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 0x0118b0d4ace99947781db2a7997bfea8ddc80c959bb7b8dbe11d454a357fe50a. 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/c78bfde1-27c7-466c-8ed8-bc6239728712.json and https://artists.proofprofile.net/proofs/artist/c78bfde1-27c7-466c-8ed8-bc6239728712.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 0xdbc31e47fec15a1dd7088761ef167dafe19f2b3ec65ff4e1da3c597e8df469e8. 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/GB8KE2322390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19992d8a2f6311f1b56fee1d61b550e79b7a488237b6892ed94e957cfd402cc8. 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/GB8KE2322392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766af5137824f3724e01e207a98c477b14001b864d8f4340bac0307d9c362b0d. 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/GB8KE2402753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbd055a9f893bf542697fd18294ee72da8c9283927e8df4ac5601d9d1be37a5. 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/GB8KE2201499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6856ce318c4919b7d2cc9af559adc64eb18ecda78f96d1c7b98d2838b4b9ebc9. 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/GB8KE2201500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9be2e68b450f00edce893630ccf6c95e6fdeaab96112daa64ce948ad2ff357. 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/GBRD51900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475cd4751aeceaea4d575668a77220368b1ccec7accf97d331fe6b40bc8781c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEN581900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561e1587813312aca87d309428e0778c78a684a678d936060cec52da9d67c90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBRD51800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f183316d87fed8ca493565b3591695061b6f07d1a4511d32dee816c6c36fbf9. 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/GBRD51800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8493c633a29bb3be79640c466e774636f416e2878aced9c51656b77c02d0fa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:43Z), 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/GBRD51800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abdc9a65724f52359d0cf82414218e2269515d96502bc5c8a14ba7283c0a4aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBRD51800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acbcadc3135b065dabd307051d83d6d32e7cc785834d3a1e7e42df53e81731. 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/GBRD51800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6fc7145dc93290119e8cba9d49a10fddf7aafbb9ef9723bacfb5a80b3b154c. 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/GBRD51800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abdc9a65724f52359d0cf82414218e2269515d96502bc5c8a14ba7283c0a4aa. 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/GBRD51800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dee2afed2cf3a55b37796c41214f5d5e4e2133548edeae1630d5e00f1b76ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRD51800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7fad8c357b576314b858c2fabcde7e6b7073071e471d05afb9ed22b7711aef. 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/GBRD51800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e56d47957e5aa23199aebb99309cd6a91572904a7ae1e6570e26b741bfbe13. 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/GBRD51800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df3dddfe5595e7570a74b31880782c1ce55f2cf8405b7ad2498e89be8ceb3ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBRD51700332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092af306f02acb900f992b523ed206d12dd2745077c90cb7ab872d5cd447b58. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBRD51600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595dc3ca321985c638a60eb5f4a8c295a9fc2d55e6653c7bb0cd6c52cbaf0457. 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/GBRD51600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f12b2c6e409855216a04bdc80ec2c91b7940d78756abb6ef1b83d5074447c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBTMZ2101098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c69ac90eeef370686319cb4f5707af915a83c3c8d06364a20992ffd346903c8. 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/GB8KE2156821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38b49877f7bf923c12ff0c16ef86ced95185f57e0fbd2a6af3c4d1d650a122f. 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/GB8KE2156822.