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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 0x1ff2e3484ed7945c1239f5736af92ddc0bbe05e08c5649db2a2d6722be5461fe. 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/425ce114-8399-4be2-880e-cc445639a934.json and https://artists.proofprofile.net/proofs/artist/425ce114-8399-4be2-880e-cc445639a934.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 0xb2eda18ab787632ed295cd5b97355ec55b66d809078d23625ea86338eb04c683. 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/ZZOPM2234281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a409767928a67735a7f3638ffe1cff47d44d46b79bc6a60f85bfd8b03fc24cb. 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/QM6MZ2270246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65b5de70f7c0edeebb896a4ffaf61772e425895bdd6047a43358700381f5c73. 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/QZGLM2234704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a5b14b0368a83b5c07f68f379e26644086c185cedbf9cf659e0a9a9d676b94. 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/QM6N22368733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac30fb6aba04bf2a57037d22cf0f05bc1b594359425cc478599194e496736a5. 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/BK4DA2406935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef7aa1cf185a36eaecf8a1d3935450f602ae00b915d7f4ca6a870c1fe9e97a. 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/BK4DA2402445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba76ebb1e5eec433ceea6e3139868aff8c8064474f42c8ffa13e0b2b0a592e2. 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/QMBZ92358108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794e5c65420fcab3ea078f7ebf409622e3e6dc7c3d8795775940cc6a768599cb. 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/BK4DA2311810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7957c05f04ecd7d46e39e4989b8d066e968b464a41773da5f6aa2416de91cd96. 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/BK4DA2310917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73a70bbb50f7c55949cb7d3f1008be89a59fb025e98968148d9b7372af97c9b. 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/QM7282396595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450be35ccf9489de05638adb1bdbd04a2a05bcf47b836a72da35615c72aa0aca. 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/QM6P42348552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee87f1eefb5049408da0c58a49f22bc6145afa63ac86062f87f521bd98cfc59b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6MZ2394506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee872024083a7a0514590f2e529d815329800fe819b11ae68d6c54d550ac69. 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/QM4TW2397107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f97a34d32a6a3fed24ee255121b382c8e1d81abfa31fe027f6b97eef12e1b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QMBZ92290131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a409767928a67735a7f3638ffe1cff47d44d46b79bc6a60f85bfd8b03fc24cb. 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/QM6MZ2270246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee87f1eefb5049408da0c58a49f22bc6145afa63ac86062f87f521bd98cfc59b. 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/QM6MZ2394506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f97a34d32a6a3fed24ee255121b382c8e1d81abfa31fe027f6b97eef12e1b. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMBZ92290131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a409767928a67735a7f3638ffe1cff47d44d46b79bc6a60f85bfd8b03fc24cb. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/QM6MZ2270246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2f355ae71af354802e37b901a5416e10698be68ea6b1e25b8ebffe386fcaf. 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/QMFME2228550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087d5ca1e8219d466a8c356cdb68eef67506d260b9623f7e8158140c9a18543. 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/QMFMF2228995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ea2658af18e5977514b72a51e94689c2e42327c8bb421d9c209868a2f54eb. 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/QM4TW2363697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9089c93a2f425f3e51aa6344a66f56606d1605709f3f136c2515da601b233eec. 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/QM6MZ2230385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afb4bbaeacf7375bebc1f5d9225dd4ead215b553ca11281b9aad8f274ec442b. 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/QM4TW2363626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee91acc4b5c14d14837b98e91970b22f0b1a4267c796924a5de2c5f0ece56221. 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/QM4TW2363661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ea2658af18e5977514b72a51e94689c2e42327c8bb421d9c209868a2f54eb. 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/QM4TW2363697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087d5ca1e8219d466a8c356cdb68eef67506d260b9623f7e8158140c9a18543. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMF2228995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2f355ae71af354802e37b901a5416e10698be68ea6b1e25b8ebffe386fcaf. 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/QMFME2228550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f97a34d32a6a3fed24ee255121b382c8e1d81abfa31fe027f6b97eef12e1b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ92290131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fb42bf8d513e80901cc5aa458e9235b0cce120aa7b338077419a3e402e17e6. 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/QM6P42223480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd0e4ccf5dc29f0de0d5b84211afcc6261cd0ff935d67e059e2a62b189a9318. 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/USA2P2200739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee872024083a7a0514590f2e529d815329800fe819b11ae68d6c54d550ac69. 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/QM4TW2397107.