Daffy Duck is a cartoon character created by animators Tex Avery and Bob Clampett for Leon Schlesinger Productions. Styled as an anthropomorphic black duck, he has appeared in cartoon series such as L
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 0xc7ab39c94ae5d6bc59ab9a382c3c3bc684e29b73310c7a86ad510b635c6c1e43. 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/fe62c696-e29d-4dac-95db-69549aedfbf7.json and https://artists.proofprofile.net/proofs/artist/fe62c696-e29d-4dac-95db-69549aedfbf7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Space Jam: Rap Battle (from Space Jam: A New Legacy)
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 0x759474ea98727fbfcc0d77b8d8587b58f215b1b05e0ddf1854ef77f8b0b74fef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USNLR2100946.
Space Jam: Rap Battle (Crew Version) - [A Cappella]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2cfd27ce38a62c22a876001da2357923cf6da958ce1cc20d4bc04942d61ac3. 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/USNLR2100948.
Space Jam: Rap Battle (Porky Pig Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564fdf5edd26e9be34f4ce26f9c2da1767deecd2348a562255c5cb8609d3aa49. 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/USNLR2100949.
Daffy Duck Feat. The Groove Gang - Party Zone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a4922d11d3a0de2e209bd66116ce186c04240e6751f199642524d2bd84a54. 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/GBAJE7600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1590596077e405c2fafbb3f7dd9cb2da50b79695bc0b702314872ae0769d29. 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/GBAJE7600058.
Merrie Melodies (Songs From The Looney Tunes Show: Season One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dff89d5902c5ae9e7a66a435e43738b78892a046f4c91d7af323db01ebb2d4. 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/USNLR1100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7f67253f4d3c5a41ef42d443fe332159455b8c1456964fb5e450dcd3f42020. 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/USNLR1100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a714b673683c9f315af02a9cf33ee6030c09c95146d2ea230ce8034040c50. 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/USNLR1100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d41039a3d63d7f937893dc6831b91780911e213b781d9097529dd92d7c45c. 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/USNLR1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29f610eb888a529f2c14cbc9d60ab12223ebb93dbb885a593a92f249896cba5. 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/USNLR1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292119576ea14ff7bb08da874f54240a17377aea848aae04e3789077c3d07ad3. 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/USNLR1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c871d55ed53a1e7fd9def92af8249e05d3df1eff2982cceb21d8340b473d45. 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/USNLR1100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a6b87bf1a6032fd3b46d107e6ec2b2e88686fd2a7dbfda8b0de57a27ae6fbd. 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/USNLR1100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2535a2ad9da3a26a8d2533ceaebecb4422b2ffb74716ad2a278e62240b199c. 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/USNLR1100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf70f6120e641c0f91e16ebe4f746e1acd1549e9969813253b542b7ee6105e5. 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/USNLR1100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb643a8f4d4e3648790165f0f2f9afba0145693187779eaf7bdb32b54d607e6e9. 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/USNLR1100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27b2d3c661628b553a04686f1f11497726f4879fee8ea38c5d957e351376b75. 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/USNLR1100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7d496341a9d66d1aea717a706288f1ca0d420782072668dc01c9191cc9be6. 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/USNLR1100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f9dc274c947200fa7b6e62c80eb1cccbc83be35cd6e64abd9ec99ea113827d. 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/USNLR1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc613df2ae23876c170dd5aad09a91ec64e2c2ab5975c1a4997f38fb550fcbc8. 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/USNLR1100037.
We Are In Love (feat. Jeff Bergman & Kristen Wiig)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d216a99d873e08190c0bb9527ecc3d5fe27918c4033ea6c97194f6c7234ee97. 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/USNLR1100039.
Merrie Melodies (Songs From The Looney Tunes Show: Season Two)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6041d8f0d5acfe02fa23f4762f004a9be6cbee7c4b3623163b62ddcfe144b12. 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/USNLR1300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b0b1244ca16227c296b281c4b729ef3d30870a40c74e041e87fb4126f6987. 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/USNLR1300427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1fc467a86df276ab5d12d87644f722fff82e4c6b81217de7d63a4ac9aea65. 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/USNLR1300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a3df2c25f76889da9485d4938db36f18e556464afa4ff46dfc1e76c9d1f09. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:38Z), 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/USNLR1300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13f780f89d8ccf91395772572fb354056989c10dbae1a41aa7e2b76ebcfcfcf. 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/USNLR1300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a98587766f8a0298ddbaaf61c2bd7bed4025982f7620870a8a94ca1b94612e0. 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/USNLR1300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b289e74b6a768752029c274e2a1ab2c0189f620da4e7140727bf8cee7e46f7. 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/USNLR1300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f81468baa37c124f125e46f302baa4767d3cc7b65662e0c3ee41b590840b5b. 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/USNLR1300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768832e7e47e19d6c33ddc8e13ce45626100a7314fdd02c8746ab5350aa895a8. 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/USNLR1300435.
Looney Tunes Cartoons (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3356adcb93b671fbfdc6ef4a0f90eaedad6d7e59552d8d9a28077b2ac6a86. 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/USNLR2000490.
Twist And Shout! The Seventies Rock And Pop Singles