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 0x685dc11d0b88794cefa2ccd357b68f84be44f86707f1d874d1520c61a970a791. 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/dd1fdec7-b729-41ad-a764-55c5056d34ff.json and https://artists.proofprofile.net/proofs/artist/dd1fdec7-b729-41ad-a764-55c5056d34ff.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 0x79471fcc9e93f12f504d7e99002ec585a806e4cb9e39fcdab6573b945a09e007. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/AEA0D1864733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb94da7d423f69e2f0d164970af343783fbd4b02ff6014c6cdddd3a07b19177. 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/AEA0Q1978955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90efe51644bb2b52ba49566e4f970084287693576274ab51e62ee00cb85fc8b0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AEA0Q1978956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5924b65801bedcfd31632189e79ed02670cfabb9f3aec4f86e81e3e9785c71. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA0Q1978958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53f5fc3cb369c94eada7a4e98411229556652b119f2ee87aaf609761daf830. 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/AEA0Q1978959.
История о семействе мушек с хорошей концовкой
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3623d509525ebd014c7ee09cc66717d8f2d5646e3beef08f5e3474805d9d1d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/AEA0Q1978960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac4afcc2b3f6deadf40bfb32954c6fe2fa8ab9b444a53f7f4010cce16d771b. 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/AEA0Q1978961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab08cab2cfe2115da8cc16a1ded0d1f1ce398d17f99d264ca75997847e7af012. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/AEA0Q1978962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135ede27f031c08b8c4c19ff950b70fab5d3acb2f24be855a2b5e53212b493f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/AEA0D2001326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd18572647fedae091fd6f659101ca40bbfa0a1bfce4711498d9871cc6a8e61. 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/AEA0D2062680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6a35dc315e6297bb6460ffac843f907516beb53f7600174de2d422a719e8cc. 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/AEA0D2062681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a639b76dcdd75a80e28175ab917e461c1756d0ada0c4b446b0c14f469c0697d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/AEA0D2062682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b358bfa6cf0bd2aa80b7d53706dad0d31e155e0a16c7a6734b9474f32f2a56e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA0D2062684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dbf018b4b11f9d5a4a453d496e8a596c4266711d6d2f4c66b4ffd3d929aae5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AEA0Q2158240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cd577576928a122b178c8c921dbef0f9e51cd93b24b4339a2b7437651d6a9e. 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/RUA1H1868058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9197a7be4764b7f0cdea752939ea3c944246f76fb36d5acd2249e57c5489f2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1H1893757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e00affb5622f17f2410867ec8bc897c2c3a7a4eded4acfdaea617c85c6ddbf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA062228801.