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 0xd4b280c43dbd0414aa769d698863b8a72dcced975e28a490caa632276dca988e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/514b53f8-4fd8-4cfd-a4a2-cc1d7da44bc3.json and https://artists.proofprofile.net/proofs/artist/514b53f8-4fd8-4cfd-a4a2-cc1d7da44bc3.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 0x3d8589c50986233ec8cf0469250996847994de6c92805963f4ec811bdcc9d9d0. 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/FIAXK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309b9af7b9ac6ff40ee9bf8c077142d25350687f82e7f215ee3e7cd18ba61ba. 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/FIAXK2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7929b39e72cb0764c551f29306357625a31c566739a0e4d94a9dee147adf808. 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/FIAXK2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554031a41b28acc81d9b29f8290058c4c40c78c292f6c2bfce2f2c4433c3167d. 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/FIAXK2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cfbc43fbb99b80490c2ab034e03565bc23692d4b06575184078a7557532753. 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/FIAXK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17680b4bf929628c88d2c93ce257a7d4b58294b5ce58f48700e7a6a894ff1d. 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/FIAXK2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc1a49d2ba88115144a2b0b08bdeda39e604a0da507f5b5914ede5115019e4. 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/FIAXK2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd300f6eeb731bfc7421061a89cca62c385cd0d3fa996fefd7b25cf9fcaae9b9. 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/FIAXK2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006fa74ea483f3e588b5dce878c8228a38d6aa610cdea24de4a0e0820bf91d32. 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/FIAXK2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced2435fd60d30436c12d9f7b54cdbb09c9ebb5024a8cdc2b588d0e6edf6215. 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/FIAXK2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef127f6177c8dc65088a3b3d4d107cc12bc75ec43bb4e8d1ed09542a4de2ea. 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/FIAXK2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a10c9290f6851fb608c28f99c0cbb223ff41936cbecf5245543bb814109afa7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FIAXK2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b26ea48ae6b491d447c7c7159d7723bb453e6eca32f01ffd751bc23ff24fafc. 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/FIAXK2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b3e21d4d200609cd230e50d03b7e86e01ca0083409e68956d4edd4d0d833ac. 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/FIAXK2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee2eaedf2027e54a0f245a7f335143f76e6520b19015c7d896fd88e1b57bbbf. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIAXK2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea05ed1da2a9019de73a6de4264972d005d64c2a98375d42c17eb41039419c6a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FIAXK1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f8f6513a5283ba5fb46d3fbeceff732cf65d6f2c3858d49db2fa4c05ac9df. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FIAXK2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd05e0c193f943e7d916a771d8cc3fce7ea6c42045418d5d054b0144ee790d6. 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/FIAXK2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc117b5c7cd04ba21993785589eeb06e345ec3d65ea019dcc2e05a9bbdd441f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FIAXK2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea39823836a7753c7d4ab3bae1fc6f6240c8816b2619563b3c8818c8c7d208c. 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/FIAXK2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0f903870126f63dbdc38ba59d4ff9d03585da604608dca5e1f871aa270541. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FIAXK2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6171179fcd7129ebd1e35c8fb66a593809b14c0dd0bd264afcd7b40deda5c2e2. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FIAXK1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44341e739799b6a8e2a8c0b9877ee6bcfb914ca38f717375b16c81ad8f6d92f. 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/FIAXK1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1006619bdf639baa86556a7932f5433989df81d446bdbaf042ab1b803575090. 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/FIAXK1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e90134627a8f2225508b5b6db8fcccbcec5efa636e8b96c89328e2219497691. 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/FIAXK1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a29da898c9443d27d742ddc9a73d26cc4278db3a4641b929b3774f63a28e0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIAXK1900005.
En koskaan (You Don't Have To Say You Love Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c990ef8408c361832afe6d8f5845c60db05c7d84097bc65c5c702f1f65b8624. 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/FIAXK1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f667c38d98e4cb62448a74cf587c0a337ba21b62f5fb2bc472c909952f4a7. 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/FIAXK1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d750dd9ca28b414712dd2dc4eacfe2b448c964bff953f7ef71aad7f6224bff. 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/FIAXK1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8872403e1841d605b359a3d1bf0ec0e7952694917da4a71627b9727cf75d7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIAXK1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced2435fd60d30436c12d9f7b54cdbb09c9ebb5024a8cdc2b588d0e6edf6215. 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/FIAXK2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cfbc43fbb99b80490c2ab034e03565bc23692d4b06575184078a7557532753. 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/FIAXK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006fa74ea483f3e588b5dce878c8228a38d6aa610cdea24de4a0e0820bf91d32. 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/FIAXK2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f8f6513a5283ba5fb46d3fbeceff732cf65d6f2c3858d49db2fa4c05ac9df. 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/FIAXK2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea05ed1da2a9019de73a6de4264972d005d64c2a98375d42c17eb41039419c6a. 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/FIAXK1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ea902e5d5b3835b76fd7c4c52b5545ce8e10db61d888b7181986286820daa2. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FIAXK1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cd53487f61347d8c41cfcc2c908b87aa128a4803f35382d95d68d29572345b. 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/FIAXK2400001.