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 0x656bbb59585d66be79900cfcd31dcff58d381348411642262bb05deb24a630a8. 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/f19e3fb4-3042-4632-abb8-a72e05fc9c50.json and https://artists.proofprofile.net/proofs/artist/f19e3fb4-3042-4632-abb8-a72e05fc9c50.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 0xcaa765f9e48d9b81e88832b79ebdcb7810aa611c01c047b3c13a7b7b7e2b884c. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/TCAGJ2242306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb67664eb160f4c5af99140f6e090f509ae9f678a9f913ce94060487a3f0f0b9. 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/TCAGK2287307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac4bb611517f2201b175ad426163840f051ed041e4897309652c2a3e4ec33c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:14Z), 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/SE6HN2486776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c4e672527a57820b02574895b5ab45aec77545b53e484175b0263bf39cf6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6QE2440286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441585295f9aaff30f79b793ecefb682576ea3e9dba21dc232cc6eeeb1955372. 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/SE6QE2491861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5363f645032259df6e44d60d89254c27a33591979c75367c763497493173f2. 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/SE6SA2460004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae405e25e5c9fc63323d384ba24a62e94da920d1a1507e0690ef64b5eea7cb. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/SE6SA2496532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebde4637f0c7943d0d2353792010c066ba12f383d3fc5926343a6a4bc2144ad. 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/SE6SA2496533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d319cd63f20e82fe280a091f113ddc321af6c9197fbee71260ac642c023395a. 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/SE6SA2496534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008b7229ba0da5d6904bb45817d505a3d9512422e3fbc36ebab3b2d894ec3269. 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/SE6SA2496535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a25ac688855ee446dd38c46fbdd2d6ed23a35e2a322ac63c75119f24d30f4c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/SE6SA2496536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eaf3291f93605d51f69fddc07f6a250ad2f6fb93dba2a00724f5b9cbf7e97c. 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/SE5BU2529128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c96ab8faaaf880f977f95c691fac8fa4ca2d6bf71a79d5c260404e0d2f9bbb. 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/SE5BU2539716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5a4a2f077d81026732829621ac172bef3d315332fa3dfcde5653a3045d06b0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:42:30Z), 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/SE5BU2548364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3215e53bc4e46a68e560e15e55f87d1306e75ae1268dfe4fd39c05f9e88d39. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:29:04Z), 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/SE6XY2582903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a3502a1443374228660d7f35d24da0d2a0a91cdd8f18dad590bb986bd967c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE6XW2561057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c38fc7f262118437d8720bcab2af182189ca865960abb818e5ffe16243c383. 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/SE6I32505058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c0b58a4ee602b7c38cbb93a29768aad9a94d97755790cc6a22eff5e61c40f9. 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/SE6I32567421.