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 0x40ff7f3a960d913ebcb8658f2544c44e1ffcbc0245d6e0adc94cb7ff5aae865c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce8a67e7-7022-446b-a788-1c083a2055e2.json and https://artists.proofprofile.net/proofs/artist/ce8a67e7-7022-446b-a788-1c083a2055e2.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 0x8407f7a4c9dfe21b9252b7981b74365c2745689c23c3a43ec442985ec47bf995. 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/FRX872590398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff98a3bc4dd0a0f3542fefde23aedab4d9393f2b1081ac914408cd1b85debc2. 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/FRX872590399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88216123424ce82128732c83bdf6560ed1c01f351a20017f43da6eafd463d7d1. 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/FRX872590400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea188ceeac3c66a1a696d3ddab6f180f448ee962e3875a0af7564044e20ace2. 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/FRX872590401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0839f9a24a9995dfdf413453ff60167b0d929a17b28a6749baff863ed908e3. 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/FRX872590402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3114c094c6ce6c9143385281190dbf1884bb8cb0d30b6e81833e23969367a50. 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/FRX872590403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcd9d97529232d501c44723e49a424ebb11119afbeb9608533f2d2c68ff79ae. 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/FRX872590404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ea31bc74f8c93a1e4af6ea7a814fcfc28c3392ad3b2a4feab84b31424473f7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:05:10Z), 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/FRX872590405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fd1f2ba471499e9a5ff75d19b3dc4411cfc0f8f82f23006eeef56f84848ee1. 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/FRX872590406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a7f74c8cdde2339976af1476a9eb644a3fbe2870754fa48a0648e962cf2b78. 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/FRX872590407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1615361f7a9174cf6a4a2c28fd3b2bb5d80c094a692481281ce9509307739. 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/FRX872590408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e0bd329c195c0b53dda9bf437668ee5ece810332f9fc58692194a1f2e35779. 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/FRX872590409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39590ebcf06566b5497fd076c14cb681240690b5e880f435a44f7d3a1d9ebc16. 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/FRX872590410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7d1e4bf85bf42b6b7786d81c4d3b785b297d68cbbcec48f00ca72d1282eca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872590411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e39323380f210030a1300fe117ac1374e707401b6deb60674c5d4bd2b9f00ff. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX872590412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43df89cabbb76ba1de547bb9409763e5db1fce49333e797e84690f7a0b92461. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX872590413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496dcb5c1ea271322b7154e414c86b979c056d96bc6a13fe8fd09b99e68bc031. 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/FRX872590414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cdcfae2588fe75460cc3bc172f2ac9e44b1d86586207e1ea882b77a7375c7e. 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/FRX872590415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1824985452326acfc25808f734649b418bd5ce0766328fdf23e3a57d6bb270. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872590416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a702d384001a3a285978202769d26e233c3a8952efb31383d58039b08a7bcb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872590417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50064885ae5ca2a2f89c5cfa4874dd7e5c30c86b2f21b1539d8c838e7b6fd2a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:03Z), 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/FRX872590418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a6ced1506dcadd703970cf3007dec638ea1daa4155b792b095685afaa57e49. 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/FRX872590419.