Vladimír Mišík (born 8 March 1947) is a Czech musician and politician. He is the founder or co-founder of the bands Matadors, Blue Effect, and Etc.... Career Music Mišík founded his first band, Uragá
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 0x1c2b0593a826ada7f68f982792417b23d050919d116294bc63c8ec6cfd0375bb. 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/e9a076a5-a09a-47bd-b027-5321ac856832.json and https://artists.proofprofile.net/proofs/artist/e9a076a5-a09a-47bd-b027-5321ac856832.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 0x76c08a1caedc963726f01475c02e048632579c5be8c5a9388def83056eba4435. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:07:05Z), 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/CZA161604050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19fcf6a2b302ff2c18f1b1548312e07589775a61f1ae20c37ee0c5195d893fd. 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/CZA161604051.
Jiří Jelínek In Memoriam Etc... (1976-1977)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea834f1bed23df5cb9d3d84e297587ce92b4d6b223d4cfa32615048b6fa0e9b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CZA169300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0e619e09f7c57e2628b2ddfc46785c17e32a6c191eeba5683d1118e476825c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:35:56Z), 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/CZA167600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2dcc79ff1c2e52779b061f186b37bd6d3037f33e525636ae29c6a9d5ff7fc8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:54:26Z), 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/CZA168000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63bf1a253bb9ff93426561a05d140e80ac64dd180a9ed3cc7bb11b00b44a1f4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:02:42Z), 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/CZA168700568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61080a0812f8fd57c317fb7343e8cf82420e3f9e5a8ec47ee7ff02e0dde756. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZD681000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc39debbf3ff1c3543a9556ab772b9bce37eb2c58feb6844a52f05be3b531cce. 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/CZA169600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a527e3f001d0768b7a12398d9257b3979ebf2e7bdea9278394e88732b9d52c0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CZA169000457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722f0912dcdb66fa609a900ab839ce3007501a5c007232ba096aa284db49a97c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CZD681900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa693b49216433f6589c0860ea7e84cfca261e1d65c9d2dab36405c69e2fa56. 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/CZD681900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815a0ef14c27a53457fedc9c44967cdb34231dd2078bbfc929b29e923eb69c87. 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/CZD681900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4098c2321adbaca39370a33255a6853b94ffd3c12ad3d5bb426f1746ac79ef6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CZD681900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036708ab6c2cfe1377f741abea6f952576fb530e413a6089239d6b5d54c3be81. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:38Z), 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/CZD681900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b9fb9b59a5fefa14ef1b22d4c0639822299908ec0a467a4996b184c1283cd5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CZD681900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7a8fb950d46b79a2a97f5573f5267980518bee4b5242e0cb8d8df8cd39777. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZD681900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3321af6a754c6ba05876e404b18b1cc22f4abbd130963ca1d53da03e1a43cf. 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/CZD681900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc2bb27ca2795057f7aa86cc047f697dc0a5ecfaa375a1230253755702d59a9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZD681900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8168a214f9f8d9cd74513dfd58c0b096fa7851cbce82e0705d97a0596f2dfe8d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:49:34Z), 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/CZD681900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2dcc79ff1c2e52779b061f186b37bd6d3037f33e525636ae29c6a9d5ff7fc8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:19:54Z), 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/CZA168000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3ab3cf7e54a8f8eed91649066902cbf10fcbc21bb63925299bc4b4325f5a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZB872105001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b0741a0d0dc24b54806cfec8b4bf82e0d42ba873db528e12e3f3a9b890d6e4. 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/CZB872105002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcaf55e8d97642abc2ffdf460f78303d07fec537e088864ae54db1b2928dd62. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZB872105003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab92cb94ea9bc3348daa94a92717454b6c0283044e81345fd4d100ba8afd4ce3. 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/CZB872105004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ff1ee9594158ddb03758c75a5e109942d470c5028fde9e63a21b04c9960a4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:25:32Z), 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/CZB872105005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e68f36d14fedce2f5261f73d0aa829b13c47828bd140ab4773b471db6ea40d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZB872105006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b1f12ec50bcbc37410af5ce071555f6fed779719ae8d23201991167ff63b85. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:49Z), 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/CZB872105008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8c83c6b46a8b30919c0e43f69b5b7cd2e714c45812ee27ed93bda3fc97b89d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:28:08Z), 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/CZB872105009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e401f48309f885810976692e650866b0992d0ef3469904c754fc9a1dddc17d1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZB872105010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b6fff3273e7af4eaff35d57a4ecc605b9427476d3d2a76669d26db180d2b1e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/CZB872105012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee607c7a28622ba8026407212fb0a624a92dbcf05f52c2b03a347c14e7468b7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CZB872105014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0068ec28dd610b028ed8ab1ee3fd5e7a60f0601dbd7d301099ddda48afb274a6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/CZB872405001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83bf6ec592e573938161a3db2d183a25b20b9dde9f85d3bc367fb47f24f787a. 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/CZB872405008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f5113ff97178e6ed94fc405db1aba82ff335643217254cc7100f36d1d948a9. 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/CZB872405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8086f8ac4c290f854d9812a1811dcb908cabfdd60d817c59720cd12c3f78b99a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CZB872405011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff1945f1bbcb2486b59b316596d980dc6af8be650fd876ce8bafcf5e3694a9a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:16Z), 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/CZB872405012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94d210ac094bbabd60ca6820f460cdd2a0d12409245d7dbfef711ef9f2a220a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CZB872405015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c835281d8a14f87609534ac6b646d1e9895db0257cc7e2d38c2b5a2cecc4349. 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/CZB872505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c835281d8a14f87609534ac6b646d1e9895db0257cc7e2d38c2b5a2cecc4349. 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/CZB872505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26730bce8d5f7fadfc3e90dc262bb79aeb4456df95a893faef05de8124d3477. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CZB872505002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb187a44cd924f4a74b54ee341ff515c8ec9a582870041851306e3e0388bf493. 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/CZB872505003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435468d93994c02546814f14b252b8abac687786d42e610b1c9f18c795bf7d12. 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/CZB872505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6068203276901476c4bd46215ccbbd6a061a513322591497801f536590f2fd7a. 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/CZB872505005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac884f6513d9ae5275e42495e92a57994fc27ce7c69b5015c5b0a836487e3dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZB872505006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40fac0e49f5ad9655a1245b8b9a2931a2cc8934de977c9937554752daed117e. 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/CZB872505007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5941e86fb4f66b92eb6da4c4c6ab29e00674b76e27d52b3a5cbe0290ae7d4d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CZB872505008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b3906e96a3c81c2f2ef4aef310ec79304f1abb421b08d7ba59284154342437. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZB872505009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9096f90fd96448be3a8a3f9a706283b26e2491f1a47bd15310be4a4917d836d. 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/CZA168701193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3bc8cbd89c2137d67ee490f42ea2180dbe3c43d6fe6a67b719a1e1d79aa445. 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/CZA167600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e8f79b5dafe5915f23fa8f46866c0d75361f10e26e92dab03f29f324c8b4c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CZA168000446.
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 0xac9590ecd3aef612bb46d5c670bb58bc73e3ccccf8edd3c3474547ca896fb947. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CZA166600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c9472e88d992b3426834cfdfe280f21ed675bfe9b1fc87868cd8f0689d65c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CZA166700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40025980b4b480e3adbf80dc0bba3f3f46789c78b3a09cddf96e38273c0fc7fb. 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/CZA166700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad98c601edd99661a448cd47bd1a7ec8973a4a405d5017576cccafc321ea847. 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/CZA168000447.