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 0x2587edcc0cbe69d29a8598bce38610142b474e034aac022455d1408f474f9f59. 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/c436e2a4-c838-4ddb-b2e0-d68ecbca67cc.json and https://artists.proofprofile.net/proofs/artist/c436e2a4-c838-4ddb-b2e0-d68ecbca67cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Povídky o zvířatech (Můj obchod se psy, Má drahá přítelkyně Julča)
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 0x32a58108852e160fac8145ee6e53047f7d84121057d99e3b9aa4c9654e3fb331. 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/CZL721420101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bad03da745278cda570e84cf4bab63ff681c71c612bafebb768529a14577744. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CZL721420102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41301dce454ff5ad3e565ce84583670fd7344d2bc709b4359374bf3b22d91f3e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/CZL721420103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaef4e28eec73476290752b81bb2d0d9daec29f60553cd1673ccad02a92b8a8a. 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/CZL721420106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933d8d192e170d9828f7b3f59ddb400a98f505c85cc64fe6df4c94b6e60b93f3. 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/CZL721420108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac40f6cb0adde3453dde623bdf47736d9fde990a5edb96f874fede15b7d6799. 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/CZL721720202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ca20d18aae3f27d7da1af75ce4cf0a3351c083e4ec4f393071defb0997b97. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CZL721920303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaede6eb09edfe874ada500d59f98a4ac819a0ce2ae20294c89cb75eddb38520. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:02Z), 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/CZL721920306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c34c7c8cb7b84275f9009f11b6bd65c255b015bcdc52ea4c24e911aca62fdfc. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CZL721920307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80286743c704847fbadb3955c57f026708ce9795de3d5545bee47b3085e8baa8. 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/CZL721920313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e242f38bdea5fb4f38f0f13588ea3af68c0aed1f42c5951ad67c902df2e6120. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CZL721920314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de62afbf4355968872617296fae581d806c01a1f1a0f74938fec440b3937414. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:08Z), 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/CZL721920315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e615d48e1bfea751d19324f0efb8d8732b0a7ec8ace0aa3ef7ee9d1f6c9acf1. 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/CZUM72300699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e0f3636d4fe6af5f9d3e6bc1fd543c7405f0c7b91a733b44e91c2c27cfcbb. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/CZUM72301059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c1c60a8b1e83f4b4a7ed2fb41e5690e94d097f0bdf7fe2f4e44f9a423e18a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:34Z), 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/CZUM72400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48858f83d9488c74ea3ec29fcf678ec466637c22f2ec488349eb443504de3f24. 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/CZUM72401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e949fdcf1bb3108fd6797bddccaf08555d135a17d7f84793b869d9122f88334. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CZDV62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9685de6d484a93075f43582f086865bed1520df114b92e8b956a8712c6846a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CZDV62400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cd9c0e2a683cb972482d090acd7b5dd63dbd9cb487c3197445999a12dcfea0. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CZDV62400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b35a2ef364b491a708d3ffc0cc07f5442a6adf7dac8c10bcc6e401f450c45ce. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CZDV62400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85846baa5134c6bf3764306617a1ccb3c9b01b8af49d5b059bdc4ee7cf6f1c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZDV62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd6821cfff4d9b55d5e6d9fc463fbd34cbf8e133c51464ce82771ae98f66783. 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/CZDV62400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d54496212916ce5082c1cad55cd7b66827bb17aa9b864d593911d59542852b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZD551400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd92a45e98c859dcd83401e5602e57f8058d00377fdc6641df3503bc1b0d465. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZD551400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739c950d1005ae70329c4edc561e64a7582dad7e3285592544bed6331981e81a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZD551400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496338a7de938bb17ef568b256103f6d8d283eb4f1b5575268117f48b41ffab2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CZD551400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e45549a1505d4c72dbc44fa6aa94a0616cb751c677149ee004ebd60305bfdb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZD551400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e5eef0014d64dc447c89503a3a12f2ff5845ce59d62828ceff2b117825acb2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZD551400037.
Malý princ (Original Cast Recording 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccf138ce2b06dfa84e5d7df25405ba77c182ab5a51865e476bf00f480ac5c89. 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/CZD942200163.