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 0xd4a416b9c62bce14d0b94f6fda73d2bd3f882a04c21e79a9af9a88057c4a5ed3. 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/44870a39-f8d8-4f2d-a9c3-0d59a6c0eb16.json and https://artists.proofprofile.net/proofs/artist/44870a39-f8d8-4f2d-a9c3-0d59a6c0eb16.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 0x79b5aaeacdd5f1b9b7f744f14c0f04396fe15fd570ab2d4bd06a2ebf65792d2d. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZNWQ2070119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6411cabb112a93a5c79fc1cb07e02a934d87ec9eda625ad60713cdbf31e7e4a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWQ2070120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd731678fdf3543d09caaf4f04a9efc0741c6ce306962d9867578b2d1c4394. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2070122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1876a68577bdde44480dbeb1cb69aa4df8c64c2b3bcd36822f1c2a3146c8907. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:28:42Z), 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/QZDA72243166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6592002d5d38b4e67338b886b4a94540e0281f8f7002c182f2f6c2dea93f534. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPLR2269783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb66192a06bb0992191db3b386aa0a1b00797765cff6ecf034649fd320118194. 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/QZPLR2269784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269b3b6c1b8220d169b45ba87b64ee46071e170f05c5343cb89ead956175763. 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/QZPLR2269785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcd1f69f11508fff53db5f7551306457e9f7a992c7a145b0146991c969876fe. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZPLR2269782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8346b3360bb4442e03060c99db6efe700fde92bc6af6091b67b653e408541d80. 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/QT3F32421500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e387dc0d78a04acac409fb06a84e16d2564f4554442d6d08fb88b404c72cad3. 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/QM24S2501832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a9b1f26e4c4f5076daef25e432c4b961a88ff3a7e5dbedcdca370d14d5030d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM24S2501831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008571c13112586edff632d1806f636d2b87e7fc3664159d4d94a7aa07004997. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QM24S2501830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9119d98007e76610be949add6a4494ff9c6a478c08472056c25c986cbfb563b5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM24S2501828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3842541b9930e7a9edbc600f1f1d8a42b7f9c2f5dfdc8651d25c85b15eb8c2d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM24S2501827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76ddc613b0a7623614d2ce352a1f10e154a65dd0a76ed9a3f0d22c2816cce2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:08Z), 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/QM24S2501826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd254784d1ae73385cd67bb3a47877a8090267e01d1392d4df4813b4e2c1ea8b. 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/QM24S2501823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa8340dd33ae9d4bcc47354b486b3b8c557d682c98bf1a6baa5cf0c79360e3f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:29Z), 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/QM24S2501822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e8e3a561b6b574da9fca95eb52f990065731632be28674c8541ae11d9f74ad. 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/QM24S2501820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ec457ddaacdf116efe429f8580ebffb4170fa3eeed3b20a059f02ab3a7f956. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:11Z), 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/QM24S2501819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4fb0bb01d0f7155bf8c26b75a3e1e6a70cbfd7ff7564859826dc98f3bf7a71. 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/QM24S2501817.