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 0xfbcf84ce20f492e1af9b15c72514e75db0a513d6439538adfe60f699831b7c88. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3cc0f94-4358-4d53-aeb8-f10d218b0ca5.json and https://artists.proofprofile.net/proofs/artist/a3cc0f94-4358-4d53-aeb8-f10d218b0ca5.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 0xbda237978cff6c626c97bb78074d368f11157003426065507a989fd6881c0454. 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/GX4R52309050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552a905d129a13f2ed4bf957c298419c2ffd0854e6df161b707616ecf5836f15. 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/FR9W11710602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71254447c973d9fb88170b37143174785f7908d729d6d657db252c2c869e9e. 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/FRP9W1600760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86dc5234b5b3c2cea55807bb225a90eb921cfa025a491a900ae485111cc18f1. 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/FR5GV1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e64f800e008f9019205c59154bcd167c94e5845b83cb25565c14e8a8f49f1ae. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR5GV1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a28321b4faee68bae1cc9077964e955d87d95e58ce2dafc347f0ecf9ff89ca. 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/FR5GV1400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f0539e24a603eac756f7b83e6069a9b56714bc861cd103bc473b809fcc1ecd. 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/GBQ6E1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81552ec4889b531766430ceb6a92769c81786ee5f0494fabcf1437eab6cae9c8. 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/DEY380980290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc9a2d6afa5d2818b3e36b29ab5bdf4ac31989b63d828a43a7b5789fd3d552. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEY380980297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8fb346c2b0ae15e804be0dfb8d1c2dada8ec0fac5eae1e0f5bda8cb87ab3a9. 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/DEY380980291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b8033f846478869ae5b7006beb75de31bb4ad6e17fb50ccf1fc019497f9e0. 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/DEY380980299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1de26949503d8edbfd44df3a21c3a0e8666c29d711a97227e9ffa5fe73c9788. 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/DEY381180353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26141a66ce65fa44e500a9ad4ca64fd830c24ae2c0084aa0e04ed64ef62327aa. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEY380980304.
I Am Europe - Claude Von Stroke Take a Trip Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf4d724e62c47bfa1536a447f53f6037255a23fc5c37afa467981425132aa8. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEY381080307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a46875c729851d0e1e4e197164b0891b67fb56c5d733ca5067150ba227423. 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/DEY381080325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dec2a0d9dd82b8aa20529117592e18ecddb50c72f00331bcaa8cf3a7f126da8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEY381180354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9233528039dfbf8af6e1c02cd742ecd287a294e1d8e6d6a3835e4d7594677aab. 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/DEY382080664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd545cd805021c9edcac17932110b61e8078ffeb8e14e50b54064aa00aa427d01. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEY381080315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e80cea8b06a985dd39bc6c40995626d4a01c263abe37caa4d068c062257d7f3. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEY381080318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d527b0b093aa279d881dd5fe061681cc7de99e1ad850230d6154f0af9bfd9a. 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/DEY381180355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57370296d73b60824a3c48c67ec0da46bae3694605b6db201f51ebc696983657. 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/DEY380980317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa863671594954fcd5c2bbd8bf13564cdebf9a217a596332ff77cc72d2c54da. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/DEY381080308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab3a42767f2bd1fe0489fbf59a5537d9bf0ae3a0ca200ff9920c3a13371d49. 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/DEY381080326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e0a2112209eac31bdf64fd463a4f8f98814bd26ee60e202695cb4e7797941e. 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/DEY381080310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2ac072f5c06421a0f874c8522109fefb853133d387b5e73612d001bec2ba2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEY381080328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59efe4db4d6fa86d156762c46b7bbc303c78945303ebe4384946e29c0eeeea0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEY381080319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cfb373891ce65536561d90654cae39c1d2c231128df0cb169a76465f5978c1. 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/FR9W11408904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f15fc9af14bc1dfd01fc4042798082186338a199667b10ab746d31463249b30. 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/FR9W11404899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522cba8b3b048d381ad4b3ab891e3694ee871fd127fd804226f10e6428af3fa2. 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/FR4R01300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ac9b3db45dfab9aa8dfc3180b8e3aa3125f0b8a4512b60d119244b9430179. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FR9W11413894.