Jay Cooke Allen Jr. (Seattle, 7 July 1900 Carmel, 20 December 1972) was an American journalist. He worked mostly for the Chicago Tribune, though his contributions appeared also in many other US newspa
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 0x7acf7ca2d5419e829cf66db306e34b7965ee992290b4f480f759f768fb785e39. 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/c3647744-363c-49a5-ae79-2a5dfb2a2d76.json and https://artists.proofprofile.net/proofs/artist/c3647744-363c-49a5-ae79-2a5dfb2a2d76.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 0x50a4c38f4a9503d5f3d9cb9b73d0ed67307652d479ada30bb799f64ac6535143. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USJGN1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d5af5975452f07c04397638cd45a4a04637913a6b01424e496f291677b5d70. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USJGN1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837af022a82f85494540e9f6f8ba29767696bfa82f270e1a073576f1a0bb77af. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:07:25Z), 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/QM7AH1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d855b65a565325da3760378393d0b5ac50d74ce347ef035734297ae4b9747e7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJW2065193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0889bb72739c301a703c62e6755b4673da555c1b5bcdcf4324eb82f473e4bf27. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ62178497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae90e59800afc38b3065cd324c3a2d24704ff6752ea6c58f70afd7105b6b308. 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/QZNJW2171388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e9444489352ad024b6076820de3ce6ad0be49a49a1b55cf885a9d89599086c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJW2171389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ad9070cbd0eaf440a136e93da5a05ed9ae51caabd38883ea7c63fc9f943a8. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZGLM2364333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9305ba4dfd46ca5431623e07ebd27c2d0378b1415c5b02183add1af2e0e8c0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJY2316685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed0361b8e4828575254a5d4f305d239325f351d62334377f66a3737588c296. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTPX2364473.
No Present Like the Time (Holiday Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f890b5225fda5aa5c011c0a5150e866116b82136dd43a0a47c0c9edf112575c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZGLM2488272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4929389d4dbac6918f5786144aabaecbd97c5d5da5be7eaf8685eb754c6751f8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMZ92415393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a81cdf5e1abcbd4a199788df838a6a9128d2bf81eda515360908920ecce244d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:10:35Z), 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/QZNJW2455695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52dd41f8084b4bc6359aa103bab7a5d844f37602acf8373ce1f53b6b0a02480. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:04Z), 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/QZNJW2455696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed0361b8e4828575254a5d4f305d239325f351d62334377f66a3737588c296. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTPX2364473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f890b5225fda5aa5c011c0a5150e866116b82136dd43a0a47c0c9edf112575c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:54:20Z), 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/QZGLM2488272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a15955ee5cfc624980d655919e47a6b5fc75ba015ef384908cb467c1cccce8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:09Z), 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/QZNJW2455697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4929389d4dbac6918f5786144aabaecbd97c5d5da5be7eaf8685eb754c6751f8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:24Z), 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/QZMZ92415393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9305ba4dfd46ca5431623e07ebd27c2d0378b1415c5b02183add1af2e0e8c0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNJY2316685.