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 0xb4d9be25e36664eff15927aa20424fe9ea962974daca02c8555fd581fa2e1cfd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d944c81c-168c-40dc-9ea5-d3e90a7584f6.json and https://artists.proofprofile.net/proofs/artist/d944c81c-168c-40dc-9ea5-d3e90a7584f6.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 0x4aac478fc27c2cd933866ea2265cb97fc9682d8713c08f131a7abfd000796ce6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DES232100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0865dd534c85d817d5c31f2a33991f8cea1279140343b07f0f7459a571e93. 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/GBSMU7889348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569f9fb6637c986c657e2d98659320ee4657edd3afdc22aac356116281c270ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYZ62500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a7a6d009e0ec79c98927881ce670bff226c860b4d0274f4dd1fa77448cfc7. 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/QZDA52534759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4281e318091d05a6c048b300292f4c8df5de0986f8636f6a495ec5e4166a66e0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRHV12400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d72e5d2aaed4b20a33d90dc93d6e322af83efc8f809246cca72a1c8b609db2. 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/QZTBB2333391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc73dd31a5a7b99cecd32388ba0c1dff190733d74c23b8669104b80df8ffda. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:23:35Z), 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/DEUM72300682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e31a163efa4d6359f283e70557ffc3c34f09ecfcca0a3cb41333c9df7d6c8df. 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/GX8KD2324683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1384748df81bf9d1be918932e90bb5181f39c181f171995b48533365af58c2e. 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/DEPI82218460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d50d462e3aaaa1fba87617f49de2e031239a9b02d685f02fa142188e6acb4e2. 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/DEUM72202871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbd6bc808671699823f632de4594a1c7a062284654e795c331fcc8ad141da7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZZ52170358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8fa9ac2d442205f4281bf633821d0652adcea34db0a8c6f73fdfc337a251f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS652295976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643d640f6d81059660fc194550b03d5b4444a70feb1159a4a717d2d03c808b25. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:07:16Z), 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/GBSMU8397829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a07331edc345e3f95e645d96dcb41abd1eb913bad00c8dcb70b8bc61eec4d8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAHT1700518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d5ed0b35fdaf52b2a06c1028dd00089cc67458738e1d8f38c257027e48649. 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/GRSO11000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecdc9850666e61d530198082f6fe00e7c6a13d393bcd7083b0fb44a2afdacda. 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/GRUM71300928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb9905560aa30af70c4ece7a41cf49076f45869e597c5ca8e6c00f42af3d82f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRSO11000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c9d74e15c2b85899dc3f17adc3579ab3ac10f5610304bb8d7de62a1494931b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GRUM71201261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59b3c5d9088b11bcbd15643cd3db0cf3f9d8324c2420a2e3b38a152a7a83c80. 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/GRSO11000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abebe9ec5843f9c4385c2473c23199521f701015abb3e67620cd3743422606e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRSO11000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e6fa910ec33be745478e97d72b59f923bd472299d526758a8b918a538a1aa. 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/GRSO11000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d5ed0b35fdaf52b2a06c1028dd00089cc67458738e1d8f38c257027e48649. 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/GRSO11000197.