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 0xb1b317ad217f6be08fe2f86923cc5eaaa42c14d3bfc5482851410b3b7bb5d0e2. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1b437bc-b084-4879-a9cb-fc829a5c7457.json and https://artists.proofprofile.net/proofs/artist/a1b437bc-b084-4879-a9cb-fc829a5c7457.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 0x5c2140e9ba1f2ad35765ffce54f350af71cfdc9b78f3ca5f13795a6cbdda27bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472379832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62119409c488dc126f94f71bd8334d009670ea1a77e30612cc4d3067c4389c7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472379834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e6972c43fe869be9874491b0ed8e6a93534e75b0d5512ddcb4e75a0f0f94f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472475766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721f99df5027fccfc87a083069a839416d56129319a312a52c220c75ffb4c36f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472475768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72b25dd18fc8a812eb9aaf47c47d21aed763e303160b40d8c21d7bb62b2be1d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472475770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e95a1c7bf1d9c8ab5b4a01642ccd66a43e9a8798534eb4027fef825ceb5f01. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472473273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da3187eb29a3211fc2045dcdb59517ca89ab1264541fce659cbcd6d4744062. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY472470711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308995b6ce27ee2b250e86a2d750d89b5db004df5407c5a84a845f85183eaeef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472271920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ecd5f5704f1e9e532399a126fd2ad0f64167950a2702ed8a6d83d8967d329a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY472271582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89118a1e0238b752db0461dd04d55d8896bfb1a41ee7e4700451bfff51a2a5b3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEY472474873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a3989c76294b3b630ae6021255f82a115045f4d0ee87db3395587f8799a86. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472474875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802ef3163b3d1733c2efb3509971221ae1ed97761bf83475b4ac4131dd691b95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEY472474877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e95a1c7bf1d9c8ab5b4a01642ccd66a43e9a8798534eb4027fef825ceb5f01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEY472473273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e35f6adc52e3fa3ff6b91ad06bdc44f6fcafe30fc7adb32358f975c4bb7dde. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472376765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18e8da1e6b7e66bc413c80fbcbf44b2061645654256d8ef79b25ad85d624917. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472474880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade7f91b78133996fa1e8d57e99106f54664f1515c36b01a9ce60380119dd31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472474881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d21b9b28ec640da06e1637550d3fbaaba8ab281d3e2afb1087a8452469fa0f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472374982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2140e9ba1f2ad35765ffce54f350af71cfdc9b78f3ca5f13795a6cbdda27bd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEY472379832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4319a05b13fc8efa619cc2962aa5218104d2406eb4f4333f45b8330271b4f95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472373155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981e0887e4421c6b071b0c3f83704f6f5e8e42071b9c1f9295b560d5de1daccc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEY472373157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c55a7e61a29388901dae365acf7d4084af1f8d7e3d93524fb61f806a3879be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472373160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca2c9a3fa4046cd30562277202c24f06909751393b44c76e0487a8ab88f8443. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGT2391920.