Puffcorn or corn puffs are puffed or extruded corn snacks made with corn meal, which can be baked or fried. Puffcorn belongs in the snack group products made with corn grits, rice, wheat, or other ce
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 0xf6b798745c341ee138179b74df45d675894ee3c5c96d5c801722ed624cdd9e0c. 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/faa4d632-edb6-4013-ace1-85adf77a4be9.json and https://artists.proofprofile.net/proofs/artist/faa4d632-edb6-4013-ace1-85adf77a4be9.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 0x1ba703aaed589188dfda398622871478dc188e057f3995f023bdad8900bb0419. 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/NLD682303047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391cd655599bdc2dac62dff1471a9f87c07951c7a326a0cf54dbf8cc3a842eb6. 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/GX38U2416003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03b52f01d55b7c1f2a6b45b5fa487f97615541889720afee0ee81f3db87e560. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CAQOI2401902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637c27bf428236e44ab803b4d33aa9d7cf192325357801fcb909ff9010711874. 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/USA2P2358955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e3a3e91ee5fa746e4a1f3f9408d4d4c2708a890e02b6d0d3273b734098370c. 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/CH7812355785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e43431d4de21b852415ebf844b04ccef149167bafe6086cfd49c7e051729b8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH7812355786.
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 0xee995bbb81aad3e46ec0cb301176ee2bf6cee71689194014dbbd935e3e04c7fa. 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/NLAM42200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e7888513d0f4ed624f2d2d10bbb97b39664df7dc652101fa2fdabc3a1a0f30. 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/NLAM42200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f831c83ee3570e142e47cf4fe7019218e5cd5732ddaff1fc76582f0713bf445. 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/NLD682202356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7691bba1f7dc148d928bbe088a14099d430c3e749b0259778c9fd4b1f60e1b28. 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/NLAM42200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cd347d3f6a18126fabc41d607374e816c27cc4d8f9533c41a268efc07c5176. 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/QM42K2169904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d742f11bf1b9709d1df7347656547b452cc3066ccc0a3d7a8c7e120e40ff67. 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/NLZ8V1800474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683ff9a615d5fd484dc5b75bfc54f084f75605c756d680212290f97562ae007. 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/QM42K2007122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b97428f16708cbfb253299b32e199852834cdcabe5c849c43769d4afde4cb6. 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/DEPI82009658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dde683327651303e9fbd1867a7df9c1db4cfeaedf9e3c3b793cc704d8e271f. 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/ITJJP2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce3d661607b8c06b30bca5004545734f378c7542130f6fe98f7d1c27f92466f. 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/NLRD51967402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd70cf3c4b6f53bd83732804bb7037f5d64d3f3d21923a199f5406dd2252d5f. 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/GBSMU6868796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035548e914f935b161f726c835e8149c6a4db10dba8674b65646efcfb101d2c8. 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/ITJJP1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc0453d834de402638ac7d09728b6feb1d2d36b9b8d3529275c51872f203eea. 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/ITH641827144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c03b945cf822ad7538578a9982bd5dd033fce64a7c1d5705a2d4ed89a88ff. 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/GXESV2535926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb669262688516cc85563b4ba91abe7aed26657ae703fc47fa717962e23384. 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/TWA532400634.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc39c5026c3d04df5adb6554eb176b4d6d53836da92d844cd274023256b0d5b. 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/ITJJP1900018.