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 0xccaa41500556f4bf3c042ab7d6705d6f983e7658863cd4718f830372f49a1a38. 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/77325c1b-f914-4aaf-ade3-f3576e660bf2.json and https://artists.proofprofile.net/proofs/artist/77325c1b-f914-4aaf-ade3-f3576e660bf2.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 0xef96aa22106445b6ad2c9a84b34764be2aea4eb8128796bae13515eb2b6324a1. 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/FR10S2203999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd037e82c6c83b7682e123a79becb6038252425eeedc54f8116a5f85666f74d46. 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/FRX762235151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c3bba6a0a206ab43a4d7905340bca3736fb2bf99cb99b284a110cf446417c. 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/FRX762235154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf438e69abf90389dc5b47d544f348de68a6ea8838954df63d7b998922726d3b. 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/FRX762235155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a18d106bbe90b654544427334b99ba0dff2165946e3b5eb427a99bff53505. 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/FRX762235156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e234a7209f8a945636b5eb33b6ef664dde3cd10940a414bb935370f9c185d66. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX762235157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dde045a8ae818f19e65342acc61e552f699b21534fac02d285583212c79ebe6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:41Z), 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/FRX202359913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc624bd76cb6221593a099f18e1d78722e37d9e7889f266c138870f497aa2a7c6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:59Z), 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/DGA0L2354554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaf5ce44e520debdd31e40de9e32c0494af33f3e4c174fcb939180b79be6251. 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/DGA0L2354555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3fca263c596baaa3ad11ee37acc4801c9a64c37f3f99ddfc720d0ef6cb7674. 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/DGA0L2354556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f28ba3fab21137bfa85964c674bf3ce1f407598b08205f868cfa9c20d47300. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:04Z), 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/DGA0M2370457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7262a6dae1fc977c758120f168666e3eecc687af079c13be1d3d43e3491a4e0d. 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/DGA0L2354557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac9370a187891950799f4ad0b6d8475169bad7db8d15d61a21fce91bee63e1a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0L2354558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0de43d044d33c3e02f7a70815fab5d5f7590102dafb66ba340cfe60165e29c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DGA0L2354559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e5dacb6ecf1b7bb4caaca1a6878883026f3bb1c966bc30ad0aceb76045efc1. 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/DGA0L2354560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fc9f4b5121dfcb07ded32fa882bc9079d6c169069796d71c48c9aaf04a8833. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA0L2354561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1604283ec4d99a837fc4fa5707b72375800741765b2f63173ad20bea7000dbfc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DGA0M2354553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6795394e3c4b2c05748534cef8504c448f06880e78046c0f61fc8dc41d4f34a8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA052368257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c56909d6b1601797956f42f1e3cb8c7e720f09f1ec56a6e0a940189ddcb4ca. 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/DGA052402440.