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 0x1600033ac24b6016ea7780b78623f6259bee8e68e6dd46d3afee9b385d57cf64. 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/95a9bb61-e0ef-4689-8083-0c07d177f0a0.json and https://artists.proofprofile.net/proofs/artist/95a9bb61-e0ef-4689-8083-0c07d177f0a0.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 0xa526d7c47730c829edb93fd79af60859c807eb1262b0d15c06d781d87f692807. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RSA221816433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa5def770ad049855c498b437ebddf886afb3d9d8196f3a34ebc0970b947389. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/RSA221816434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc590551f69a0e2212b166cc8786dd75d772d09305b92f8f4f5c8556538c0c6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RSA221816436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e8458d6497c241031fd7af2b8467f41b4627cd5e4a17c21bdfa1d0cc73533f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:04Z), 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/RSA221816437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da41b33457fc578f617cfef0205f0904293cec2ccf74ddc2f886689b1fcced. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:38:15Z), 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/RSA221816439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574b9e06a7876239d39a70a77cfb1fa66dbc536ba2e0aed08038a21afa3a9cd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RSA221820547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bbdb9b03bd3d94babb2616f9cbb222755a7dad14d2998edf2d57d1ff77b983. 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/RSA221820550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e57287ca22be2d3635d42232612e5fe965c501966e98b12dd3a72fc361c17. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RSA221820552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3fe5ba770eae706af8fc82fa4b7da7234c802155847a9ba49cb7d9030b077. 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/RSA221820556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c5cc38f4923efe5cb70942d466cb49bd15b121ac21d1abc6bb4dca0fbfe72d. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/RSA221820557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f1160e8207311b7d447b08a4e371d7bd4da742a2a9bb71ce9706087ef8f72. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221820559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a30553ccd473c396d8aabc78a55400a949a009629d18738c3b5077cca09f26. 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/BAA052338039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4617b5ec932d84da899c54d76e97a8e180850769813c79f566f54ae51d781. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BAA052443946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd4eb1575f167f6b607f2b91d1f2ce85b2f8113e180930c29c4d8f88e4fbe1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:32Z), 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/BAA052443947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111484965c1733db978474bd61b7f12eb896ec822f626a7df6ff38db1a131eff. 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/BAA052443950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230793976982e6083c62151ad7fd5f8bb267ef4a2933ae6059a75bfc0f7bd24. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:59Z), 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/BAA052443952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e862ac5e18a71a40dabdda31e197abb2f0d70e9623b91b7423d6aa30b88f46f. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:43:06Z), 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/BAA052445892.