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 0xc4a214c210350a3ccad574a66a9d479ff0a8d97e0613ff9d14d534e137f30493. 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/91e452de-e0b5-47ae-aa49-c2e32c2bd7ed.json and https://artists.proofprofile.net/proofs/artist/91e452de-e0b5-47ae-aa49-c2e32c2bd7ed.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 0x699e4d12d74b6ba5def15c1539de1850ba5d6c38626d8e00eb3b9eaa0a27f32d. 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/FR59R2358766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de0d3ddc21f0c141f233a22d98a197ce5dda293076b1dda34d3bb2824b760b1. 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/QZYFZ2353840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e84f41539849b2f730f8a7aaabd38c30fda1c811808fd6e101ca671e87581. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:50:02Z), 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/QZZ662315757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e9ad09a687703c870414a5d3c5305276fa63243264717e72de77db5a3bc9c5. 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/QZYHM2373458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f98a2cd7b14c21ba4cef27b1302ebe49e8ab3f3a7f378d5130672ad35fed704. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZYHM2373459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c1de7793fc761425d1fad05a999ee33b0fcc6b0d66ec2c7eeb902cf81b772. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZYHM2373900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c07b9cb6bfbb7c9c71f3658623e25e04606fb553eb9d000d40f206b13e18c25. 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/QZYHM2373901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6216c21c477f9f9f34c0e6bdfd837f082c94ac2944ef612b30e707c850857110. 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/QZYHM2373902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29e61c7d14ab84c88fb73e0555d2ec0d9d0bdc96e13715a261287326c876322. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:57Z), 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/QZYHM2373903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247aade21ce1e4c5c57aad2b09bf9b8de1fb232706cf41c50e85bcd4269479b6. 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/QZYHM2373904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2894456958c55dfc8a9f7fefddc3f2f7b53e8f300f4ff3e4d74af30e91ded. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZYHM2374484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d93b39848f69aa3699a41800683c641a6e01c925ab3642d489887e286bf18e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZYHM2374492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9507e4eeb511955a95bf36b722f631ae64ac865940451ed8f2ff917df0963. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZYHM2374882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87b6fb03c3a25cf8c9ff30757db5515108bb2d83a5f522fc13bf3cf97a35c39. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZYHM2374874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31842a2886f1b64800dc24e0359c9300995b0d35f536653549d022a78ca83fa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:41Z), 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/QZYHM2400794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680263f8e36c726d3d69d7c586fabc98bffb4fad31cd5e8cbafebb58cc3ee98b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZYHM2402365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0fc18dd6433ffbf2ca55c7451320d095854dcae7d59c9855424dc5aecab7f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZYHM2403742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61474ab6526999990d781678a314d4544b2556c5d1e57d27a3af83914351a89d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:21Z), 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/QZYHM2407862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb075425b9ae717f20aa0116079aa0f11fe86aace2f1c9c5027069822f177ce19. 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/QZYHM2408696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8845a6e59c0d5192d285b4ab70058af7dd8c23dcfa60504f087d14c34966dda. 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/QZYHM2415640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e57e725cf1650e5b082ce4034a04950564d647fc83fb2876758af14dfe1bbd9. 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/QZYHM2420095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a45678c9d0ceb8c0fc077b7c40aed387b346fe3eee0b8c00574a3eb2929fcd. 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/QZYHM2421153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cbf15128916b2dc47f14f2251fba06e4df82cfcc6071b88397a58da265fcd0. 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/QZYHM2421287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2795c0effcd7ca1d6c2a13189d9f65958fa142bcceb4f92fc4aaecec3295608a. 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/QZWDW2431103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53bc94f4aa98876376ec7baf06bbc8dd205127e739e5b4e667e757bc045e146. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZWDW2436662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8364a1c70e31e70651b3dacfd857727e799ab72afbeb6d3ae924d8c7d1f0db. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/IDA442402240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991f3795cfa33801f369fafa6a7dbad7c39d1f25a630d6ef83ba3c650e21d3c. 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/IDB772110253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76c063350394af540c9f4269f6856b102a9c2b616e3f2a575267f12570dacb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDB772110343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db1524b2b633efbe5cebe7cb8dcfa88b3b51b22ddd97494fa2eb20219090f3b. 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/IDB772112167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac4a6f1b9200049f77b6a1a80560995a7f59d5c0f52ccc3d4897566e14c0242. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX282559233.