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 0x2d8d288b4c0bd962859a0777b36be10e31b8f9aff7ccdad6c0012f0b609da97d. 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/e1235c92-cc4a-4cd7-8a16-99e2efc1e790.json and https://artists.proofprofile.net/proofs/artist/e1235c92-cc4a-4cd7-8a16-99e2efc1e790.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 0x6fb75506b0857fd2f0b57657c2a6316465c87c36a4cd2d4c03a6820a3703cf5e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ42281699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed7ae18bb35d24a633f69b9ab20fbdd88feb1b57857f8e94d85ad81190078f. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QZFZ42281700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a09df750aff108ada4d568fe744a9482d52670a602f9cbde3e5b0f639c9f49. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWU2289971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b16f9172ad75d51fd86aaf49d02cdcb5de06642280f21866a391fdacb57b834. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:47:34Z), 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/QZNWZ2218274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2975ed6ff59984ae3a21128a2be7c247ba51b71da6241e2f6d53861fb78a57. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:35Z), 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/QZNWZ2218275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618ef00ae9c1b5f964f79369543b933fbdcaee12ffea4914e32349969d2c68fa. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:28:40Z), 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/QZNWZ2218276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea361117afc3efb14a7f1da71e743429b699a3fcf3ede5a115add99dc1d51f6. 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/QZFYX2384698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71b75e3d058edf66688e5e7c5aaccd09ffbf4d370fae65089ac425a3e685fb2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMER2374291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1651fd39794636928e5b794ac51b64d85ccf93ffa4c19e90fc53bdeebccd87. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZDA62432533.
Zvrhlá tucka káhyre dojdi pro piko - letní verze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361249c88c84d4d649fd3ae4651e74afbe96e451b91da8b82ddaddacecb814ca. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZNWU2458596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce1fdb744461c4d86f3332ec54032283e6fbbe7ab9b6118fae8e04410f05442. 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/QZTAW2461685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b5b75785c33be61e75adb32e018315f9b0002bc2260141401feeb27923321. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZTAW2461686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6534851f75aa72a52374aca8c5b279265f64e20955c393d4df6c6fa03f50ab7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAW2461687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c80022d5500988f8f0edd0de3901e8bad71e290bca0c0c5bf5524eb53802d. 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/QZTAW2461688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0569b43ae883332822260bdfa034d5c5f9be9a62f9e05435d22a429d5c305. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:30:32Z), 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/QZTAW2461689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1f0f4f4add89867da2420e6173b0db1288845667d9aa6750dd1f5e6823a9a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAW2461690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751298faf909fc32f8b8796e758f658b1b85b0c377050a483e73d72e196af6a8. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:14Z), 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/QZTAW2461691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a20c9d71f8c93d7a13111c388e2a6f8fcf582ffb8511c0a15459be4886e0c5. 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/QZTAW2461692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d63b8f9b05ebea7a209952e172311d501e100e129f9256daa9d26ab4382d1ca. 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/QZTB32571786.