thumb|upright=1.3|A coil of right-handed laid four-strand rope A rope is a group of yarns, plies, fibres, or strands that are twisted or braided together into a larger and stronger form. Ropes have h
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 0x4c4463e1d07d1d4abac1a888bd4eee59b67b84f64ca1f1e800366f9ab3a4a20d. 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/b9c00387-20f6-48cb-a0a3-762852e347c1.json and https://artists.proofprofile.net/proofs/artist/b9c00387-20f6-48cb-a0a3-762852e347c1.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 0x2f67f637e73d5a8e97cf9c513bf4ba37c2c8376ccdfa8557dcc19438cc1dd60a. 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/QZDA52028049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e612b8655512bbe11c45c85c9fc5bdd47bc1d670b5e2b8f9d2461629d631de6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNB2085262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaf3b6f21c6099040fa52a9425f5634c3cdfe14d6abdcca98d3cbaad8dfaee4. 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/QZDA52027902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023265ab972e7e6e641355030c91f28349c9a4a288f2b5ff010c9a9464bc4f24. 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/QZDA52028052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e0a53d86effb272e2b4316100f0c7cd1f3b88a5c77f4ff17ba3811674f6979. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZDA52190144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cfe63c35eb2676c5601b490e4a21b2a7b6a29b727e359b04545839432f5e50. 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/QZHN52189744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9065b03b8fc89a6d03e1fc8429974b9a184f69b68d1524a0d011ebaaef52ca02. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:33Z), 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/QZES92224531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acc8809a65671126432139b21ccdd926e2f0cce327887e13ff7f896dfee7ff8. 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/QZHN92238902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8deee99ef2f3e7d566996940bd71f07bbacca894d20e9e5c6d6ab8ed7bb6e3. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZK6N2362539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bedfeeea65b58c6988fdcbe09e76f11e6ac52a9376b677ab99f747706665b1e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ5AB1888822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df726aa334079b73396859c944177d168911810b5a392161a4457029174562c. 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/FRX762187145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02648b9e49bdd8b6a33bba50e608dfeb0e76ff416426397c57b505e3959b56ed. 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/FR2X42282042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804282e78cd65d4731791a13e1d4b17a84306c2bce6d3d4579b39cbae1f9c28b. 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/TRAKY2100018.