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 0x206182300ff820f0150b8ee4fb13a5433e4510def03733afd52a79eca9ec24f7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9228584f-3f6a-43a1-8354-ef62f0e2c1b9.json and https://artists.proofprofile.net/proofs/artist/9228584f-3f6a-43a1-8354-ef62f0e2c1b9.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 0xfeac153365cfd1172c68e2c8c5a9d5a17180f1e4d54de0e7f42d2024f284c0a9. 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/USPR39200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d5f8e8337bd125828a6d990531b74b082bdf72817fb9dcda4c6ef5351f9ab. 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/USA560555095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00a4f6fb9b979c25a7c27c16f74cf33c67f611ce498af1a9c2e6446a86594d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USA560555097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a13a7a7e84181e05e02f06751d440a772d70861426a105075ea0f90260f00d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USWH19902289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc729d704b58701eb02a3121ed09579a898716cdddd81f7e31bf568a8019c2213. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/US4UM0710028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6afc4022e4528243c4d36bc824b323fdd62fc4826e3f1a066bb4dd0b5ec72e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:39:49Z), 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/US4UM0710029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae34e22b2386b65b365feacd06926d8550f8db5ac3420a2a54ced3d4adf68a2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:56Z), 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/US4UM0710034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830d8a9043f5efbf63fd71dd7e01aea0e405451fd678850122da631c56f1c53e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:15Z), 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/USY251718661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a228db3fa42971563eaeca3ce01d69136b957bb6f4c502c202c22a24de15ed9. 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/US89R1013738.
There's A Kitty Under The Christmas Tree
There's a Kitty Under the Christmas Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40483282c8ff6703ccf37eb8147b871cbeb028c794cc5e7f9f66b626e0afbe5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEMV92200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4218dabbd81e0137fe703e995bd79dc7f4ba615f935b034d8422831cc3cdaf7d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEMV92200190.
Cool Covers - Smooth Jazz Plays The Hits!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5660ade97e427010db5023ce26f1149a0823a4381ed53173a79d4e572444d1c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USA370639917.
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 0xef32d0e53903ed5bb7ffb8ea2899c98316b3d02129129fe28bd522c7a6c98768. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEMV92200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df8b93171f2630c759a284aa4b9fafafabbd5afc9c2107fda0e75c41918be2. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DEMV92200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f7e19f0d061e7f4949a5513d2aa78fdaa91ac6dff7510783b6d5e8a001a489. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEMV92200189.