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 0x15ee7e5c738e38b6fee0fa52ab275801a4804ceaaf0f662e97f5962fb0df665e. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ae55a43-6637-42ba-8050-e2e85d049fe3.json and https://artists.proofprofile.net/proofs/artist/3ae55a43-6637-42ba-8050-e2e85d049fe3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything Is Understood, Cats Live 100 Years
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 0xee2b487938942939694a850acf856655ad81269929802dbcb12374f804432752. 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/TCJPT2251689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc6f4ed9143f87603d5ab4ae8eda00b7667c5c920642d70ba4b9a96783c2769. 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/TCJPT2251706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a5b14c4f3754b4cb7fd74ece8dd56d28ea13d2a2873dd7142494f79599474. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPT2251737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c2303334b855fc990ada97353564e9e1304868ab285b09019dc37b088f6629. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPT2251739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c62059b7c083713cccc447919bfd63edeb4d7fab8db7348f0eaf03717e93bdb. 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/TCJPT2251758.
Humans Transform into Telegraph Poles When They Die
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579e4f66e9b89163feeaf99f0e3e705ae8017e3550bc6ab81ec646e8abed16f5. 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/TCJPT2251769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20d2646bd801ac414eac761c869ad436ba0a266f19d656ac3d0920f2271afb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPT2251790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb390e24573723e0cdfc43d7fbd58607a5dfd88608661423959190a810dac0d2. 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/TCJPT2251794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5977536d754817baadebdf09f0a1a5c21e3f20ff8758305f5396d9673e22836. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPT2251798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47ef60e496be4f48537d720d8e2292e6006f2973163c6b3a9af97fb50396b2b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPT2251808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf12879bad074f88ceb7704f2b17d8f4ccaca85961de5c1dc197b9faae73c9. 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/TCJPT2251817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9fae8bd08cfe98d011c0ea9ac542bf6f78a59c4e59c563952ef931bf19ab38. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:29Z), 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/TCJPT2251740.
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 0x8b034ff8790b10ae4513afc938706082a65cf0b21a119351e8e14c275e268748. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCJPT2251733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b720001c7eeb7cbe920dfc0501772c52aa504eafbbdc1c949a38fe3f5258a9. 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/TCJPT2251742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25fc5f531c66251381976e4b4b67945d5d77017106d0057b73d1db0b1d9b9d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPT2251757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e631f1415ce14a558b2b9bccf8f337ceae5da13f0515513762cd461b14a7b2. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/TCJPT2251759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b51d2cc8c92642f0e7cf9cd4453c0bfe7b64bd265d71a40d6cfcf417c7ba02. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCJPT2251764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9ee4f5b349d81c62c411c8558859b6f2843b230fb786f38cc6f4df28cb1f4d. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/TCJPT2251772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a33fd3b219916ed3d013fd056f0b5666e42d0558e9934fbc30573a94f1fc89b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPT2251775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4de6fbdb2dd38937266d011d3751fe4bd6118bac3a5a33f4028bf7851d6c2f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCJPT2251788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5373732dee5b7845e0dceaf1aed8f71ed1458d6c837bd47a311b0915fa664a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCJPT2251797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7fbfff8c0ffe5259d02c551c84a2c7951649bbe91ccc89dcf4d9eb983a6ec2. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPT2251800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259764adae13e4fbbcb4d306e60b79160b5ff0665244bd0a954ed508cd94f663. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCJPT2251801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e04c9f9ee98006917d32e0b01385d22f5c7da9c0f5915cf3d4aa1bae8d44de. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPT2251811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a433eb5a520bf1840f56a762ed5f1bec5eba245a3ab0b4fff4568332092e72. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCJPT2251819.