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 0xf94d04a61a4abeae5b304b8deade30e0670fc58d4a5adbad9e571243c2302a2d. 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/9e1ca2f6-609d-4239-b747-5a49ae49e441.json and https://artists.proofprofile.net/proofs/artist/9e1ca2f6-609d-4239-b747-5a49ae49e441.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 0x4590dfebcc76657852d7e4285660133cbef92290c624cfa0a7cb124590ee46b5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FRX201966803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e4b2ccac06ccd2fd30ee46b2937789af03c7e95da299a2d82a134de02b4caf. 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/FRX201966758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fad61699ec48964d3211131f583b569be67c40baf4759384820049feb49bb5b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX201966792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7367baafa6e49d1dffeef5a496fe8131c46e6be67208b3a765d9f206adb3b. 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/FR59R1940501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d192f02a9fb1c0f74d85e14ebd90d0a4dae1f51393dbc83f2be90fbdcc321cc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:53Z), 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/FRX201966874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6d3bce1fdce3c36d5f56f11ccebfe1e6099b1d9d302a91c33e9c9d950d6c7. 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/FR59R1950659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b75fda25195ef7ae51edf5ddef93973247689e2f0ff5b47bc120910a976c76. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR59R1956391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340b11d9cc0ad00dfa715e42144788a9ad85959df818651acf3bea36ed7fcc62. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR26V2079416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21e76ab85d8c87cc16220b72a5ea636a184f9e29d3463695cd373e0ca4fb940. 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/FRX202061644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e710bdc3a7b15b9ff6e5b1f26072034b6148b046782abd5a8ace80a78fda8d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X42008532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd163615dec4badcb12af86f9e3a6c89ba94adfeafdfdd4ffb1da10edef18065. 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/FR2X42008496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8518b6f0d91f39bd8227ce25ceeab2dd4bdbdc26e2d19c90d929f60159c93e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:26Z), 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/FR2X42008491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de383c00312c4c5a25e2f1eabed5a5e5a4a54362c1721efcd597613ebd7c339. 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/FR96X2138441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c87101e2ec4e9ffdf3fe99e2d00d24c3318a205673001f46b304e1a0a81f9e. 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/FR96X2135296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9bd037d84f50aee7b0bd605d250bdf14e13d01b9eb57be0ff5dd1279ceaa6. 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/QZN882155707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fbb0c8464684d2ddb99beacf9391f4e53ced0144420592cc616533b18f8376. 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/FRX282257872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0cbc16fb14d48179342d826c5c4ab4f871ebb942ae0923ad94659f8b03c0c9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZN882155711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08518e36122f11cf87dd0dc192ca7981d82f129438952d93472630d736077ff8. 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/FRX282257874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102f6f42816fe819149835dba3c9bf299e62a9043c0a7dce47fb84042f2dc73. 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/FRX282257866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9864828b1b04b348c6cd4cebf56bf04f9fb3c215f23d7ee35efa7d7d710ffb97. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA082206005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba955835d7c6b8fa3a9b17f44eabf5dfc9380554e6be6b01e1af0147abd717b9. 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/FRX282386578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b479da21bc6441101db0a09b5cb99354382b0c346f90d0b119e8334bf9bde80. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA072387834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaeba44d88e38724fcd219a1d1a34c838a0fe875133cfb83425a32ee17551f4. 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/FR2X42403456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7e4622966b70ce9f8521c030fbc3f2c1264fc7b43aa17a709d0d3ecbb959b0. 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/FRX282493426.