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 0x99d4eb1d17e92265a53547e052c0adaf5152520ef9d6bc47203bacefafd58a2d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7f8adec-a5cc-4187-98bc-990ad0078e55.json and https://artists.proofprofile.net/proofs/artist/f7f8adec-a5cc-4187-98bc-990ad0078e55.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 0xb07f8f40f84a2f3dd29770fe6f8d2317e83f829c5c44021f387c9fb63a141bfe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6QE2468876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6148378c5b82d20632ea7db758edaff0117c502131db1e80ca3ff1414a8700f1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SE5BU2553756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82470a8311a340d47273724b2f62dec61e6df341a15d3db39aaaff8ae02d497. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5BU2553904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b4672251ff8d5ae029ab67007c785e0400f653b72a9b24cff44d0eb8bdb7c0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:06:59Z), 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/SE5BU2553958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13b42d58bcc96bab6f40a65291f3eeb5bf14cf3669592187f5f860e6bf7f41e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5BU2557929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c5496e24e3974dafdb9c2cbb4c96c927bb553b8950856c22602a0e55bb665. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SE5BU2557879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b0b1449219be65ccda51c9250e79db839e7eade49853328dbac7da7eee1e2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:02:46Z), 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/SE5BU2557890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d583ffc0e102fa3548fa976f74a30c87741a2302ae33edb5555f0607096ccbc. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:42Z), 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/SE5BU2561872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7af2a5dc9426a4121d588f86833b437fe09c1a2391ecd8dd4abe26430d742ec. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SE5BU2561874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c259aa271011b0e8b32a020b5deedbdc7ee364c7b6192c4fe0f66ec71b38d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:06:09Z), 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/SE5BU2561876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf8ed316dab288e48da282817d366da210c8b90edbe6288cedc59fe89f759b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE5BU2565222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf67a3b31a6608709b2ddd45fc2d38008dab0f397afadb4e214c4df27eeafe01. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:04:12Z), 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/SE5BU2565153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd60c32158fdb9c16df01bece964318a90ef2ba4908cf80a0cdfa86b59bf937. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5BU2565165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15524227eae33d5e7faa20844ab4a9fdb82a8dbb2d2f8c8d56a72b792a15ec1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5BU2589548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914c0fef0bf58e22a9616fb667b3f9c246b762bc30875545c0ec1b2806dd0b25. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2592842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fd1db52cbcfd3db3e25d399cc6ee60c2735d280eecd43231d94bf2e29dac49. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5BU2596383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcf91cbc11422083219774a9efc39426dce69964924fb3abec154b5a98b6ebf. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5BU2596384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eca13292183bc1a6336cd1e59fe08664cd3c2e74ab2393c23bc49e4d43e17d1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE6XY2500394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba88ec98240b7e1499023f57392f4fa32576faa02038dd17c01dc869e92fa406. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2598989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208934b16bed9b5263fcb1127809105ca92e0019f31b63fbbb3ec14087bf5a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XY2502994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e21ad0a4d0f4294902d84da8920d4802c7ec3da2e1a63e9ef9f686f13851e2b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XY2502990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12375c8109a57013d21b4fee3508dc0b2bfe927add67e7aa75e7b9c9d3797040. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:40:16Z), 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/SE6XY2502957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32358340ff905e872d9e65b582e34c8c34bd91b866a060a390a56d6a547bcbd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6XY2502956.