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 0xea361077fc0b4f5644941b91296350c23c6cee6362ad54b193234d1b2974d8de. 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/bf4d887d-6a50-44b3-a27c-1e93c64840fa.json and https://artists.proofprofile.net/proofs/artist/bf4d887d-6a50-44b3-a27c-1e93c64840fa.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 0xb23702940c58c3df1e9d4eee41b2c4e1fd43a0fb4d70ab970f7a691246e39096. 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/JPS801391780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69448e3f330222844d7907e5190a08b34f543d527483654b536d51f5688b4a5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:12Z), 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/JPS801391783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c8a6399449299c0d0935654374145d745300b63b8f7cf94f6ff7faee25eb3f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:22Z), 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/JPS801391784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1f72496e0dea7824698f6d50fdc2412dfa436c6d03bad3dcbaf0c297d0889. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:36:13Z), 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/JPS801405367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9f120385c29839c46eb98ad7c6f97648e1ae93161ce3e881a2ff3d20abced. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPS801405368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fae104a7a042100ff389b7a2a9f048a7e1a5d7ab4054a2d524daa1bb1115b3c. 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/JPS801405369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dacb8f089f322e4e0d5baf309ace94cbbef89eb6f6b7c8e6749be76c8951574. 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/JPS801405371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc04e5a12587c07d0ef74e5856b3a2223d39909a8f3973307a0ca85467fe6f. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPS801405373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f21806a51abc4bb130afb3cfcb080f951b32b646e302db97fefb7a91c82b386. 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/JPZ921703308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f167d5ba8ef53f6de06f0785bc65307aa7ef408571cdb73f5ae1e345e1f30. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:42:52Z), 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/JPZ921703310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b591cf9c4bdac6f4a87f37d0de159955ab0de1684311da665cc6f2aa8377f. 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/JPZ921703311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f92d3b7df9705c90b7c706aa7a72593e86abe8c7320456d4a0fa09d037c27b. 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/JPZ921703312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f9bba2b0655df4838bc5ebf4a1a26ff2301ea5fe6f745194b94afdfacbfa8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:23Z), 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/JPZ921703313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a14eaca6ca24c21229605f0ce6f3cb1d1d1186198ced4481000c16b30d0b8fa. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPZ922004811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc073d8c393b20dfd67371510f308fbc31531e8930f755b0477e3cd5c11d4336d. 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/JPZ922004815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee73e918bc0c28a9e13c902cbd414d05f698628d4359892deef830b35d4df8c4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPZ922202781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac02ede687add44049378c8fd74746859e563228edb16022ffed115be5306e1c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:01Z), 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/JPZ922202788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae957de086467989c28231f0ad33f8a82f4e7e5447b716dd7d27af6d7af735. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:59:43Z), 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/JPZ922205407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a7b9946b0d5d53f69334a06e1d21db0964cd4080fb100998e8164f3a034f4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:23:34Z), 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/JPZ922209644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ee4b01c160c338456926a9c9cb49035975d3643395b0e245845f35619b8fa. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPPC02411256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8797463ed8bf602cd856ddf1373b4d0bc39de69f7ffe45d420d21732ecb67192. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPPC02411973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490ef26f730285d5cbedf4f78b32f870f4aa70cc5e5bbb655cbf5dcc519b1aa7. 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/JPPC02412725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8bb87874f35f609b4b72c4b4074ea0068d8a8663cd0b1598be3d1a37cbe167. 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/JPPC02412727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5234a3b8f25dbc9d0701f785d168a807627bfca875da055589e8dda70c2bc1c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPC02412728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b57357cc776650391da5838875303076a4ff6ade9c23912094bde729533def. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPPC02412726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ee4b01c160c338456926a9c9cb49035975d3643395b0e245845f35619b8fa. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:04Z), 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/JPPC02411256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5234a3b8f25dbc9d0701f785d168a807627bfca875da055589e8dda70c2bc1c. 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/JPPC02412728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa60183dd44821e4b21c695929ed45e1032ecbe1be0a4ed4e79f5be8eaffc4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPPC02412729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a7b9946b0d5d53f69334a06e1d21db0964cd4080fb100998e8164f3a034f4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPZ922209644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae957de086467989c28231f0ad33f8a82f4e7e5447b716dd7d27af6d7af735. 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/JPZ922205407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ee4b01c160c338456926a9c9cb49035975d3643395b0e245845f35619b8fa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:47Z), 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/JPPC02411256.