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 0xe7ec5ae235a4b5fab23cd510fd9fccb49419f011af1e86d39b2e056391bace1a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53b196a9-d36d-47fc-a1cc-1a34acb0a42d.json and https://artists.proofprofile.net/proofs/artist/53b196a9-d36d-47fc-a1cc-1a34acb0a42d.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 0xb86c57834a6998d06fcd0873901a8a67304cc858c695fa48820f5e9f95f951d7. 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/GB8KE2163488.
Liondub Street Series, Vol. 55: Back to Basics
Toby Ross, 4K, Oram & Rise present Welcome to the Jungle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29cb8e41777a81652ce20dd17e08090ed3395c4fe1ae1144f57f0f399287904. 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/GBFG92100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe890d8b356092240d45996797d91b74b03366374e80a04acfe03ad1c3ab98437. 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/GB8KE2150298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3377695420473ec518bef3d875d64eba35b86459deac10a5fdf552eec380904. 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/GBFG91512670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024057778e2086b903e0b8d5739fe604dcd883fcf99094679a72d5d9ebd4866. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GB8KE1953855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aadacc96cdb5ed1fd261e6722aa274b594f30483d53368c367d7fbd49d00877. 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/GB8KE1953861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9e10737dbd5762532101885907bcbd50cdd37932a347912bd9e6f18504d9ed. 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/GBLV62419296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c232151a69e46938c6e4244458cf0a51718ecb9d03862150d2d3572dde56c2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLV62419297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e358b5a36fe9c3eb22e8713f05999a0b91e1439acd0c20264d4738be400ae. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBLV62419298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c342f4d3352fe77aaff3ba04b66fcd0204798b92e19719a693df61b76742a5. 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/GBLV62419299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfcc04e0ab06b00d139d2a326fe68b9d8374c8a90189c56de08f0aaaacfff86. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLV62419302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4489f81d4d0a3bf64f62f4fc7e28323d1f1858c6df83d6ff71fd1ea5624aa34. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLV62419303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7658ac32227e7086643fc5bca3b9b625150410069d94c781b72e440ca9436494. 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/GBLV62419304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e666fb0b40b25b6004093e2bf5bba13f5ff16d654d3c384097cec9079837ffc. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBLV62419305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d5bc619b316a083a40db8a1339c7224770321515aaa96e39ba5cbe638d3785. 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/GBLV62419307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e18a2a0cb7237cc4665bea1ab362e5e70a20bb84cd233f8f9451e41990f12. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLV62419308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d95269045fcfb8eb51ef00b3540834ef5bae94ddbc0449eabf77db9ef3d9bb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLV62419309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3121fb245b78d3a68e2bd2f077701a8e2e5d68457068032da2e23467de47c344. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLV62419311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db243e401aa43a11d1a90c69e3e7a3b28e9a838eaebe87ccf6720f738b0928. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLV62419313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a36d0e89517a525ccc75e93fec1214b1f31528116778a7ff413ea8872381f. 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/GBLV62419319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb87ccbe69ada31d1afe1ad2a1b1f3c9283198c662828674c6a8957a07c6fab. 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/GBLV62419322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1780d9437e27a7685a4f7e75e57e8b15f499f00f1711ab96033afe7d8c22e486. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBLV62419326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722448814cee76b4c4ca1068e1fb553cf29f92ad93cdf96105f880c319006321. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLV62419328.
Jungle Cakes Presents: We Need Jungle (Mixed by Saxxon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc67d13add288b95003ce1b6a1d9167a6b8adc95cec09f201fecbdae8f5f20b. 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/GBFG92400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb29e7fdb5f7ef51f9061f157aeff625bf2633fc3b2ce0a801cb9cb70b349a. 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/GBFG92100371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6d9413c9a3052d736ece8d4b305d4815883f103893c2ab8c7f31fac7b5444. 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/GBFG92100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46f53ff6e35cb227869903cb492644825cca37e1e834fe0578eaa1e6b99a87. 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/GBFG92100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0010f000263d4468082e3514c174f0a07769c5ac2db36e6732e742d09c641. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GB8KE2325755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5789c0d401dc8b9e651e9a2229e3703d47f17e51f1c0927542626d80ee3e80. 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/FRX202044257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb905e0bde87a9372717070994b3ca9c21d3640409fbbb61ff640c955304f8311. 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/GBFG92200382.