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 0x56abd1f5ad819bc687bdbc1d7e5b53d5c4ef44e27db1d6e404a77edd6e7adfa0. 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/f502c09f-c7b2-48f4-975f-ff43e2491cb7.json and https://artists.proofprofile.net/proofs/artist/f502c09f-c7b2-48f4-975f-ff43e2491cb7.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 0x5e601ee84c33eb73f1e036be80ee5770bfd6819a5df47241eb7b466d1760676d. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:04:58Z), 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/TCABX1449338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd120229725836a4e12e1e6fde5a79f7044e65ac7eee3df4b9eda3bca70a33489. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCABX1449339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e651321803d3c96bf7e1d3178f1789368961085eb54a85ff4d88e61ec281ec. 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/TCABX1449341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90262e132086caedf27c9437311c80ec6cf47b3893fe9f2bc3b604a43623bf50. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCABX1449342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160a9941b7e4cf8574c1bf2a8e6a9c4ccd902fa2ea62a23f3452fe1e65f869a. 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/TCABX1448724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ceb63de95795c0605e5a3c42d0845cc1473caaaf2cc8d3167c2104a3cde555. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCABX1448731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6615ac942ede475140fb723f08f7fd692848dcd03f355a9efdf80afbf6c16b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCABX1448732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b2bb0e2e21aee87843a5c6f433196b079985acbc63da0177c7852bdc10d0e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCABX1448736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88937eb3ed3e1defd0d51aee72a54d4b04bfc63deefd63ae0263e8871602a3aa. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCABX1448737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe124b6f5e6f673a7d84e22b0a8b2f26b323de27f889bc4f8b3beabb77ff84151. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/TCABX1448738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea806ee1401007a2672a685a9905726500c3258d7c7e77550cefbe51a465b0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:27:21Z), 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/TCABW1490600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f10543893b2f7c9f113e61cd9e671d76e7aeaa5f2775afa9c717948b4c2ec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCABW1490601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b33898b408d0c908b163e23176262a2802bcfafecd80458f7dde7ebf6c13f08. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCABW1490608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c89ed83092172b3978bb026abd462097c33c2d630668b8520973f256687420. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCABW1490611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46d2b89a3f2ca2cf3ccee6bf2997e32ae303cd2b0e20843967493b1416d28c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:20Z), 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/TCABX1437690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda482477e72a32902031c08b5d3a1a48ec0456ef296819d08d62b8bb54220d6f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCABX1437692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c10618b4d5c4dcb4657bc7e3415c623f4b2b0d5835441789dea2c5af019708f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCABX1437697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d3fb8e4e19020cc40fd53300ad1c99e5f8e530cc022c2621d3bd190b6f0e46. 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/TCABX1437699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deeb259305e3b2c04c5bcf932ca6604f17c1524bc0825bcb4b6027a3b7e4eaf. 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/TCABX1437700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf88fa3a962669bcdfdd7bb08a72a3650a236c9760307e24810018a6aa3628c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:15:11Z), 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/TCABW1490537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067fdedaf18516a9c03315dbcd9ee39928920c37bb869d37d642ebba1b536545. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCABW1490569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763cfdaa582298b14c782e633f59af3243afff535d6736fedf90f0aa91ee8f90. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:38Z), 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/TCABW1490575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6007cfd274736a3954122ab2677ae1a67b4aba242b593c55bea64936146672. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCABW1490579.