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 0x4653e093f0a83e9412391b2b9a095ab623964d2de449e5a74e99b60951f9b7ff. 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/9e60021b-ddd6-41e9-8f3f-5c9fbacb0d71.json and https://artists.proofprofile.net/proofs/artist/9e60021b-ddd6-41e9-8f3f-5c9fbacb0d71.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 0xed6657cdba95375703b7bb1467969f10d47726322e3bcaa0d8b03a50adb9810e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QM6P41846192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16567defdcde61b08afd43e8056582f73771583abfec9ab25d8249a68672fb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFFG2004804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed6aed9ce9a0b0da7d4f5ff7163a54bd5312b169c6cb01bfc4ebd2028b8cf62. 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/QZFFG2004808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3623c362bddeb2d98d810988b2023ab84526ee426e0dc20ef9d38e61e3cf9f34. 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/QM7282005441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab6fba46eeba185425a147f4df5709b6ac812d4bfff5587e6f7b54c204b7a08. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:00:45Z), 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/QM7282005442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362de6f8b0b7cc428404147bf3ec6f9409431a637312f3776014a4534c177316. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM7282005444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e117173b8d6d44914559ae2b66c22af4cdd0e0c7d87537f0c8bf72032e92261. 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/GBWUL2108086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d17bb8eb0f87c0880c11666789bf3c3d5d71caae5419fbb3595a7a99b9ceea2. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GBWUL2108088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f98b6290aefe59aa8abf99970336bda6e516ef78800175453e77c41c9cdbf00. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBWUL2108089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7685c5c012aa4809beb7dab2e1787547befa7e85758de87a5092931e23744. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBWUL2108091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b846878968d4246a978472eddd7695e2596b0049ad5e48afa2e8684451af2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:10Z), 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/GBWUL2108092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b9bc64c1a5100460a0542f196b5553bf85e53a763bc9913b6cfa4edc9b9a5f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GBWUL2108094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923230f382758a75376597b4fcdeb1daa47193e97dcffb3b89a8d464fc2a21dd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCJPR2243698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e354e63403939a65cac64ca4a8b685261c0c18daa5deabd79aa28052e10ef2a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:14Z), 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/TCJPR2243700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f97ac2df6ed7e3c2b48806ee7b86826659b9d529b2777001de2479413d73290. 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/TCJPS2282055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78809b50396d5e7a4c2a3506ae4ed30229988efd3a956c9f1fa6a3ad2d995c. 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/QZNWU2330641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4cf75a43dec75515949a772eb401c92067c2a06031ed6669de2f800320f87a. 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/QZFYY2555704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cabf7e21cfd48f59a66656c35c55292a4b9f80cb4033f46fcc91b0514aebadf. 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/QZFYY2555705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7bf0cac47a40d06c1793ab435955e863aa8aa62bcd1c636524bcf6532f3102. 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/QZFYY2555706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72807dfdeba0c6438abb023f75354139bc7ff452a9fd7d1c8b9a81d5b1c9a9b. 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/QZFYY2555710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442659332a40fd2bed55f03d3b5f27000b3a5a0d2e68f6c128db8510cdad9f68. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:54Z), 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/QZFYY2555712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc329ee5ec374177fe6b6fed9bb9fb2f8b5eb8eb0a82f6b91186ab47144383234. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZHN72543849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee03dffa49ab92e8e899594aa0d48289613db38ae8122732919c12891eb17c8. 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/USA2P2523862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33929b01a94fd3bc3fd12adcab84554ca2bc33fb77bc2fa7dcb982a0c509908c. 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/USA2P2523857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d9a47b645f22ccab36f146f740d446317fe489b35a1edc811ce903b9e9c3f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEG932406175.