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 0x5c9ecd204d516de53eef53bb4e7997859186c06ea6591e8fbeedb39bdf31f155. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c644e67-6925-4784-9617-d40d2cff7a01.json and https://artists.proofprofile.net/proofs/artist/1c644e67-6925-4784-9617-d40d2cff7a01.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 0xf983e6c26331a93964d99eff42c88ee650b925a5ed937e1eecd01ed5d61ab4a3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FXR752400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dff14a1dacdaa5d781baa821ee536f16e7e1116f75f4b13091834ee55feab89. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZDA72303186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa7f52c251c69c708c98006e531ee51b76b413b7b2a0fd7c4c5ef4a987470df. 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/FRDX62305330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc56f59f073f8e1f91560d8e380a90715cf09638d217bd1491c8746c7f51dd0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FRDX62305340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfad05dd39f84e6c64239013371980021b29c5666ac592b171255b290d967ec. 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/QZTBF2382282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8efb2b47fbf01e770fff90886549427a472dff102165654f4f6c75fde6180a. 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/UK34N1800933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2ad866a40136a69778add77594951f4d1f6b886d81f224156ff408b3dc7491. 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/UK34N1800936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc53ed48c76bc4c4fcf506d76bb3f059dc599d10812ad820acc03bed80fee8. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAIS2481128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79436276fdcf33cac027e5352447c86f3df6a5b01d5d8314cecf1d68fa31b824. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRR642401808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db327dfb9b2545fdb3341b530a9ed8bc7c47e4b3dcc07f0c1c730d5f478487. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DGA0S2437801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1df4061aef5e57fcded2bbdb7277ef7678e3a6671d05fdaf108e436f52dd32. 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/DGA0S2437800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db327dfb9b2545fdb3341b530a9ed8bc7c47e4b3dcc07f0c1c730d5f478487. 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/DGA0S2437801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002483124332cd4609efc314aa874c39856da0c37b2fc6b8e33da2d04d96d628. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0S2437803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a1ec4b0e4e7dea0d779f8ce775c6c6a6227129b007b112f84626d379726315. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/DGA0S2437804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a87b5b18836bacea987258cff22eef35f41e3a27d30770dceec088321597d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0S2437805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e581c0117317c876bdd27c7c44c775498a8b17589fe38d4f6545858dcd4057. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282566918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3ce4ed4cea875ddc5373a23d6c986cd460f076750a1f786b9544ac4991b30. 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/FRX872466329.