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 0xb6f15415c2bbea5a6a3e68aca3fd2d50a39f5ff09849ec3bbbea4ad7cc92768f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a711d11-2d1d-4615-a84f-4b0f9f2e1dca.json and https://artists.proofprofile.net/proofs/artist/3a711d11-2d1d-4615-a84f-4b0f9f2e1dca.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 0x241c154d7137b19d14df5c56c9d62bb79a2f1121af4baa23127ea5d3e24455cf. 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/GB8KE2052028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f05d8413f6b43e895a53b782de2cb9713f5cda07b7bb5ff54c82007cdbc457. 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/GB8KE2056362.
You See How It Spreads Out Like A Fungus - Fiesta Soundsystem Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa7c8fea504aedee1aeee52161a828b67a82031d2761b65e4d2e817644a19e. 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/GB8KE2056363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531fbf1849ad34da84044a78db2316d967cb2de3251a75ff4dbae610d7caba52. 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/GBKQU2064403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761fe14a7f9bc92d639214345864bdaaf5ffb14309a51619bfe37784906b1650. 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/GBKQU2064407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ed0bae87319d920c0bc7826d266449469c584a8ca2b125084a1d4e2e11517. 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/GBKQU2234107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c84f2ab0434736b7cee007dafb46fb9caf971e5ef9a1c5ab1ace2cb451f6a4. 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/GBKQU2234109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aab6fbf113b96310c0308ba702effe708b14e6b05437ec40c47d9d29a9128. 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/QMFME2355890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6930b639b507f1aa80c895e815abea7ac270c6f6e0f748a5f157961cea5d165. 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/GB8KE2417761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea51aaca2e41374243d6fd0c25f6dc3a3af02591eecc933466f21d80ff4a659. 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/UKN6K2301721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0829f74758c7d82c4dd7c2621c498569adc56ca771f26f24dceacb04dd401815. 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/UKN6K2301723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a9c508ba7705df880b66178e0b91f6f0aef79aba7b299a930e49a54c49abb. 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/UKN6K2301724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49462c892d2a03f8567246ece3251d1cf8f63fb8da8d17c4d78a22a07132dbe. 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/GB8KE2327180.
You Are Not a Badman (Samurai Breaks Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672237d1166f57eab3914ea89ae1079b8007615aed049552e8bb7a8f8ae03542. 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/NLCK42236347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644290a1eaf9d66318f0c1e3406aa72392f9b2e986358c2b496f1c8b160d0f7. 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/QM7282350715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce91a796cb4bbf43c882684b2665cb5b53a88c734179024ee2bda394bd28884. 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/GB8KE2304435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db68698794a45fe3aabba5465ad49be4160236a99cd4861118a50fe751519d3. 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/GB8KE2304436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9864cb05b20ac0da74d8e00e8b1301b698d90587867d8ffff55332008d5b95b8. 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/GB8KE2304437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317434ee2ac4a9796820f193764b68d7c1dc55a01f4fd13367facf51c0395f81. 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/GBCEQ2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e24ffb111bd5aea849c6e1d5923f7fa4519e7d36a53bfa4966a4376b6e26c7. 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/UKN6K2201903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f19c64795360e73878a07bec4b03c72735199eac53e7c030fa2be715c1cc4b. 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/NLCK41088132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406b075dc47428738f5f5bf4d21eed57c12c746b5ef97251a5b973eb57d78ff. 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/NLCK41088133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81255e5a6cd21b0d116ee9bea86f291fcaa4c88b3e6183aadfbc080adda257bf. 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/GBFG92000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c6ac9bfaaafe343b9e918e947c33094d1b4e4af9e31a12c35a12c79deefa8d. 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/GBFG92000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8acc73dad9b45108f70e43cacf2f81e98b0abdfc6e422f830f702fad8567a7. 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/GB8KE1952705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f4984abac5a7263ef950b8ea7e63463c5602c766dc4e2374fa01e2058e083. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:38:08Z), 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/GBFG92200129.