Venice is a city in northeastern Italy and the capital of the region of Veneto. It is built on a group of 126 islands that are separated by expanses of open water and by canals; portions of the city a
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 0x88e9cd212247c6333369a14c35cb21d491e2a8b0363514f6ba828c53053dcb13. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54fec70f-29b4-4fad-878a-afa2984e18c5.json and https://artists.proofprofile.net/proofs/artist/54fec70f-29b4-4fad-878a-afa2984e18c5.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 0x8516679692c58fb083bd07d07dd5b80382b7a9d20f761f65f311a78a69b1ca1a. 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/USVG29753055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a943a90724d847f9c74e8bb5fac75c9206ef40819022147c000b3a6bae1f27d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USVG29753057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b8a7d69b40f3066705ecb12eab6de9d1b44af445716f927bae9704b346f1e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:48Z), 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/USVG29753060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fa9eb625bc6ae0d41c294dd44615ac8daa9f4c1b2cd48a3684179f16beab8c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USVG29753061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acb25a2fa753fdeb443219a28960d941d37d3f9b586ad3485aa953f47e04dae. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USVG29753068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebc6c5e34e924f2b76ee34d5c554e41276e929426339688817a26a3dbe1f69b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USVG29984041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e77e36e2063793f7ac654493833e5ae439a7c8060c3fe4d229497637cfdd47. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USVG29984045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ed2ecd2b46c6ec7e73b833711e90a3e53e14acc5ab4c213097b91cb7406ca. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:54Z), 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/USVG29984046.
Jan Douwe Kroeske presents: 2 Meter Sessions - Venice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe361ea4c3aba5c3c95aa64d7a599de054dc3e3a1b272a894ddf5fce075df497f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH0656247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ee843572c90df7cccc55c9d338137ae73e4acbf65dbb97811b13b56b78733c. 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/USRXM0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66350a58bf8cf91d22089f69d22d34eddca05ac9e27a8d3bace2698145444f65. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:09Z), 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/NLYC61300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fa7dfec1cc12bdeb2347554006e96efffda2a5130d0a2ef4b4e02c157cfc81. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLYC61500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc670571873482b5093528e79f7efbf41e768ba883a29b68f133c103ad052c6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLYC61500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0100d768696208070fa099ddac189d168db4ae8cad5fa841154b58187b09d875. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLYC61600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc19c2964d29835335b73c7ffdfc64e51bc9647c2aca97a38b35d6f39a19233. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:24:20Z), 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/NLYC61600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63da1072dbfb0043b74ef3a8c449e3a378f2c15b8b1c652bbfda60f09c14d801. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLYC61600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed9fd923d5ee258b268c82bd01794b061a95e72508e3cfffe58e2c770e4fff9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLYC61600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a0de018abb011ab05d533eec67c8dce1f7e8a865094efb975005aa955a6eb1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:38Z), 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/NLYC61700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3388f03d06d28f1553650e840a11d74a07d46eaec612e7fa1c3c36a93ef96f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLYC61800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2893278b8ddf6a2fc09042c19d49c458a36908d6f402364bd1d7a5f565b2b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLYC61800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3388f03d06d28f1553650e840a11d74a07d46eaec612e7fa1c3c36a93ef96f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLYC61800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0849e8bb98d37c01500b1e61ca30cfa01b5ab881572666f903b9a47a11647eab. 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/NLYC61800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341325f73af01031e566c6ead2d776e75c147bdc48cfa59de30de0ddc6b0a5c4. 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/NLYC61800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cead6ec352e713114834c9accb114794c30a4863e22b24cf474d5d0b01bfe15. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:26Z), 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/NLYC62300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d0b9fd36b737a4babf4c620e89a92d808415d6a9e24657c3eccc5f2824923. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/NLYC62200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9426044031865645d622f8210d6e10d856d4486acf08881e2312f47fcb1870. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLYC62300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc67d69cac1e241eaf5ec17d5ffa74fb966357000a281029e45225a45d4d54. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NLYC62300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3770ebfb8e957f854efe66f07222e73cc6dec7b5ca722cb3c437485a02a27987. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLYC62300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428f7581322cd911a012f5d09fc8171ba8d189b149d9f29ada3b543a1f851079. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NLYC62300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595d0c316efa7f5524ac030204f25795f700a69f020e680b296c5e1268f4c7c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLYC62300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f66889ba13d749eb4d1cd6fc85148192725f7821de471150934bf0b105338f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLYC62500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f66889ba13d749eb4d1cd6fc85148192725f7821de471150934bf0b105338f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NLYC62500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1fc71f330da330e8da6e8009ecdd783f848324854adeaba79aba4b8c3f4c29. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLYC62500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9489d5859036fde12ebf50aefe3e6e31b0349391ddda322de87f3058663c1f99. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/NLYC62500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd2dbaf16ebf9b2bc25a1b4bb119991903f2aa5cc3adbc08e11be0f025db23. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:43Z), 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/NLYC62500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f9f0cb0c0171a62717d89a80e48a76a80689c0dc022925335340e4529b4473. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:36Z), 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/NLYC62500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc690ef816fac0a0e29d79f0f2af1c9433abdc250e6198584ae1af9f049b5c23f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLYC62500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaafdf933e2da061fb9762aa5be4be3f09dcd457f5d984296c6fbbdfc82df8b6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:17Z), 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/NLYC62500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a6f729347c11dcd34588f06583754a61febe3800ba05cf8c75c8413f44943. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:12:47Z), 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/NLYC62500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787286a8dabc1a3ebce4994b439229fc1d8ae303a89c50e7633a7523530665dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLYC62500022.