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 0x42e7ebdd9c89e59a9ba3211eb541ae07d29c5fe6cc10b0bc1b522051ae622105. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40007769-a0d4-447f-a778-59f8c7b333da.json and https://artists.proofprofile.net/proofs/artist/40007769-a0d4-447f-a778-59f8c7b333da.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 0xa4e7cac9cadf05a04ea288589cc22eb8e341141246dda2b247e0c7c33a042c38. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEN582300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8922dae092c8fbf3c43ff1f3b6a7fb4a0406c7b921b8b84a241059e2d1dfbadc. 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/BEN582300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa527a0baec6f69a71cf34e135dd65b7635f9cd68ec550955c4ae69b36e79ad19. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEN582300398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab8bd8170fea4349372339efd407ba4e5991214a6a63343d83aaf2e10c22d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEN582300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1975bc41d4bd1813c903348821968352764cac5623bde620963cda37fe19d60. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BEN582300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d0b6b5f3c19cf789d64b45415708486aed9d0b324291385e2bd3b0992810a5. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/BEN582300395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7144bbcfb3a6a9d95fa0e8e7d832a1f5b4dfd862d6da0962a0a8b7fe7f2016b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BEN582300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005d690ec12985a3935db59c89246cf0e8fd67869934e3bc39cd8b60fffbab5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEN582101024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690088ef976492e4e3e1ba1634863f68e66a6b8e7bc15d20044d221849982367. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEN582101028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01551045777f384db08dee5cb8ef2107994d41a5fd769165f6488aa66006c581. 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/BEN582101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25c1b2c85bb77a4632f384336c21f66531c6ea42e9a7d6b2ed0ca771e33356. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BEN582101025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f7e87de71cc207222978fc24ee40824154eb61ac93163946579b607a943c74. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEN582101026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adceb9f8e0e8e6ce558a65516a071b912cb0a96d895b8353dc7c1ce31a84178. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEN581800524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654adff00127c84f7cc1323ee30ab549159ead82f804cc7856ae49c2cd462a8c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEN581800526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c18fbfa5f5b68b0c653872e7b61d5206352eb4d9d9c65585089e69e693933c. 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/BEN581800527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e58aa8f0cc4325191c645c6dff60c16f429dad043dfe1f94898e6d26aa9fb7c. 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/BEN581800528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927f45ffc9d937b961f4ea60a3f99a295f8e8cb0c77e57b79f77e9d37d490da2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BEN581800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146c578649cfce30a1ea65cc22d5527fde26d48dd6367a8c8cdcfca3277f673c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BEN581800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed8d29f7d96e0409bf417c9deeeb47db97216245741ee6f0f0cd6815a8f85fc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BEN581800530.