right|thumb|210px|A "double oat malt stout" Stout is a type of dark beer that is generally warm fermented, such as dry stout, oatmeal stout, milk stout and imperial stout. The first known use of the
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 0xafd11f4e230efbbcb3000268868af61a0698243a3f85177b8e98c59b4f19eac2. 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/09662854-3809-4bfd-bcaf-d5e9b99f8501.json and https://artists.proofprofile.net/proofs/artist/09662854-3809-4bfd-bcaf-d5e9b99f8501.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 0xc757a30949300b86209b8a2a774100f6d5d63431287446d8ef8b68c82762fa93. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308355.
hold me down (feat. Jimetta Rose & Voices of Creation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5aeeafdeea138492dd01ed069d807dc9b43b5e77a23cdfba443514f1f4530b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308356.
balloons (feat. Jay Electronica & Eryn Allen Kane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb892ec142b2f68323769b45402e66f83c951587213004fc47f68080e9da7be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed2258eccae08456d4f762ffc565ea7eca1f6f58ded4a6523315a145fa5c30c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9238db7b33dad9efcc2b336b9a0607641d4b4bc4b0bb23e1fa5b257c474e0209. 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/QMDA62308359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c60a18021d9789b48f7694950c0112c6718009f004be8a2dd0d2b932f1a83e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104c601a70e52b4c43889b59e9d7b815b04e1d0ed3ec7c5ccddac95cb3f2037c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62308361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e34cbe464117f59ffa7167008466cf4a888e7c0e6ecaad5e88e9dcc39ea956f. 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/QMDA62308362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d48c0843796502487316e718d8b32b785f3228d6f17f2c333d7b0e61615495. 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/QMDA62308363.
gospel? (feat. $ilkMoney, billy woods, & STOUT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887c178252a10927fea5e0c0aff0d76abb7f8133aac94ac7d678b2b8a5d40cd8. 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/QMDA62308364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646fcc652740daa73ff865468fbbe980a7803c0ca137fd6acbd97c29bf2ced93. 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/QMDA62308365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5543fe13f94bf1cb085dd13b69efe1dea8e4ebeae9ef2674e74a63eb7f69766e. 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/FRIDO2313839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4120adb28aa0c7b0009f6b5817144e2b455a30bf70f2f281e8b0e524a9b1ae. 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/QZNWU2036144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca2aa6a988024af4dcd9268abcdc2ac592faebc4ffadb96bf7711a2acc3970d. 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/GB7GV2581005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ca772693075e703f7448bfff664b2209ab143627ef4246356f7c48b76362b. 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/USUYG1471831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda75302a7a4282b03270630c5288219a4f9b84450396bbc4c100366444bc856c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa8b9b7473184166c23a9fcc6ed58a080fffd3972773b58dc504466c8f5468. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbed9694720fec28b529d08aa4d875cd7aefa070c879b1b7f33e96f66871256. 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/USUYG1490833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd697df317dd552383bf42b9569ad9508a25424f442551e787fb1a70c5444df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1471837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7260ac7438b06761427e8dfd3163af6a85fc5b7da41c08d50efce26bad1fadcb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1471838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ead81905244e3a0c0cdedf5753e89c8c659fc127252710ccb5f4f8f653d49. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1476386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eedecbed4b0b242c171404358609139322807796152641f3e2860bb15f9050. 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/USUYG1490834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0926b6e6cc5574db3afde26791509dadf829254838689bdd46e1d5defa44f9. 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/USUYG1490835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b2c0aacabf7c4c575adb17d92b7c82d394e8d1f6c4f75e14a004071b9da1e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189ea344ca45b14df6d396ab5b807c478ee6345a4fa709ca2fd10bcc6ecfc425. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98f09543f166f5bcf0de426b52ce6d3226ce6cbc3202bdd5dc04e8636584a2. 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/USUYG1490838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59639e26597250c0472c2dd941189754a406b85bbc5f3cd01372d80d58ec4e98. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b436a43d019e8d429ff2acc1daf9e1570b6ac2898a96b7fb489aa090ce7adc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1490840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4badef64edd217c8b758c12acb5a23709b7265122ca332823aadb2162314655e. 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/USUYG1490841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc774ad30c1b8c7424d4499942f8f01cfc0d462733780715a35d65fb698c0132b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1501389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995329b1b37e60ddcb02914049fc5b532b81f39ed21f7504d37f27bb0eed5b51. 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/USUYG1501398.