1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xaac365798b3d46f375c2054df902dce9965b79d887d31c6e73df907eabad108b. 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/4ffae00a-e0e4-4349-b71a-768c5361e001.json and https://artists.proofprofile.net/proofs/artist/4ffae00a-e0e4-4349-b71a-768c5361e001.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 → block OTSBitcoinBlock must exist at that height 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 0x5a037b5bd86a2abfb45fcd3420fa5aa2575608365e129db7e0ba6f97e1e7d9e4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USL4Q2399510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361946a1d5795581bcafad3878348be8acfddd5085cfb8a35924176656920876. 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/USL4Q2399512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6564756457dc5aa37f2e8cde3d3073d8704a551d681b5fdb24d784546ec8fa. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:36Z), 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/USL4Q2399513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd731532bacac7c7cfa5dd67c402559b72efc845fbefdd47b39a2d77fa663bf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USL4Q2399514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b260094cebe60a2007af875476e12dccf618988a525cd998109244d71119f8. 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/USX9P1065205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394e6b8380c4d78779f1d3fb814743522c27cebf29e9240ca029f9cef0573400. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USX9P1065208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e18503513c963e7de18b4a74f11cbf5c2ad497a124c7a3541c1c31191dd3bd. 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/USX9P1065209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa331bfa8247a65a71a98fb3eea5eb519a115925c0fa7157a72bbb0a44a7dd445. 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/USX9P1065211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878731ff7cf7580142bba87039848025b1e87d05df83c7ab05c2b5b811f8d886. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USX9P1065213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410d322c7817f800162202709dfb95da45dff2fd0444c5b3c2fcca5b65fa8ee4. 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/USX9P1065215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490063d81a86c12270615ef1c5d454e9a0446d3c98245dfbc736af348c0fc10c. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USX9P1065216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e647c5094c6e9cd19165df66ce8d370976a4370963f4c3dc29eef849d43684. 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/USX9P1065217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22440c323cc5be8fe336cedd39e4e45c8c4d5d43af78325f638abd27b56e51. 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/USX9P1065218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205c7e69cf8338ffc1a4a544ac28f4b9ec6b87b7268c86ea68168a16298d4e9a. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USHM81024623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adaf1e3e00b8598f4537d72310567d80ddb1b9e8657c6895bf8cf335c05e73d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81024624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b5dbaa9b9f997828515c49dac15a7167008538f996327cd53dd3cedfedd421. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4Q2399497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d62cb64338507f7c29ea5d4c0bfc5e019bd00b821b3726bdcca2e795f2abf8. 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/USL4Q2399498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e077bba3daaa137a5c2b1d3ab6d8a4af45493c1e6d671a676d299b52c2c944. 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/USL4Q2399500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92274b7e6906ad9dbbbd1c7fb2fb80ba1e55c988391c33e3fc9787afb4bc338b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USL4Q2399502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec464d93805c8355a17f369c947d95154f244711ba0dcf413b25b09c32f7bffd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:39Z), 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/QZTVM2589152.