Cedar Anthony Walton Jr. (January 17, 1934 – August 19, 2013) was an American hard bop jazz pianist. He came to prominence as a member of drummer Art Blakey's band, The Jazz Messengers, before establi
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 0xc33a468d5d63b923a1ea969b55f60749249b49319a00b96333603079dfcdc05b. 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/addfa9c6-633b-4198-b1ac-0fd8b73f833c.json and https://artists.proofprofile.net/proofs/artist/addfa9c6-633b-4198-b1ac-0fd8b73f833c.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 0x57f6e5492a048fc16e59ddb8403e009567a0243602628fd1aed64d154b71f3ad. 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/FR6V89502222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b685f20ad3f44e68e29ac27aa95f55518d59650cd36c01476db1a42b949d6a. 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/FR6V89502223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ef37484a42c3ca0c8cbfc1cd4ee9059bbde57947254030e835e0b27eb3b29. 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/FR6V89502224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a685a297ea62d354fce7e7dd4fec0137a6327b6c34f76e258b95b39466097. 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/FR6V89502225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213787cd9ccbbab5ddb69be234f1949ca52ea2e11a68ccf48a099a87ff18a634. 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/FR6V89502226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60798c2b734990893ce115c6a8d81c32677d3eed4ded48a77c7264c1098c9472. 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/FR6V89502227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299225dfcfa23ad6f45c7c40f3692a0f51fdfa3834806f9727c3c97a48343178. 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/FR6V89502228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10ce5c27b4ce7d6aad65d639dd92c8c792624d1ebe20dc6262fb44feea5907b. 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/FR6V89502229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b651246a16c15cbef00e6a8a9f85fec789b6845df6c37dba20fae6dc371241. 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/FR6V89502230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0016e62004fc4cd65456e0121dbfd579f120c0ba6452a09caa4825f13e095. 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/FR6V89502231.
Charmed Circle (Recorded Live at the Keystone Korner in August, 1979)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97862a097fb6a69fe37afc6d622c4ed25905f0b61f5de74cf6df233b9ac4667d. 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/QMBZ91639443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102512d6cadb7e6b3ffec1f7ea4f01bcb8f94cf2316bd838883de1fd3832f429. 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/QMBZ91639444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f5be14dc0057beeac77118dbd107921e101476e3dafc065eff9eb5930627f. 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/QMBZ91639446.
Reliving the Moment (Recorded Live at the Keystone Korner)
Naima (Live At Boomer's / New York, NY / 1973)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a86ce9fe3cf36a46e4080e27ada2e7862ee6f2a66e8a7c2ce23fd1491809d85. 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/QM4TX2383876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12aae3a561c2066139e1b26b72cd8e07a04a5f1f0bcb1fc091376c35a173a21. 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/FR6V89202298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5df745cf2627fa0b6bc81588e1fbdeed7644faf9679903cfb7282f7b52e8cd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:02Z), 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/FR6V89202301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcafab044cf38a355be57286ffbe3492bbd9d3204478d3b2303649a064d4fb9a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR6V89202312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1231f4c4342f8578c5adfb825e763da6022cd12f4947c02dc1462373ecdf518d. 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/FR6V89202313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9e70831acb9a7627739a59b121e6a60d2e35c4d6c95e509215d19217c0960. 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/DKARS9201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51927410a7f06c1076c7758ffe27354a43ff94c7041dd6c52d75ee3cbd9c6681. 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/FR6V80044903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacb3661503537d4722e913d881b8257e7ab010634e060409bef050ee2d4c85b. 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/FR6V80044904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa362e7b6cf844265c6d83132b5d9b82dd67f3fa37ffd9f1fff608c8db1f1a55. 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/FR6V80044905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b7160b6615a3f4532b13d6bfdc00934c05900ad5c77c74a8af416a2a3dfe2c. 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/FR6V80044909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a4bf75e1578ac7f4767943b403f111b3a096f3025c9d14e89d2b6531a943b2. 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/NLA410815569.
Walton, Cedar: Cedar Walton Plays Featuring Ron Carter and Billy Higgins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a30ade89c6f73a7deeb2229ddbc0271d9def25513c60df819ef820bae461404. 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/DKARS8700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd57a36fbbbc3dae9c2dc615a365684cf431799f28c6a61eb863c5338bf3ac. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DKARS8700707.
Monterey Jazz Fest '91 (Live KCSM Broadcast)