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 0x9ea0a342a01b1584fdedeedacfdf738596b2ee64a1c9eb40dd50545e37b54e3f. 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/6c00e0ff-b871-422e-8281-b9c0c853307a.json and https://artists.proofprofile.net/proofs/artist/6c00e0ff-b871-422e-8281-b9c0c853307a.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 0xe856373bfa97f683ee07fc1b2c9c67c2aed5374b9ae2eb07c0c1fe0cd89256d5. 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/FRX201862671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19cf01ec24bba41f1d1bc2668eebba5743257c375743a1636b309d17a3fb17. 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/FR96X1862740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49584d9a0a9044fd2d4258af3384cf19951767b3b0ac4eef360c841aa5c376dc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR2X41991198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef64d716c01544c8a4177a3036b0e79ff6c556d1849997a353da35c62b42bbe4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR2X41991210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb1564e0f6b859121f666c5a7a0e045b416c8d52dd5050dea2b03ce73297f96. 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/FR96X1870711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f288303e42e1234c80cb2db15c3a47a059ea98013a44dcc2447fb8714102c0c. 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/FR96X1946815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6223d0acfa5e5729e1cbf6e397253216f02c3ec2a656cb7ccbfec6d3ce984. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX201906642.
В книге всё было по-другому (4 раунд 17ib)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f013ba1389727b5c0d69d7f29bc20120d6f659b0929d942ad36f163e4a682. 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/FRX452003428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd873b036b4c856bcd49a30f156b08a4015e795c93a448f27d6331eb680eafae. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUA012200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc56f12ab01f3ebc9f71833760769e7e264c6aacad9870692f994fe261cd87. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FR10S2328551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e859261a606cef06df0968ed3324b6d00a6ccc61098fae7bce1a9307518d4a4. 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/FR10S2328552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dd33c8ffdcd3adc87db9c2442892defc9b45613a0eac68bbf784188ad406ae. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR10S2328553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506c6ff706797f6606e478b29aa6dbff0229b40e0f4a31ad8c206a59fb6cc565. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR10S2328554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b7152d548000c059659d15a5350485556f5b3f6b4b77831541d05b3dab22b6. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR10S2328557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03337d2f9ae4c4498e8466d4ee86a8855b635ad84f2c760778fdd01d8dbb0a99. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR2X42314565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea03da64d0c130db00062d36e650f7445862f1dac9dbbbe3de3de31ac4e5ede. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR2X42314567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed33072162e2e7e3769b3477021e005e25010291a4c106fb0f5daaa17b880c93. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR2X42314568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77336a3140695ff9217a0835d1a3f21e3d66d1b5d18091d1813065c9d6e16c. 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/FR2X42314571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea163b8df47bb655ff2d8231f199ae6eec3159511fb6ae38e59b7be1126a7b3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FR2X42314572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb02a334075515d3059006d299671082ca3ee817888153b870eebecf9e8fa57. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA082326851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b8efa0d850141394261e48ee180ae67dae28c89a484f3b06d597b86338713. 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/FRX202413891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8302494173c67c34e3f3c945d096bd39a88c72eeae1fc60372d303a9790ef796. 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/FRX202413892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e822ab2f9e9db37695aff27b5422d9434826f55d137b6f9919bd304d9e2169. 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/FRX202413893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a5021735db81194fc31de055f760fac9c0f88d01b51519754a2469eecabbaf. 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/FRX202413894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd70425cede9a3a91ea2d78202fadfbd785e37b719e8ef0a6367fb777adc2ae1. 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/FRX202413896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e7c624c49fd924c4cdd549ff378fd1763291b249e91486002f24be75d6dd98. 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/FRX202413898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a7ae7f6f87ee4199ce552784176e13e5812dbf3e0bd1536a12029e8a6a3586. 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/FRX202413900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27969be0b4f6c72a2fc0bf446a98d98a226e038d94ded6a5b501bb93c273f59c. 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/FR96X2450504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118695bd34110ae38bea25eb147b0b051f401fce5e2d7223686548551f34d5fb. 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/FRX202413902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a357d70d146e769829b3ac1ea9610daceee99ea18e59c596f30d4cef6b223. 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/FRX202413904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92644b1a92a718d25dcb8eaa44db4c02adcef8ffa1ccabdbadcc7420e52e0a5b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRX202413906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016085a3febba49b299c8a9bbd915fbd0e3546a63fb719f633106f9fd5de321. 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/FRX202413908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b299e2f17d7f4031a27c6b18f7aee6a90513e41fa1c086067bc03375fbf3903. 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/FRX202413910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878fba9d7abdaf049113ba2a4a6c91d62b1e05ab63be667fdf7e3ceb23cd790. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA0H2425151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ca8ce7f499d0b13b1e8ef86fb0539888c527891ac3e24a6d60d55812c10fe. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/RUB422402987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f04cddb27bc5adc65117e656ba0fe5b50742d8b316f8c340c0094d336eb34d. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/RUB422403563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cfa3f57ea314a516c5e91348dca0ea31c826c82d87a3ed273bab35f3ef5202. 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/RUAGV2410515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f52520b36daba5e07ce7288e57165df85b1179902ccbaaaaca2953394e4f09c. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/QZL5N2557570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72adc6a7013aa9161b486a73195879e4d53df78f73d0e313c8011e503125213. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZL5N2557572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485e5e464b80342f5e72547820f8c7d995a1055fdc16fd2d3f8a7571776f7e56. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZL5N2557575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ac1fbb3a7d45974e9d0d577d74f002b42ae611919b20e710b5f02c0a398cab. 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/FR2X42127882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a2ab4614912e9df44adf9ca1391a152e2d9903544d87ebd29fd55fa5c2dbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUA582100400.