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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5292bc6ca6b84bdd32b55e4a7aae7376372a85bfe79775bf368bc3b6c7d0b78d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eddabf5-f82e-47bc-9073-a4fb436f9d16.json and https://artists.proofprofile.net/proofs/artist/2eddabf5-f82e-47bc-9073-a4fb436f9d16.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d237d4623d06469c98e3b695a60acc538ac88bd62ba5b8c2910bd06e2a2e4. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCAGA2233969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388b1cc0820a77e72f099a4841f493d3e3015a71a01c72063c8a3cf01d38b8e2. 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/TCAGJ2210092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ffd8c15e675d9819bfe6dec896ab04af413e02d72e987ed1cf7c9bccd9ce8. 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/TCAGK2238246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca814da627c507c20f91e07c22221880732ff0c013821d74d81166f9d7da9580. 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/TCAGK2238264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddfe3292a7bd25501f86861531f7f3c212d442253a1f1b245b4cc2801f5cef4. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TCAGK2238272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe853326e60829eb8606223bd03863f78a246ead73ffa20205ca8ff69cf1a797b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCAGK2238283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3864ddb6edab24dec6a459e0a90c340511c2f58391dd8f481b5331ade30ae71f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCAGK2238286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e831b33f45dfbbd512fb700861711b9d9809b8c7b952a80ff4df2e4c8f38beb. 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/TCAGE2216848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b43ac54afb6c177f7ca4ea1740574d2ec57334587072e59ef364ed3170d4e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCADH1737693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422d1a84bbf89385898d1aee2875a2787eb091d638fd4af978daba0155dba5a9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCADH1737694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e59d058961425aa8bfda3fc846952519c03267a55ec423d1385caf00a794e8. 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/TCADH1737695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec4bc3a899bce70c7a5340d1bafb0ced8387ed8070407ba71b309b83b27173. 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/TCADH1737697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7319a543aeb25285acfed8131eed629d61267b1723ea0e56761e0419591d353. 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/TCADH1737701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3fdd32fe9c250329076edf217215f63765df833f54d2ef152fd3bc1bb338aa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCADH1737706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1d6c3bf53f3c9d518d2a34d085605d8d057a4a87b471705dec66b52422d0a6. 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/TCADH1737708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b7cb3e9052fd1f5ce3e02c6ac33252e5d95852fe22884d47d78b096863638. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCADH1737710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e3d83be0a497b9a3226a08659e475135737ebff6f8cd0091bc98c472f0e610. 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/TCADH1737712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e99f0a090c4dce239dfb3fdcc3be7e89163f0351523ed9150016f522f812a3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZW9K2364966.
Bewildered - Soaring Man Revision - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052cf129a31484140ccae8b84b1772f67d84391c1d76b55a83139de052fe782c. 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/QZTPX2367127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d237d4623d06469c98e3b695a60acc538ac88bd62ba5b8c2910bd06e2a2e4. 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/TCAGA2233969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c8d9374c81342cff73e55ad07c815f8dc5bb57f361a8f799a7a33619452a0a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAGA2292352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8777bb063a26f4039d893c6657a16be3b96d17d4924722b665bb94d82ef88. 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/TCADF1781197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9ef9605b047edeb2d79bd327f6d64487e809a52004c8d671111317d7e83a45. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCACY1704882.