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 0x59e416ca8726ef41dab78ad079e34df8cab4eb7dde0057fe44abbd1c3d51295e. 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/451704f5-47b9-41f3-8f18-78a468aab322.json and https://artists.proofprofile.net/proofs/artist/451704f5-47b9-41f3-8f18-78a468aab322.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 0x276cce2b08762db6fcdaf10dec1b6c25d45780f7b61274adf86cefbfcb2880f6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZZ662317062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af1270147c897d750bd6c4f2e92418d3ef22359412b9def40c43ff2d35d3e92. 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/QZYFZ2354580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a01065d1d8fb51fac1072a8ff010a399e72eb3bf2fbfcef538e6f09dc66c7b0. 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/QZWDW2204239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf826de7a0239249f5ebadb69ba078b0cd4793bbb50d0af2976098bbc687bc60d. 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/BK4DA2202293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaa167a35896d9641e67e2977d54d565a90419fbd275050a7a616c9760773df. 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/US39N2201068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0b2bbf2e2eb72782b9b3b8049110a64af6a52b936b2bacf722329b497f5fc5. 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/QZN882261055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3a9b8d2c5c8db2123d452bdf796da1ef3b509a025832d296e65f4a4eca3ad. 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/QZ7R42250188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c3a27d144a5b6f87ea65f0f6a812b30ec0ecf786a7ddc3566d34c5baa056b. 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/QZ7R42050449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0a983d1c5f9d3d776f2beadf9d4d63103c32907fa7f4dc36778ed58db0e4d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ7R41952409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed87f307e0d9e32d1d3bc6a32a00ab73852909477b48e8aed21f0849e637370. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2202375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb986c17eeadf9c231d68996a5a51d8e10d9935e6e6dd42ff85f1f7840d9f01b1. 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/QZ7R42050240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420b6bbccec57f4f2b445c526066d88093906d6b872c1a61c87811e7c1565d3e. 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/QZ7R42050654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a71c6753e53381a000f6e4648fbc8408f2b8e6ed3b38094437b77a3fe6673d0. 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/QZ7R42050655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7cce2c1dba0cc52947a0b01db173c74754228792c21acf0a88b11499f0e4ad. 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/QZ7R42050656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bdefd410f5ada20eead0650ef746ec88092086740bd6ae07a65fb10f4b46c0. 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/QZ7R42050660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58eef142a661431a7c7838c1a571f5031a3f88d5c53209b4185c4eb637c89e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ7R42050661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf97db4b10d9c598ef0c58f05785c7a77bbbfc38fa1a3f5e7c9f185e808d5ca. 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/QZN882415530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4032c2abee1af7f4cb49ba6411cce1d05a708a6f837ebabadfbb138559a067. 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/QM6MZ2256046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc1922e0162a0be0890248272ae382a449be509a47bd361f2b6078a35e5d0fb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2256047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550cdf536972f8db60d847e2ad901dab42cb9461054d49b1443f0880d7dee384. 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/QM6MZ2256037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc979942b6188c3f8a703e1c92a0b3d60e4d2b441b57b71ed368e1df35f41d937. 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/QM6MZ2256044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf31a0030c96a63cd015476ea4690e88c6539eb186858610a375201cd141ff5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2256040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6dc1861a07cf6dc3ae0b1c2f6068108dde6d48efa261d77d1ea10c7b3eb1fc. 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/QM6MZ2256041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2abf1e4d311db4e8e56aa17a556719fe540e26f74d1841ba8f948b914d7af66. 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/QM6MZ2256042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988f91cd3e6806238410c6a6b534314d0d704b76de1abf8d95f4e6f77c99d96. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2256043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f971b9bee7c55d0cb85d5566635ae0291a0f8834ef121ab9a73b24350914c. 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/QZ7R42250069.