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 0x0b32879f73b85c23634398c1d9bd17ffd6b9d07ef3982fca05479e82c696de3a. 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/37b092f2-a89e-4a12-a5bc-2b7ff2c4ce8b.json and https://artists.proofprofile.net/proofs/artist/37b092f2-a89e-4a12-a5bc-2b7ff2c4ce8b.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 0xea4e9c204e2a9d3bd4bfab78b7fb9c220510c8b28b052a90e0b02626830f0d2f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES6080562605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7808f69fd96fba814ebcf1b5fee442dcc8787439101dbad9008afcea97869db9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES6080562606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6985148baa5eb9c2fa0a7b6390a0ed3b0445f2d239dc496852d8bcb3b206b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:12Z), 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/ES6080562613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d631656fcaf83fe9190b6c120b1516fb6479c5a7a107eeea01fbd151334aeb. 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/ES6080562614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbbe57f6bb847ca4df2e2aafd5b880e632d207298b50251f421a7256021c78. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/DEUE11702328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b01f9a184083be41855043387a8311cbb85c75d5ae5fa3fa94fcdebc1dbee1e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:51Z), 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/DEUE11702333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f78e2c0f84a28708dc6c33810f9aa039cf2d4b0bfa77d704680d8da5367e64. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:36Z), 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/DEUE11702335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40ee8583384458a544821260bb7ca057e33461d82e675eb9538d1f7b7c70bea. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:11:51Z), 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/ES5029800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f8fdb1cfcb797ef290b4a50262a72f554bd072d6cfba0005874ae516481db. 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/ES5029800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a797dd5f5a6c78438d39510dd631ccc9895d4646c37f164408b461ca5f6c0d. 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/DEUE11702339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fe53279d626a2d9c4ebbf2ae93780015d737b4b65d66bbfa22038a918688a8. 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/DEUE11702340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e73435eb799f84fe29d11ed56b50ab2e6e568442a28e8c7caca4e0d35f1784. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/DEUE11702341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda136b777a9a8d04b5c5661a6320cd19c90b22fcb13b7704a4fca75e3c2ed6d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEUE11702346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5e889a3dc85a9b2cf5264e56aebf092cf72e007144726c94e9179e71f1760. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEUE11702353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33fe88d9ddd3c843d8b39f69c8515dbf60deeffeb870593a56996fc1207bfb7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEUE11702363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f25b4eb9038da8166184151cf5eb8a5219439d1dd4993d30390891683c070. 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/DEUE11702369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e6caa2bef72b957146c7bc360cfbabee16f5bf4ab125048e756ada5b5ca998. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DEUE11702372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986acf14df985bc27f9c106e51c897be32090dde5f1d5c9ab31ab3bbe026250b. 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/DEUE11702375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b518adbaafc941027d066cb560d96751dc89442e5666235a0731b71daad3022. 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/DEUE11702379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6fbd95f3480118bc58c7f1aed35ca0984e4364de60970e6ac97648b13ae1f1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:44Z), 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/DEUE11702387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f3526918c14d70146b5ebbe12590b4abccb3e5e23e1f77f3383c0d2d788020. 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/ES6081063905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05416bd92ff967764788ccf707f5a38b9deb6c03133e1a1408f0890b1ab38d97. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES6081063907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a9673004054ca776792da293c1a456094d603851a837d6822069e7378c2a4a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ES6081063913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5824dafd3624bd9cc58320090c834c05acd0efb5242ab6448063c6489d66d2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES6081063914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a06ceecad9a547ccdc09d250d18f39d083696f269e8d7c4d9134ea22418e2d6. 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/DEUE11554579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750047df86d2d8c6e44cc963c147cfde271ad65b454e55f5562c8c88a822e160. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:23Z), 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/DEUE11554585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088bc178a3112f8d666465544d32383d2b09c782fd5f9cecd5791da77550247a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEVU51789431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf438ead1633148a8999e0d9189cb835268fd321c8354e219df62aed0620aaa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEUE12175695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d7ea170ecf9f359207e557316cd190355c3e28049a64e027d50cef84285da2. 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/DEUE12175696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594fcf07594d6fde0fc0b9f2f0d08db0a2196d2324e7071e2e18d55dfd1fa863. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEUE12175698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52b4e4140c96a68ee4448005903c655d242cb3974c2a33ffb7b12aa638d4ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEUE12175699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb2a7564d74520ee84d04b4f60e89b213b23dddc9faae4e99b72c1aa9e06a6d. 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/DEUE12175700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8011ce90da9ae4af5a549facdd8dfd249beb2eb5ea65978de758188a3f0173. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEUE12175702.