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 0x9abff408f31d7bf12030e491bc6ff03eed77d68392dcad1d691dd9b259c3a6a5. 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/35182642-7f9c-4ddf-ab58-0f9c1715e77f.json and https://artists.proofprofile.net/proofs/artist/35182642-7f9c-4ddf-ab58-0f9c1715e77f.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 0x4aa186217050fc75daa63bf832207696c349dc42f374c003006062f139d90f5e. 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/BRWNK2000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762eaf41c837ae7cb7a7c85377effd0a7e6f1eb82abaa8028eb29d82eb6baa35. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRWNK2000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9444691edfd751b6309bd97bd84fc82d256677de01410998bdda8e902ee3c6d0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRWNK2000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a59e501aa994148ad952b6ecc2851a4477dd74169b3e258c8f2fb7827fd66f3. 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/BRWNK2000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736723c2956671d39f2ef8e711bb1960b6cab35e07bb66e4fd35d8e77fa040bf. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHZ42151108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5630b8b89022b0930f5b66863f80d23639220f624b6acb9951a9cd044a30169d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHZ42151113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d084411933316f38a652cbc8dcf58a8078df6221b4f8bc69c60aa9856045256. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:53:41Z), 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/US7VG2228731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad11820a1d4a7c61e7f2585879423d4ddd5f0148bf8ab0add960afb05981273c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US7VG2228733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33927655cbaeb9691d1485106f7a33866295fb043143e5fa15c8f18780b574c4. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/US7VG2228735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efb7466ee428bf6ea5a5182c9cf2679f3b57cde4517cbb5dd4ee489dfa0dd68. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US7VG2228736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce82d93ebf3ecae2a25cfbe44ba9d285c8b3badd6e2743640920ad7c57f3e61. 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/US7VG2228737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cdbb187acf9994b8677e93ec6edf555c86b76f824c9791d7cc4a80a3bd7c5a. 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/US7VG2228742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96406be7e087b9523167f99133c3ee7034e50ae9d3bdb1dc0a744291a8d96c58. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:37Z), 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/BRWNK2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473197f545c9af17396122960c868179ecb94974e9a1faa89f7799a42c141711. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRWNK2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67440cffd38952935fcbaf7af18ca4254ca88638556e593a4ca221a9c29dcf7b. 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/BRWNK2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150c106c5ccfc6d26127f6319bc4df6d3ffca10638346df970d82fc4e0e44675. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRWNK2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e5cfd1b72adfe6e4b1220c7fd3cdf4db89ea6d9e52742ecefb98848c9a7d1. 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/BRWNK2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb131ff61a5e2bf3132c8f54796da0faff980ea719676c28da0eff43ef069925a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:17Z), 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/BRWNK2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a166b346807aaa43639ff9494cdea517983fd386b33aee248f261336399159. 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/BRWNK2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dee75a2213a3362493cfe381e1020d1c4fd42b3c0d3e2313c0f4f4056e3c67f. 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/BRWNK2200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c995e0dc729d623465cb9e98990b0fedb9932ae223cbdc632ce2da2d70a71b. 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/QZGLS2390910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c29e53e60f06551d76bbf88047279533dea302a0db1a88d275757b89c60ea16. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRWNK2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7bfb37825e476ed28a0572ec5c288e50d4959e2549d4734a955bcdc3d1c9f1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:11Z), 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/BRWNK2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e0df180ec61e6bee32a3a567b4c4431f502cf3fe516c6d4a8459217e0a1cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRWNK2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3bb4ccfa7df9153015abe0007bbefb155b9fe0d762c23e88aee71ccdf9ea65. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:15Z), 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/BRWNK2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c2ca7c5713c1656ddace0edd4b7a9a413bdcb787083f8b1c6b15614b117516. 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/BRWNK2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f67a25d0f84853cd5bd2a48e1c5fa90d7b9dc13be2d7df02924313d4c5bb0. 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/BRWNK2300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d82f2a3c8eef7fe28f8dbaa2f5ba045bb79bcfd41d79fe026136151c2b01b7. 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/BRWNK2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07669517cf557be0308c5af13f027b8524c4aee0c49bc9570882a71f2ec6a699. 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/BRWNK2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef843c3a2882ac6843312a7294e2c42c4e88592242de0cc008814d38f7d648f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:21Z), 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/QZNJW2416914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8acaa955cbb63a682438aacbdba51792da8d9806ff092977f7349d034ed167. 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/QZNJW2416919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746b51272f5f0926a4e0131348e960257b29609f9b3fbbef92493a4e150c3b4. 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/QZNJW2416921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca495d4c2bf8c9a759fa2e267ca51a3d00003b2ddb7c914dcc6d38e9935aecf5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:59:47Z), 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/BRWNK2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec8eaf4ea8e93a12577560baabf6c23f9a0a87790efedf905c109bd64ca53b8. 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/QZW9L2415179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c06d206bfd66a3381ed42d16e0ddbd41094ec8ba21bd22e5934325c36fc2aba. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:31:07Z), 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/BRWNK2400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e3bd7fa6db70513d8636e2548e221f85ae3c32bdf2a81ba3febd11a643352f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRWNK2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290245623e6a793e6b7e10cd15d6e642b766daa864b839012a37e8272c480e2. 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/BRWNK2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa049aec6bc71e220c711ea5cb8aa752712fab105c08757ed61b7790f9d18f7b2. 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/BRWNK2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7feddb9adfc1bba694abd439f24f454a7f5a96c34bd40a3bfb86c5a8983e37. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BRWNK2400169.