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 0xa8c606fb6ebaeef5edd043fd8ab2d7998a560d79f7ae5a6877833d7eb954bccb. 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/cef47b5d-b6e8-448d-b202-5c738e11c11b.json and https://artists.proofprofile.net/proofs/artist/cef47b5d-b6e8-448d-b202-5c738e11c11b.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 0xf308435a765b0a6eb80305ccb47371ac3e1353c7e335e49130036514ea9b7b99. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCACP1662438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d579019e4058d6917e34c5e9e06ee00c6f3cc6789d262f68341b20b85146d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:11:14Z), 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/TCACP1662446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0883e25611af69a8d7f0dd4488cbf131c971384ed6d33d91fe73b744eb35b5fd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:20Z), 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/TCACP1662452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1b8dea4fb0d93549b3a6cb7e8f9122245e8112d37c34b0ed6cf5bb0f4d1021. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEUG91700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201f970c0f2e5f0c5470181055a734ceb359ec1a4b83156f3cc137ebe0f5722d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:32:28Z), 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/DEUG91700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9173d7139de3871f648223b2839a581d5c424b3f1182812abbd7d5f3fb0c89. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S1951117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f7a944436db2fa740bb44d648fe7833ce79dd7b12f97bc461a278488e51d7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762026899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa155c2cc4c1160641427224eb6bce8bb7ec068c0d4c57778a8b09245aea81dd5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2122083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0700ec8ec2ca9a7b59225f042d8f673e5e0a09daa43356aaa24095dc2a7ab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2122084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b1d2be4a17d0cf22d7a77a7ec38044a7202ab269474700f1b9387e5f0fd31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR26V2032527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd21f74b4a83f8961b5bd2e83c62a399578a09d59200ee6f63c2013e2be16fc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR26V2043948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f7a944436db2fa740bb44d648fe7833ce79dd7b12f97bc461a278488e51d7. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX762026899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d718bc1381bc352ed4b530e3ce385d4b422e8bff43f2b3b228eeb589fbf48. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DGA062486405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7d472be2aeb96d653abaa2465d1abab6c7e2cb051f50dabccca64c7027b11. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRX452431982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302ac669bdbf1079f64699d9e19891607ce281bb29d8d841afa6192eaf1d48c9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0S2457731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c99c10e7ee183e4c1f8274192ba87035dd5000124a29d62085e451309bcd12. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:33Z), 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/FR10S2509298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb39e1eda1af5cc174b200fdfaf7043526465b262645975ad20b424c40deceb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S2509299.