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 0xb9b5c16e02524e65021f4ade4a9d26f4f83ba65af6abccfde52732e6f5e4a5bf. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/791af046-11bb-4de3-bec6-a8a0db92c93e.json and https://artists.proofprofile.net/proofs/artist/791af046-11bb-4de3-bec6-a8a0db92c93e.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 0x0b7aa16d441ed2083d2583e42d0c1a2ccf4df7c329aaf9342be2d94aacaa4995. 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/USRDG0110094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347c2aa7de97cf6fdc915648f6d8390985a3ca72324304ca11d4c33d523e511. 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/USRDG0610449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c344175b04325c4e13d25ebe158451daf2c2d189b657536f3b6510a7949e868. 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/USRDG0223362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ee83291bf7a589b563f1981127474df852abe78fda541455103c940adda18b. 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/USRDG0223053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d547e5b9e59c49d5e3713b17793af3271fc7e113a843903ac49228fec787cb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAM460415295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c31ca8ffdf67ebf7686b0d40f1d103b59d26cd0fec91c76864a8da78bca910. 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/CAM460419551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7792233d2e38b177eb55535176069852646720e8ef3a48fbfbeaf43c11c1d2fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAM460435652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0067248be8b7b6d2ed5858507b597b453a1b87ff1855f3ff5c5947512c3aaa89. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAM460418624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb5cba3ce2dcc711caa505fb0de61322011b2b378562b78dbc3b7a4da89fff. 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/CAM460416100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9784b2f25605f245609c0f99f947e451fee85e488e87ecf607ac3323ca9f723. 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/FR80T0500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4456361afefcbfd982aaea8f7cadc99fd28d04cfd570a87025b108b87169dbe8. 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/FR0W61820115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bfefaa9843afb6a2e2e48c3b1c816acf728c7fad782cba1f2095a2550bb056. 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/FR80T0200478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2228e3f3449658a44b12947c7a0cd40b2457e16be9f0e9c56f1febc03537d8c. 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/FR0W61820120.
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
Instrumental Covers of Popular Songs from the 70s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a6addc91db64626781287bc9870ac7c69aaf98a1734b50047ac0033add3c0. 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/TCADD1730427.
I Can't Live If Living Is Without You (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736b9c898630b75e9647f5127635a193a6ee32b2ad5dbada72c370ed2088a446. 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/TCADD1730431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d412a65fead41cf327d0eb455ffd624ec16b7a823ed64f33ffd22f34e76f281. 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/TCADD1730413.
If a Picture Paints a Thousand Words (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895b5697a988edfe86fd5b41b3dc6dc8b18d7b4c538935d0b7296e8a3c74209. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADD1730417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962df459b66ba3007d98849bb03e14bcd8264b941eab73a7eae4212e0222c5c3. 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/TCADD1730418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b607d37366dce12c69260290a5ee556fc5082b4bd0a598195e74d5f2dc0dd9a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCADD1730419.
The First Time Ever I Saw Your Face (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2327baf5e5f5472f67b69894991e72b40bae6655ad42e3c7f39c28d2ec6daff9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCADD1730425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6cda4718d9695b793d69cc240c0dd55cf0e9efd7688a1d8df6869706448c5c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCADD1730435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18082835c022e0d1c61efa9ea769d85e1d03f6dc565422887ea46ffffccdbe81. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCADD1730436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bfefaa9843afb6a2e2e48c3b1c816acf728c7fad782cba1f2095a2550bb056. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR80T0200478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7389a2d13008ded36f2c9c072ee4eb082221a9f3d4038401ce2cac036aa76802. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRY510988779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2063409265cc9eb5e645625a66b05f41a52dffb72b9e07dc536eb15c614de3. 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/FR80T0200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18cbda9c49faa3183a7c16c5cce75eeaa4fa0a1a0e2d0ad8b1f5534ba6affd0. 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/FR80T0200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a177ceb24d97ad70c4e1b59fee99f35dbba25a90b9d58c2871d5c2ba9ea5738. 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/USRDG0610045.