thumb|Lee Konitz (top, center) performing in 1947 Leon "Lee" Konitz (October 13, 1927 – April 15, 2020) was an American jazz alto saxophonist and composer. He performed successfully in a wide range
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 0xe874795f725dc6c4f89d552d023b94d17df5692838df30c51853ae4c4e1f6dfc. 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/ba296d42-13ac-4132-8442-2c17e41da207.json and https://artists.proofprofile.net/proofs/artist/ba296d42-13ac-4132-8442-2c17e41da207.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 0x6230ccb59369d23dca1a4b24113aad160d13a99bef63fbd68f82ebebcbf7f748. 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/DEPI81502751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c57f40c52bf7c19cda02befc91f2ba7697f2219c1e19e0aa624fb0318a5f71d. 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/DEPI81502778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f878b2353aae77b8916106325cabb35576aa0398919733af5d08d8774f4c97c. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:30Z), 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/DEPI81502777.
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 0xac3fbfa90f89d5168a5a5162ac280c2fe921e77177eea8dd185fbe2779a25b08. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEPI81502776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286bdfde5aa10a576e3a135fa088037d4a2cc92f529483dede60a4549812b0bb. 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/DEPI81502781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6fed3cc6434daee82d80ad934e14e08fdeb821083020b363c0b8519e26550c. 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/GX6WQ2208343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd2b21b134007c010d566d32ff68856a51bad0b53c1bb052df794101ae3546. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GX6WQ2208346.
Bark for Barksdale - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d296e2d4e0b29fe4e8801c2f8d51d71f6ff1a666b080a99745088a091e9fea. 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/USZ6S9819101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce39e347b7ba8ae61a5bc61a68345a737480dbe470857896780772b2642ceb0c. 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/USZ6S9819102.
My Funny Valentine - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b650a4de470df0940d732599d38a0254ed2ad975672ecddcb02633d85ca1044. 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/USZ6S9819104.
Walkin' Shoes - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca699f0ef7a8d368fee61c1caa4afc2275077a472e65a05c3a40b1fa610dd0b3. 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/USZ6S9819106.
Bernie's Tune - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4165632826f58f6451516e0d7a463cde429f3153d6e0851a4e13677b332427. 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/USZ6S9819110.
Elevation - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca78b3acad24e466dd1db6717720f65a1308ea732dea5104c2c1305bda7252. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USZ6S9819103.
Rocker - Arkadia Jazz All-Stars - Thank You, Gerry!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced3e9406ba871c72cb88e274551d49b63cf09e943e471c8ce61fa8180db4abc. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USZ6S9819105.
An Evening with Lee Konitz and Frank Wunsch (Live, Cologne, 1996)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f71905d5f3dd6d1ce2e276d9439c5a0d4c83ed13990c1f2046baa96c21d111a. 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/GB8XC2104730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8c93c2401960792ac0b97c8c5a5b6d388b79f65b4500efeeabca37c758f4c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB8XC2104744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf405c88e7dae59d7d4f05e7cc160b536b7baf69d94f63b8813a1ecff9ce2c432. 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/GB8XC2104745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964a8fde4ebfdf2c485411428296963fabd719bb579fb9fe23568a0e2611d97f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GB8XC2104733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4d2e867fc7649a9550086dcfcb22c2579be91a09bd23fcdc686c0f2d445a6. 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/AUXN22100717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a97938cb4b6733c01cf0b5403d0a553f714df8e483b6b4a037abd12ade89206. 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/DETL61614693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a159a7265686b8fddd035dcb64818faefafedaddb03adb8a8b14c8729a31fd8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DETL61614684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052e2b5205767a2704751b1c05f3c295cb7232fb57051ad6c161237c61f7e4b7. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/DETL61614676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bea6348e1146553c78d30dcfe6d45c79df1d154a5da27c6eec5f8a44a534a5. 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/DETL61614675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ece493060d52e84682165d7fbab2d33949548960f8a295dba2bc3f47db8f6e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DETL61614691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6eae46452feb8e07ea9e037690f471583f8b6b6cfd1ba394e543384ba27733. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DES201810801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6265504df480355141dcd72ab3eadd40116c40ec558908b992be7f7a79fc8040. 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/FRUM71601893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdf62e316c72917b09d64024d22ad337d4db9f2c48563f526d334bb7b5def9c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FRUM71601898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8246f8c9c1856ebb5dcbb61544dca73395a78438a11cccac22fe07d052aa8984. 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/FRUM71601896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e543e60da25994eb71311603c389cb6770ac865864ee0918fbc5f25c1ee61. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRUM71601894.
Pennies in Minor - Live at the Midway Lounge, Pittsburgh, 1957
Merry Christmas with Lee Konitz [Remastered]
Chronicles - The Complete Prestige Recordings 1951-1956
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa33463efad8475fc4794cbea2e1e915d28cb1959bc0118a90e4eba437aaae. 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/USFI85100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9b90a9e389c2aaa795b456ecb12ef66a08086a8398ad3c7dec6fdb8d399137. 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/USFI85100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf7896fe91a4b45ee7e7282b5e481494a8a44e6edb4a79d86db60b1044cf12d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USFI85100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4392ebbb281483f7b60db16eb8cf5e5d51a48da24060028c2e99fa11c40632ca. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USFI85100018.