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 0xc011fc1d631d03ade29f4dfa16024a8737efbaf68c391bb213a92c43150dec10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a52c0f34-1ba3-488a-b911-9440f619221f.json and https://artists.proofprofile.net/proofs/artist/a52c0f34-1ba3-488a-b911-9440f619221f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laffy Taffy (Remix) [feat. Colin Hennerz]
Laffy Taffy (feat. Colin Hennerz) - Remix
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 0xe139be69576397e00444b4874838d81a0b66633cac62d1204633b27e8121365e. 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/USUYG1378995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7c2479609ede831337257df300bd10efa439b7929adcb245ee0f91582f9eb5. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:12Z), 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/USUYG1432250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3818cce0d99c536ed632d70b19cc8ba87a6a87e9232aec2514311c78a74ce35. 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/AUMEV2361181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1bc5bde932e56f2b6a61a34f24daf0f27cdc740e3b7747096f87ad6639abba. 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/AUGBT2333041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdef0420864908eb71a7dd902dbc42ecb17948e276caf39019005614c2d6d340. 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/AUGBT2333051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e1fb7b7d89fdb6a96df0a5a1195852c4f28d5c1cae62c5562c390ab849c06. 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/AUGBT2333075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aea65fe2104ae5c81b15f709eeec4fc4c576d43d534131cddf30c4b27828e7. 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/AUGBT2333023.
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 0xd513634e91e0e143d06003b688dc860a3ab907817e5531cce68314d6d15c380d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/AUGBT2333030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aaf326bb53d8b9a54b99889bea62dc20d9e493f6e1afb6c476fd8cd9eb5837. 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/AUGBT2333049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3a52fa3c40810c203fcbb204cfc902fe44a11278bc548ccef1b731f0922b9. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/AUGBT2333050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ac38d94bf9222d53ee90b91dc19b485b36153cdae08cc6ea360ca5dbf3993. 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/AUGBT2333052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1f2f1b8ec0334ef571f2f2f6c9f8290385eaf659a2e326c930f0e009ad157. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/AUGBT2333096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc139fc0a602c43bdabb6bb6d77060d50b2aaf29619bfe9bfba98399a0beac57. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUGBT2315531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3252a9015e6983ce682180095a0a6daea915fa785da0f7ce3171c9e31672f8. 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/QZ9452300053.