Milton Jackson (January 1, 1923 – October 9, 1999), nicknamed "Bags", was an American jazz vibraphonist. He is especially remembered for his cool swinging solos as a member of the Modern Jazz Quartet
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 0x0d2f29bf3beefa20c07e9e8e7348a7a8426beb5fe0dec3dc0eda93ac33d32900. 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/6e7defd2-9e12-43b0-8598-c8b98094695f.json and https://artists.proofprofile.net/proofs/artist/6e7defd2-9e12-43b0-8598-c8b98094695f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Things Are Getting Better [Original Jazz Classics Remasters]
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 0x7ed8d66188e55aad6487f1646b7de4829087ed7b91ab2d47803f852ca0bad756. 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/USC4R1301703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ec1471c5b31e4b714059cbd6baea3777cf26ca8b22b6e65d422760a7ef5b2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USC4R1301704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17194ef6bbeda5bf79a81e3955364e97bbd0f093627581cb83a40af74a7de4bf. 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/USC4R1301707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20353ea10503906aba6ed8f81a682253e983afdcb221ebf7ace7c6f3f3a9a3d1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USC4R1301700.
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 0x3e365769c81ced32e089920b8f315c4845b48273c8fde58f64c5748014a00f6f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USC4R1301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7571a5991c6812aa85f14792b40430ea01dcef310957f65b3975bf615fdef626. 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/USC4R1301706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef44b5536a08be730765259ec036981ad96abdf7028b5ad49d852521b568235. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USC4R1301708.
Sidewalks Of New York (Take 4, Alternate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378bcac5ba6ce933a940ab34dc62b78eb0ce70a5c2106c50a22fce1eeacacac8. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USC4R1301709.
Chronicles - The Complete Prestige Recordings 1951-1956
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0cbc1615f880cd20dc8e7fa5196208a58435028bf988c7b4ea1fc3de9161d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USFI85500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e027c00f3065f5b3991bcbf2be23d9e3da37bcca9a639ec92b8559d26bdae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT20104253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b963637b13bda2e9333e17b34912924036d9cacf3276f146efb4eec31711de. 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/USFI85500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05d9bd9cdb0a171c1f9916aff599c20751b9f2c2f2834996099b201a32e8d4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USC4R1301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe839e533934c3713542a9c8c125a1fec7d1a43d3581fb881a750f2bc0e549160. 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/USQW19800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e1819b203089d0c35cfdfb37b1adc5f10d23227b4d5475b78147db414f94d6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USFI85500025.