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 0x9ff1846b6f139b0cb048b4ebce8b8ce1c695535cce18f6c967d9f21f1e940d6c. 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/69b46961-ddc8-4110-8dae-ad67dfbb3ee3.json and https://artists.proofprofile.net/proofs/artist/69b46961-ddc8-4110-8dae-ad67dfbb3ee3.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 0x1a26425ffd6c58c66f81e1143c85fe50c14110ac26d9abee292c2be7e015dd10. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:11Z), 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/SE6QE2017330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47b29f0f5b2b8350117b94e36693111fbc13876a0b381ff7cd6d4ef1f119e4. 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/SE6QE2017331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeb9dee085b2d31f63b825bd50be237e50ebbcba16c267b4edb31adad3e9020. 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/SE6QE2017332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d04f707c9301e53f43915a09a61a5fa0e90e99bd9d922290756a1be7feaedad. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6QE2017333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0ddbf22d8cc9145c3fd46009af2242f4f88f0a9985da695940a4d80591fed. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6QE2017334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c857954a5379dc8d530c00437a992eafca10d62908b7641a346002cb1887a. 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/SE6QE2130111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cd5d55c729b5bb06136f51e1ed9376eb86f6678651784c7734329e3561b35a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE6QE2130112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9af55b56303f39d0160ebf1d676d4f128e589173c1969271c88cbdad72eb8da. 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/SE6QE2130113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a52c2e911735c887f197012270895a64a2c87cfc17f22233cc77f3afab56c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:41:06Z), 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/SE6TI2116277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45403802b8069e8532ccd1006e28f93aad13930619d7d15551c6957bc4bcdc1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6XW2164108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f824d4d393db95595c4aca76e2fc99c8b748fd94f93c5ab75eeaf4bc2f9bc2. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/SE6XW2164109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae926a9f80b2f61151a26801d67174da60548ee32456fca9343f77a5166d991. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE6XX2199145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba68279ca8934f0db9afa913d26ad557742d6a4d01287f292c8b726694bb7078. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE62M2117845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d4d01935f534c2b6c0c66f456837de1770c1ca0099fb0554d99c4d71db0845. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:30Z), 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/SE6XX2130536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe1dc3dae66213a9b4e7861577c81f497703f46c057f7b524ef94c6ee65ad0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE6SA2237713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35157c0f9d0e7dc9c93904221d0dc2109f14616681617f7dffbeffa2345228b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SE62M2208512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c17f48763c232f33c7e5e1e996f52449c553ad15744a41e0bb4612fb5d153. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5BU2428841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072a9f45da35c2b6e74d46992c7e0dee1d33a2112e707bc101b7db0c276ebf1b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:29:21Z), 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/SE6XY2521694.