Columbus Calvin "Duke" Pearson Jr. (August 17, 1932 – August 4, 1980) was an American jazz pianist and composer. Allmusic describes him as having a "big part in shaping the Blue Note label's hard bop
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 0xa72735d9ceaa6208505ca0abce7e2d057a38b2f43e92cefe139aacf1d41f9815. 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/5bfa4d2c-fa8b-4387-94c7-c9d68347e575.json and https://artists.proofprofile.net/proofs/artist/5bfa4d2c-fa8b-4387-94c7-c9d68347e575.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 0x146f3e9d986f5dd93a50190b47151b5139cf2dd25f03a6ce7486b1c529fed16d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USBN20900663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f00600d7e50dce84c1b7dad564948fd32d075cdcee82501016b5c7621a5246. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBN20900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbebf820011cf726455092fe40908f4f694c054c555b8afb3c635cfbe013a9b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBN21000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a9ddaa36d869f692048c8636c53f3461a20d733708c4019adffa3117a5c65. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USBN21000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08268ad532261b6d0ae161a7a5ee15f701eba55fd5f499e3787875b13dcbf8a5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:47Z), 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/USAT20502253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f84e821173a2a94851a02890dc927fd59a3863ca95edbbf04702c6e6b12a7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USBN20900726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119f43fbe04a8f9152163cefcd8700ec8971eb63c3a6cada5d7a450eea696e9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USBN20801043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825df67d17a1e57f27fbd38a294f85f21134a5f4661ac485bb360b541f088ce2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USBN29300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09da3ae7c722d65cc8cf0950ee8db8f83a0b2799c905e072e5338d3024f84b2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USBN20700980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc63455dd4a150d86ba4a27ebc1134fa39374a48cca8014c858a018c02693d0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USBN26800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd87571807cd632c6ea93367847ae84ee8be62c615a39df37b5fcd3f28a7911. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:11:01Z), 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/USBN26800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a1e2b0c2727ec932728cd67f823b311340739576d0cc8b469920c4b2cb2fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USBN26800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5994f9af724d59107410b922572caae1c09e24a55f2eb8ccc0bd68494b050e37. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBN20600521.
My Love Waits (O Meu Amor Espera) - Remastered 2006
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8faddd1763dded592cba8952797c43bd2680f23a8f46fd2063760a88fd2ed15. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:28:04Z), 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/USBN20600523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39533d9f7983f198db1c050c116249a6179020606cdfb0d066f91172e263b65a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USBN20701013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3326fc895e6f080583ae51afa4203716502c477b39b7e47f84056d0b0732cafb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:25Z), 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/USBN26900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47108c8cee2bf5a57583f736a837ded737a446d9e78102080929e268f20687e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USBN26900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec47620cdbd3abe96bf964a9b60c53c1f5649f16814ee91ab17536804531a38. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USBN26900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf5ec774d89ad984d1f1f6bafb86d2642ad156a9f3fd810c83a40b001ea7265. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USBN20300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120fe3f6949362c8a90a468cba88a4e0e0044af114c6bbe798b7e525c18781b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USBN26900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7599bf35bda6eb9fcea421d4d6b12fa9c8fc153cf739256ef3859961ed9ec6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USBN29200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568703fb2a37f332a7c290c93d44c3b21bea4410af607e338a38b8edf11ccc85. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USBN26900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e20e9198e8a2cf16f1b7146fbce6da4305b9f9d46ee5878c0b99433f3dd73. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USAT20110821.
Hush! (feat. Donald Byrd, Johnny Coles) [Remastered 2015]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3e93c05f96825a83f03ef66247952dc7d035be801f9855a697e1d570bf07af. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBN29300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf069639d1a1329760fe767b8db05e13e11c5a137af5c8edfb25b1a8d78e352fe. 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/USBN29400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e591c2dc27d40341af2a9ff2a8eeb26d3066b1f0c6bb9798284beb11745a21. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USBN20300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238398c0a02b2d26596b8c1f7715c24f3e00e5699d0d9bcf82811570ea4e80b8. 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/USBN20300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf069639d1a1329760fe767b8db05e13e11c5a137af5c8edfb25b1a8d78e352fe. 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/USBN29400581.
Jeannine - Live At The Half Note Cafe, 1960 / Remastered 2015
At The Half Note Cafe (Vol. 2 / Live / Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33bac667914ed6f7218f6c879b6e65e6ae2cde9a2e056eb911d8d0e836266e6. 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/USUM71501792.