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 0x378d28de2958d5f2dfe58bedd57741004266abb068b2018ec4dfb6443501662f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3103d7a3-106f-41b0-acd4-11469ecc8d07.json and https://artists.proofprofile.net/proofs/artist/3103d7a3-106f-41b0-acd4-11469ecc8d07.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 0x245c08c8a2ffe319af5d045b58073533f9dfa6ede4f0b262c5d7264f626529ff. 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/QZVUD2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c08c8a2ffe319af5d045b58073533f9dfa6ede4f0b262c5d7264f626529ff. 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/QZVUD2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e1ddb1dec137a41689b08b55f99f3e6c6ae115cec8063635174cb5767567d0. 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/MXF012300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdae33964c6e68ccb132ed8a874dc3690334c059d63b2eabc2e93ca317baa3d. 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/SGB502331471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec85adf4e582aba781a5937f73e5bd2c39699625cac9ca2396f3e552563765. 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/USANG2215442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d500f9e19d1e6b130fec891376a6b4e88bb503eaee74538aabe83ecaabae47a. 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/USANG2215437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4e955454c34b8bad87f70f929ce87798a76c29c94bd2ac5b8eb35f79a67742. 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/QZVUD2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd4dbcda59c79df1f4ee9ec867afa1f11ca69f53bac020b28c156783ec5f026. 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/QZVUD2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835831e549ea2bce7d0b462e7ee4a07ef1367aad1bb8bce868394a66e440a27. 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/GXBAV2301179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a90039b7c5050c6c521ed4948e63241af28146df0eed8f6fa9c36658a55cf7b. 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/QMBZ92470540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5976185f52b0fa1533c058f6f23204f1d91999029be9dded2f1a56ea26ca6841. 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/USA2P2501242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef781f4296a28829bffb022ff7b802457a200238babfcd6c7e8a4c58dc50342. 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/USA2P2501243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98502cb64a8cc9ffa498f313af8cca0e6cc24ec6c4d919fca6b533bb4e02047a. 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/USA2P2501244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9a1fc4caf99481026eb63638536251a7f1570eb94d49ef376ce1b156dc61b. 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/USA2P2501246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89c40ea4f0eba64545d640a8a5a07439ed71bab11fc1080adc802eb53a4bdf7. 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/USA2P2501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0506bc3381737d124f14bbd5e5c203eca3ab3665ed9311a73271a98f7433e3. 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/USA2P2501249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fff448f45f9865113fd55a6558cec676ec3dd996df9b2c803ece2a8cead672. 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/USA2P2501252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec949895a65836ad22b611aaac584b7eeec097fcb512482efc7be72f87348f82. 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/QZVUD2400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953b4208ff8c5ea139d608ff101f4cd70fec15278759bd81cd46b35a6910727c. 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/USA2P2500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3c4c5e32aee001e62b062a9f26bff6390b848826f2da54362772906e02a41a. 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/USA2P2474639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613d093a0113e7fdb000a61f58961c6e8322613d6acbfd262d6ee6aa2704aeb2. 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/QZDQH2439168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d4f8e3c2b7e64394503cf82aaa19503b89c387b35cf51f04eb862cab218582. 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/USA2P2469291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d77c8414ee6a3e657f7b0d492bca5d85465c168566578b734bd12417f02b40b. 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/US3DF2498685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca021da438b300cf76d24ad4a8fefee6ae4415216437446fdd3fe86d4ca0c5d9. 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/QZVUD2400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9dd1272b72d7790d338794ecfb363310dff2ab047063b985b925306a4f5de. 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/US3DF2231791.