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 0x12dc4be5b452439e0c8a43b8d7ce5c079bab91ebeaad314c411075c2f1c645e9. 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/7705345a-8279-495e-9fd5-6198a9034ef7.json and https://artists.proofprofile.net/proofs/artist/7705345a-8279-495e-9fd5-6198a9034ef7.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 0x6c3bcbfd90ae83658939150d4aea7d2316f0dbfcf7cf4a05d69b705ac6497742. 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/FR10S1943897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a72214dca02afee6dc65debeaa38681fb49b8fd6a2b99ab1b09066b36897822. 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/FR10S1938586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14691552f45c5e81a8f78e90be8183ab522bebaa9ab9c6b66c1e6547d0c358ed. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX762142906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc1ca1a85450f5a84ae811a49fe768230db883b57223b8ae616f7b1afc29725. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:05:40Z), 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/FR2X42260560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca63907d8165cd0fb8a23629077d082d8914eca0ef27f26e70760e74c321edb. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FR2X42265934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3c430a2ac9c5510e3a6af960737acbdfa6c68b0d746bf37f70378c6670d87f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2275178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6a45ec8d36121a55d0852858c81c16136e0e745814db9fcd8f780494c9f5b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:28Z), 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/FRX872137130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4b1d1616bb063cc45df3b63d9f35706a9ce77b7a36c20b73eb422152def888. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FRX872126186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5267e2e84ab1ad0f401bc94efa304b5d607c1ad6341a79ab5088b288a438b5e5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:25Z), 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/FRX872126116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7813571981f442055d41b298f09509c25dd380d97889c01aae1b26995dc536. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:14:02Z), 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/DGA0M2369583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf39b82314683b7d943d7f255581c5f33a5270935c5cfe801128294a29c943bd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X42442333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa417b52db4671b9c18c84312192eb055373329e4ddd930b2c5776e0c1153b95b. 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/FRX202445652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc063ba43528abad7f38ab59d2010a97021e312b1b93777ebfef3f3f34794e. 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/FRX452445673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796987cfcb7371852d9d10ed3b575978aebecf079626c3ffa0534cc213b7537a. 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/FR10S2543439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb865bf1f94df744c3a4c6fd79b2c3926935915820f0ba6292a1024c1d119429f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:19Z), 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/FR2X42514088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3a9bca7110110946e79c6142e796dd20b678d0a6036b7bc95875134f79197. 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/FR59R2521339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77663f81b581de7a71ccbaa52fc8cdee599aa5f2374e34ee16a9b34e725d8e1b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR59R2574745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c10f013a8565043683bcdc9af88a0409d2dcd918dcc083f8e74113c06e3f5c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:34Z), 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/FRX282546566.