), 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/QZFYZ2593867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5866e45121c86c78938ab444fe28f2f7e3e66f3ec56622aad847105baede50. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZFYZ2593850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a373e33a3b20e2dcf2e4cabf4b02bba871cc7ac94b15255159123d56806e8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:18Z), 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/QZFYZ2593872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44aba8cf81b7552ce0685e97649a81c98019fb33d014b05cc3057434dc55df4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFYZ2593851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc772b5545634879f5a719a866b2139ad3cdf8cd35f0fa28ef847044b56db964e. 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/QZFYZ2593871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58657aa0ab10efa1c84e9f394ac3c2caa001a5c316300e6acbcff779c40d2f40. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFYZ2593868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eccd4e452a0f2e84f4d1611f03bb18a147fba421000cc8308b85f49de3f231d. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZFYZ2593876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec1f47274e39e60287aa63a1a8d8a0f7aef3079fca515eded5d787aadbfa0e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYZ2593870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6be917b29e2b3eba77c906b903c29639ee5dc542b26050825f620a7fa4229f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:46:46Z), 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/QZFYZ2593877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5037f88af339a39923fbfa2fcdbbc164cc9495d8aa8e7f9ec408482cc98bd088. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZFYZ2593854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfae00c9ee3a800f709aa3b75e6bb432afe250b42d1cf368da42eb00b8f86bf. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZFYZ2593866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23af0607c6d6dc66cfae752664bd43c8f3c97a716a9e3f31847b2ef048c42040. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZFYZ2593857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb57e76d4214540d80a922777c81e86671bbdf6bc2a35161dd69670803eb4e0. 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/QZFYZ2593874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6b92eede7fec095d81cefb26057be10ae11a0700ff8d3bcc26d0220f587a81. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZFYZ2593869.