Arthur Tatum Jr. (, October 13, 1909 – November 5, 1956) was an American jazz pianist who is widely regarded as one of the greatest ever. From early in his career, fellow musicians acclaimed Tatum's t
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 0x952a5b763d1ab7309459de9021ffe1ace68a011cb5a146689ecfc21225f93c77. 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/33307128-4ba0-4cbb-a91e-6c0398cf9b0f.json and https://artists.proofprofile.net/proofs/artist/33307128-4ba0-4cbb-a91e-6c0398cf9b0f.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 0x7d9d13cd360c8d6e100537fa69b6a32f8aeae583405e32a82e5b79a76c8e60ec. 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/USSM13300772.
The Complete Capitol Recordings Of Art Tatum
Makin' Whoopee - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd398fcaf944c157f47dc07b5965e1e6486eb70f30e7c66fc77b7eafa522c87. 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/USCA28900895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeb1432ead444bce124849f40dceec608d8a17090c7f89f82cc8db73d9acee3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCA28900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e5c6422ba6f9178b03444cf83cec348b5fec682cffd5ea57332a9a6ee91b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCA28900883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfed618905f6320e9d9c1840cc3dd52071dcb5bdd29cf0ec189f2d6b129ec3d0. 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/USCA28900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbec344ca5b9d5dd32f562e8e4ed1abe5987edda00952189755cc662c0756e. 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/USCA28900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe850bffdf83436567ac67004d23c72118211d764a59417364c881500f7d1e3ef. 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/USCA28900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f19d6c5ebf4145e5a90197319671842e9f91d0b80739ac92d626922f8d2fd15. 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/USCA28900887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be985e04aed2e0506462421bedecae85e6154a775aaab14a39e83f04ee28bb. 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/USCA28900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d4f320c5f0eec30384fc7346af8598e4f020cd72961628ef1af8fe7de86f3. 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/USCA28900907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f079a91713dbef8fd24d8309dcf9d14b25a612836c8a60ff803875c65c6f93. 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/USCA28900891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a7e675e73a1a28835acf7c999dfc8add89f4bc068bb964b17cfa8c84131d2. 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/USCA28900905.
My Heart Stood Still - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68159f6d5cdc87d599d0febdda9e3b6cb4dc615cf4ec9034aa2b4208a75d9ef9. 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/USCA28900898.
Just One Of Those Things - 1997 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27172f7cb2a6791b8cac80568f7e890b9ebe8c32522ef2e78fb792fb9bd7499f. 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/USCA28800896.
Indiana (Back Home Again In Indiana) - 1997 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2da87f53173766bfdb69f889d42c1d1cd9cb2f44dded5ba94f328563dccd1. 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/USCA28900901.
I Gotta Right To Sing The Blues - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4ce9e0a524a745bc752bbfef28a549a45aaca1d0faf2bcff590af8744b765. 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/USCA28900897.
Would You Like To Take A Little Walk? - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8cf63ef9457150c40fd2023d39472cf182c4ca2fed83537ab340f6608a7f7. 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/USCA28900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0e64c680ae436c88f40289600fbcff00bedcac8dcd1d790af16e913c09b20. 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/USCA28900903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f18367a69fac05d937603368e89fa5fbfe6cb4abdf28918c4d3fa8e6f5352a2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USCA28900886.
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 0x4f3e7f4d3d50df4c1a382412477161832c9226a56a5d5df2d5aece12857d7974. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCA28900882.
It's The Talk Of The Town - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7081476bda6fa0f675ebb5d7f2317fdb73a6fd229d541c51cd037f00febf651. 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/USCA28900899.
Dancing In The Dark - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03f3f13753d44500f17e70a12accc6506e5efb8406101c58acbc52afa4ca22d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCA28900893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6994cabb363ea974ae5a94b294431939975f9c18d726292a6b0e96fa2554161. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USCA28900896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314ab1b0d1cf2d1e37d9a714403c2d4f56837c36a3afbf5506f607b268ffbde. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USCA28900890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa144a77efdab8452cb8b52cbc6bd955e790b9aabaafffd34fbee9483e3d9c8. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USCA28900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1364ef994ec689111b183a18e66b7c59ae44ff9e586baa6e6ab51468947739. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCA28800895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9af283080eba7d6f79152b94968841f569193c0890d605383d6d9dcd0ecae. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USCA28900888.
You Took Advantage Of Me - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17b1838b436e35d290678483caa893bdaab889edad1bbb66780ea1a217b1049. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USCA28900900.
How High The Moon - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83962620c949d29706b0e1721d84ec312839a8e78364822d5fd34f7b787bd4c7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCA28900894.
Promotional Interview With Art Tatum, Paul Weston And You - Digitally Remastered 97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf245146779716d8d4a300ec29efd967e86fba918d131dcf5ea11634c9f43d0. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USCA24900356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e669703ffe87b80941a327069b9b93a5ace71c72a9932769665e5fcb19ff4. 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/USUM71700823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9d13cd360c8d6e100537fa69b6a32f8aeae583405e32a82e5b79a76c8e60ec. 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/USSM13300772.
Ken Burns Jazz-The Story Of America's Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063f0a0afcf8402536793806098f0785582e21a0604e430400d2be4e5bf5994c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DKEFA9801228.