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 0xf4535d53390063632ed4bbfb0b37682a03706e9a867a8f3a522f5f5834f8f9a6. 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/45c310b1-19b8-4cff-91e9-a8ed1c67a107.json and https://artists.proofprofile.net/proofs/artist/45c310b1-19b8-4cff-91e9-a8ed1c67a107.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 0x4d20a0133b62a9c4642e65af12221ff2e32865dcfa8e922d0a07677bbf3452bc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/RUA1D1708865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2737e85093cad1c420092f40270b981dea5f9a378b15491daf29d6dd675b46. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/RUA1D1708870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4365b6e3a19829332a41355820815b137c80451dcbae3610d7025cef0af2d271. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D1708866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03e6cbded7fcee82e6602e8df7a478066bdb97d290a08c267d348f6b1b3bfc8. 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/RUA1D1800880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30832c97b2b512c9e1ccc70f658d3fc4b244d545235c6d61355728d96a647961. 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/RUA1D1800647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f5ebfe7209da60950dfea17331cce6ec3e454789343100705daa16f8e15ef. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/RUA1D1800644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456e7d8745ee459049f3047d99061cb90200aa7cc56065e69d7ae22ecf2087d. 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/RUA1D1800654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b26fe62d6a8a7ee0f3105d1f5e8244f95305315241a7b70cf0b237e0731da77. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/RUA1D1800655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab41e2ae9aa13b2c0f6987582a7c2682b3897938519e77d80c0d3067caf870. 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/RUA1D1800657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607f37dff9703e95956dccec67abe96d37b7007835a0822ec79f24e446a4fc89. 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/RUA1D1800658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c99c9e66cf3ff5d9ae495f43e8fa79772ebb92280f4ddab6760c10b700d4cf. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:30:46Z), 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/RUA1D1800663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7503076712bd369e9c324352184b268a795bfb275b5e82135aa20a1b20d142d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D1800656.
Ты должен носить свои грехи прямо на рукавах
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16b40b710e7326fbfdba09eb896cbfd652932c18394afc5a448ccfd526ca438. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D1707398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371084eb0a65054b5ec5f2c11d3a63c0e2a9552ba2163f05b4eb2f20492ac18d. 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/RUA1D1707388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00bfb5b5aff38592da24d03d3c78f3ff2c2cddfdb805ae1317001e9028b74bf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/RUA1D1707395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d299729b26d2b4f7684b1edd492bf85763113cf4c7fd2dea3e7831f91e2ec3. 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/RUA1D1707387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f7c9b91c849a650fa029426004c68fa3f294e1ae8107898bb909476640173. 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/RUA1D1707390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244c0040e689fdef1d61bab0ed672cbee808fb412fd91cfb8335e975c00108ae. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:34Z), 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/RUA1D1707397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbddf26da567fd71d6fc9faa3b35d741d48bc903fc7b919cdb745f3aec7f18. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/RUA1D1707389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2737e85093cad1c420092f40270b981dea5f9a378b15491daf29d6dd675b46. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/RUA1D1708870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee864ac78f039cb30545251281cccc1ac9594d7a9b99e8f6098200e5768932. 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/RUA1D1806323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6681463121e4e32cb1de49f276ab6839e1df3f9bb6b19b5133087f194d33bdd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/RUA1D1806326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff37b6be4699a1559f724b0596099555809a2124a7d060466b754a4169869a9. 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/RUA1D1806321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66986c325ffddde84d70494fd1b8b2204666bc4768a438d67f39b213b6d265a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/RUA1D1806324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51a5193fa69e5820788a88588c9e33c6fdfb305105343ddd55db43869c72e7d. 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/RUA1D1806313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee864ac78f039cb30545251281cccc1ac9594d7a9b99e8f6098200e5768932. 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/RUA1D1806323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e71b644c71479e410f1e62323d190f34fd4d422658cc8b29d885fefe70734d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D1806325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c384394a2f912ebd12db67affbd83e6e30ec637f2463d1e6690276ebd9f5b94. 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/RUA1D1806318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8db6085940a66eafed757694ec7b3959d0b313fefddc87fc2a32f8a8595c5b. 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/RUA1D1806320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c480773596c15f79e040a8f1c6cdcee8668ed83d1a47d7c430cbfe1ff4c17d0. 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/RUA1D1806322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f5a3d1bf723203cfe7d922bb3a2036d1b6e63b921d50e65e97187232fcbbc. 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/RUA1D1806315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766ffe0af5ce58824aa2d57f47e20c6bc66ff317843586e2d7337607613efd82. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:39:15Z), 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/RUA1D1806316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf28f31166938387ec9156184f366532393ae6e4eca488316fc40a163fd0f67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X1601636.