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 0xb5635701accf9161ff473e84707b4da2c152c002cd4c52c5d29f04a85e2a6666. 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/03f7d419-eb01-4ed0-a857-b930c04a3654.json and https://artists.proofprofile.net/proofs/artist/03f7d419-eb01-4ed0-a857-b930c04a3654.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 0x5760dd12e34dcbc17bea0a335ed2b50c6652cd810992e1e38457ee922c42476d. 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/TCAFJ2120608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a246bb90a47a211243dc1865a5b17f3168475a79e3c3c56798e59ee8e7572c. 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/TCAFJ2120687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28592df2b897e12976d65764efcd41a44105c70508ce015a673dc9dbe4e8794a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCABP1379704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba11a2bd1002e411d5b0b85e6af9ac8ec255ad7a7953d3585bd86ca2fa8a606. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCABP1379705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858e30d5daf104043ae010ad78b988eccc25bdd43ab68cf7a9fa7c22f59bb064. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCABP1379709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6c44984b82f2650b707bf03a94625f224f669698d4280b1cceab0f5c254e7d. 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/TCABP1379713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd9bb3ae0284c550ce34e986875907f7d826430cef60dfe6badc9a5727d59c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCABP1379728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ba884c4f98743be8f4bdcf1cef4ac2f719fe1c37c3a72868b07bc43fdbf10b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:20Z), 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/TCABP1379737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df5a56588f660cccdf9fa674bcfec08c2208989677606b67580f864570895aa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCADW1876699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce45c2dd76bdc49d139fbb01da059e886a4c286bcbdbaf33e0f023d227091c2. 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/TCADW1876711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8a3e1dc2eeccb03d407d3e4043bc3547e39b402fe685eb38a60bcb795f1ae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADW1876723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c9d06e340aaeaab8746e9877f160b58782cd232ecef339f76a9045adcea32. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADW1876835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4510537e953adb680b915dbbbd895be17cf9827a5e973c62db1909b4a402da1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCADW1876838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375daa3a95a5880a33d56ce7f750c2eccded47787c9ffa4080e1a3d907625e2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCADA1766326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa737dada4688eb476a866f9f7dfee7d1a4c3dbd3eed37d2f8676a4f620d40690. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEG1965360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25226ae78459c957e7970fa4cd6139ab48c1bde474abe57fd1ce18729accbc. 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/TCAEG1965363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9429b8c7b855c63c03e4f85863b18737650353cd4c6d26e1be79ac49e9594c2e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAEG1965366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383ea2365109763b63ef939b51907395b347248f221f6bffae31ccd0560dc8b1. 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/TCAEG1965367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622c78b0846915af880e8890ff799bbc42e3f342ceabb70391f25d3df7a3c385. 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/TCAEG1965370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01175c8e13027379656df2cf121af2a959582cd23136ce6305161e4eb4b060a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAER2024746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d5028f290b5a3abcf556169aa98db9c117f8632f60516b306e8b7cc75429aa. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAGD2272176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79adda8c3dcddb6d1b3773b10e9e803152a09a6133d097536dad0623c05bf007. 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/TCAGD2272190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2133f385b1e0a74abc98ba31701c6c48266b486a35cc75ca12a40ac6b7079043. 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/TCAGD2272227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4455a13c5fef5ba6bcc1d0a8fc6bbe857bf22ad7fd04d9c693ca27d552c4d79f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:05:15Z), 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/TCAGD2272231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59df647c2e9e3678e8f73978e3fd9e1a30d5d0741bcde1644004701d32d053a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHF2345646.