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 0x42d101000be4eeacd8810ae1f151c5b648946949a29e57c04552f74099318788. 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/cf355a9b-d70e-427f-a8ba-aea65d2f082d.json and https://artists.proofprofile.net/proofs/artist/cf355a9b-d70e-427f-a8ba-aea65d2f082d.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 0x2b161f29e2955a3c65b6e85f1abc27a9dfff8a77d82ca7455cae86c5136648e0. 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/USDHM1911574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8243eb60f89b1e7e1907033014f303bf371fe71fee27eb2d5be637bc2061ad. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:43Z), 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/USDHM1911575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f223e816ef20222f3107aa005209a02762c468a53d1c768e7c81d5cb95d7a34. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USDHM1911576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd51a84d1ded3b434443f83a9af605aabea3f4f189175bcbca1235060349677e. 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/USDHM1911578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abd33ea785ca8c6f3fac3112f54e73a79bef0f66ac7926a34885b6718334586. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USDHM1911580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7680c07564da8888da7abed65da4c97e243bd6eb685ba3c5d2f297ac33b74bff. 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/USDHM1911581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c81aa9dc7c3177232bff31cc1e658af09c7a90ca221e1817cbea4e3d5e060e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:06Z), 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/USDHM1911531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af91d43c1e24207fdea3b61ff41fc46c37a6164800402f6038eca243e476adb. 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/USDHM1911535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87db2a148a091f09c1fc93d9b3d9027ca08d800e14c8f6ad1655b742fa1a836. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USDHM1911537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c77c8ed7a306c6c6cc366269bda1d9efec80b21571be9035077d73da3568a. 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/USDHM1911538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e451d0536028044dd0707d65bf2e3656b9f1bb4eefe9b8da3faa05120920b58. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USDHM1911539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088f7490f0b899a5ee67dc0ef5fe04c15009e86698449cf528926f102f04299. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/USDHM1911540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be5cc516300d565a596176bf304e4439ecfad1b0e3d18ccb674be506eb584f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:48Z), 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/USDHM1911541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b4be872f5451c789ccfa5429a220fb847b3e697df39f912a0daf12c7bca57. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:56:52Z), 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/USDHM1911543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779fc042b8307e8baa3771947a85d422b09fc849f0d4f8db7eb58998940a1eb8. 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/USDHM1911545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f4abcaae4df0ec2f1dda019f568c27dff4898809d71b701616aaacc3281ce. 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/USDHM1911519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3559d9ee7d4f0fdbde5700c82b993d52f0c5eee55b247636ef06b7940b35fb6b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDHM1911527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6505fb92511a009cbdc76efda12e4587338854edcdfb4fe1493f2211639ad27. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:09Z), 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/USDHM1911528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bfc407016584e8142920f0f80fcdb8d65bbcdb40a52bfd2c89cf8c4f0edbe8. 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/USDHM1911529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6278e46b23017a0d429c6b7b229f43697c2128cbf8f6b2acf11d91f9ec564202. 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/USDHM1911530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4ea52fbae8344cf0cfcf62d68f87b7ae933ffba0156a2611ff8ddade9ba04d. 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/USDHM1912169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5573362feb76962af06b9778e1a440b07f234636e0dae9e1c00671507dae34. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDHM1912170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd721440501ce2803117f6f3fa0b91708902345ea231446723f68f6c03403e893. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDHM1912171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eaf5e4338b278c6960cbbbb2b8f57e4a4d74eb768baeb5bed074ce3e0aec98. 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/USDHM1912172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d03360843e093fae39b6d0f76bd51b88510d30e6c048e981fd041e27ca603. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USDHM1912135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef51b2786923d5e4e9224de97895ae81902277407f792441bd1c62a3345934. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1912136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c91a6b3f8ac9e1c2f91524d206bc4893dee838acad9f899ba990b62a7819fd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDHM1912138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5589299287d20f7eaf4e60ab8e4c7ea63095e8c46be965ddf9dcf137fb95ab2e. 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/USDHM1912141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa599853b5e0c06512ce3e72e5e7ed31df18151f533182699d3ccdb7e8c0732f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USDHM1912142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b984d30a3e3504e80eb1d729ff4d375709ef53cbfe2d32aacb1a5f4d9e763. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:54:20Z), 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/USDHM1912143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b6ed5d4295cee107b9100787d517d197498da88dc91cc4cc27c6f55f0f45b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:31:17Z), 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/USDHM1912145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49ae314cbf718d72f4ea9d33811f1d0cd55354d55041365d237e52f06b5d205. 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/USDHM1912147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a26f20a19715731e62771603d275928d6bb29b7cb1567ce7d9de0a042337e. 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/USDHM1912522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3120d6a88100d64499b7871d36ada749c547e190d5cdd331db0e27e2b5699537. 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/USDHM1912528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4253bb24d0275088b0bd831f0df43e469706caf79c4a54232169a31e3a16f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USDHM1912529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574ace91fa8b9dd8403ae399127110ebfc5eb1ff655af39c23aa0ba36da7f66. 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/USDHM1912530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bc3560079439c360e80c2f084abca8acaec9782d4998fd60d91074d24a414c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USDHM1912531.