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 0x232a07d66777153d42d2b7f05df516dc7d452c4cf417411e3a1ff81656bc5a04. 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/50b08c0c-1139-4d6f-9067-170c186fa2b4.json and https://artists.proofprofile.net/proofs/artist/50b08c0c-1139-4d6f-9067-170c186fa2b4.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 0xef4afece6a05cfa800d5d06814b9f2d6d475274e8011b23605e0a9612301c9f5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGM2222505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab8b75117defb87fd1475b693fdbf96b1241f363d725508a1efa76475db6d68. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFR2192871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf445fafb494eed25741852ecba23b5eea52db65d410a226ba8f20f204138d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEN062500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486dad38db1b6a24e0475320fcce289a2145268097725e6def189eb66954d01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5BU2562388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca522909901e77561f29d304d79f3df4738f8716aa4c68156eb879971e91b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5BU2482774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7a7f1e6d2f4d562e8efcc4b46f8c1c08d4af15749c31d1bae232595bde7c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0M2302153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346da9bfbc88ce443836e53345336d9857ae52096c2d3bf347dc37650f12f8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6TI2313898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95faff8aa8329dc7ae518a34d01e679b54ebe44f95048e3716a795321310fe1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6XW2334706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1d6105439e6397f607a2b892bcbf8f2cd0da595fe6b8111c38b45f8746640f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6QE2332782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e22778a371e630cb27367df5ca20481b0ed48b3a002ee8c839cf4af968ab02. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6HN2392598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c12e8a83b0b436fc805a9720d5b392d797dbbde549f7076378f894b913d705. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5752353905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bd7b02131f27de65e979ff16217b581c4b7d0ffdec70fd15edb7babd7fd834. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5BU2325148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d542034f7c235215bccbfff11e624312a62778b6b2c04d12502728d2248420c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6XY2292268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d512a8332444d7ee30385f4025a45fb97dedd5df0fec14865ebad0256173a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6I32238622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e0bb2c41bb82ddd10122e5e4e619dffb8a4c021900bdb708926bae99fcd778. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6HN2247241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba91c49797e6d42024fd6eecf7a821af1c014c63e811aa7947efe4975cafd9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6I32332884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7096d32ed1f1671fc5286a236e5c93e54044c6cbbf72da7783f1a297a416299. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32332885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80514deb00111b0dacc37b36fdb79849d091291568c315b4b8870594b4795571. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32332886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612bcb7f6b980aab846fa25652d6347c4ca26b768737d28d636a0b1fb5f1bf17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32332887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040389a6eeb24b465772f39d5e07c7fa8e29099861625f54b431cb1eab344a51. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32332888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ed39a7feee4acfd31f2ff69d26dc75d0d16d67b5073f4b5f90f0c953818136. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6I32332889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2468c0aaf06996f08fc3d921b8766e65d3ee5ad6f35f4001fee66fc28e8e2f6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32332890.