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 0x980c36a4831717190645739c3419a51592e481bae2b4c94b7aa620d2cbac0732. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52e52d1-bf3d-41bc-b2a4-75b92bfcd2e6.json and https://artists.proofprofile.net/proofs/artist/c52e52d1-bf3d-41bc-b2a4-75b92bfcd2e6.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 0x0838e51ba64fd62d4b36115d43e05ec2445c812c7a8046269ad1ccec63207afe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE2VC1200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd919f92b36d638e38320cd9ba9c1f8c6eafec27f0f2816862080386c4d96d8. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SE2VC1200807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158ef8659af9f38dc21fd20c68911f37ff4c9bcc1041e4226a4dafddfd235348. 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/SE2VC1200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ba0a4cd3e42137c5b8dddcef2febf7c76455af775a21024e0a53ff502b4815. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:58Z), 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/SE2VC1200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee51f513ca230b73b9c52828d4a28e48bc4e4bd54f249aeddbbbb97328b5a9f. 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/SE2VC1200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c0729922efbe77b8188cda4b98092c517a83e342393de102737b6a10e42807. 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/SE2VC1200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d256caf6e1e592bb6e1a39c4e14ba0b80fe7b536cf82633126d3384c48732fa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE2VC1200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab7636cb1d52846c09ea58cacaf8953e3d7315c5c9f1f35adb359fc821c1daf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:52Z), 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/SE2VC1200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d6fa45813263d91bb9d4f2fcf4a649fe8eb8bf5809a89ac2c859a9631ab45f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE2VC1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dde72580039c787208a795a63a77a92faf08264121b122ba4f027a172d014a2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:19:15Z), 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/SE2VC1200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b8f54a0840f9cccce70279f73629ff36159c3b136d7008e2e54c38cf7ab30. 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/SE2VC1200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f9cab4d3437d333724f897dc0bee29a6192ed508d7c352a37b16feeabc0933. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE2VC1200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b7c47c3b8d6216b012cfefedcac61815e347498c26888b161ea52760fddbad. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE2VC1200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c4cb9a55e503856ac187162bd556a2bb695405fcf15df64e5267807fd29aa4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE2VC1200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7728992296d509bf7dbc9b5c5a551674264a9d64532c703d33ece8d2f36b122a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE2VC1200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a2205d8308c30240581c88ca1b7a0ac2e570b0225874a7e89e8599da0be711. 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/SE2VC1200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd3aab22fb844ea8649a7ba25c10dba03e5e7160246454220023d53c1f9edfd. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/SE2VC1200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416cf92a0d31bb87a57bca5fc936d13d94cd92118168aaec5c7ee471a36704d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE2VC1200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8816b0aeb20c2c5818b1eb27e6924e8f79ab8ab9c96cebe332fd8558eaf283. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:24:19Z), 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/SE2VC1200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109e26595ef063fc4914e77793297f9f37c6c036d39e5f0efa0a544b18dc975. 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/SE2VC1200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ab9396f2b3ad5ffd2171293be2e6063829aaa0d4aa2906917fa4a3267eab6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE2VC1200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0afd45e0d5635000d98d4863be961b8a2fd7ecdbc88d812c40230fb6c08384. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:24Z), 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/SE2VC1200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7bd7d0305cd50ca641891d929e59a869e7f3475b5172aca91fb79aff4a7cc2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:36Z), 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/SE2VC1200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf997e83e685a64862d11d235d928e7d56aa2542f18f91e71de7de45668d6b4de. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:24:19Z), 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/SE2VC1200310.