1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5246f952298ea03e8a3f63ada90e83ed7a6a6f9909122583d26d8158126d291b. 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/32f6751e-1797-4eaf-ad14-5b30079d6600.json and https://artists.proofprofile.net/proofs/artist/32f6751e-1797-4eaf-ad14-5b30079d6600.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 → block OTSBitcoinBlock must exist at that height 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 0x688b326b30681767cd1a41f22d48be7c8fdcff6bfd5925722722526722edfd0b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM20523320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea230a2d889fb4be639f8beaeeaed3c9184b9ee4cec87a50e4f01da26eabf6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM20632175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f897864ccf32fbc138c5d86113d82afd1f32d12a524426836e7468b28b4aded. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM20632178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d268e21e46dd988e4b7e5524d7f797c1a83842c34a235ae4424033ffce9d1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USHM20632181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722aeb991e28b399d9ca9da597e096fdcb3e7cfd80a7bce5dfaad917d4382816. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM20632182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270ab4c0f45b7729f9ca715f8b25a0496d0ca0daefd5a329e1c14f79831a9a6. 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/USASN0701840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb734977bfc2ff9030f1771f5e9a1390930c43eec48c9dde04f8b61cee0abcf8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USASN0702712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54805d9bc3c55ac019409280c4226cabbd6182aeabc683ba9f01296c73333d03. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USASN0802179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15affe591418f80005e98bc55d9a97045488f00fc829c9c7c98c1455ca2648c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USASN0802187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c99805775e92447f02010d82a69efddc164d999794fd16e17cc9a25a61e43eb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USASN0802189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e4c76a3aa4b83e414149afd9c978b34186767990b897983ca4f1c652f3fb9a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USASN0802192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1d2ba9544632063d925c13b3eaa8051b325e821d37e5edda4835f13cbea0f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USASN1002238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae7cd4f32e15b071c1da3e0ffbee06fed4532a1e8edbebfd441c5b1a7ab3cc4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ1313269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57987f3cfc83834ae67becab37f906bbe85c36369f0e082a7f4273c7ab867f18. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:43Z), 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/USCGJ1313273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451e277a634f98019c85c0cfe0506a5aabe574dfd9c75e7efb614940b3d0f2ad. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USASN1402351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76601d9a1d1968e6acf796099518b9ffad80cd7c11221445c626460ed6d35d30. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USASN1402354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3969fa6cefe2ab1f7d72c7bd557f373c7035ee780c72b362d55104571c0e913f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:45:36Z), 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/USASN1402358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4dac9b213c5b58708e41d20f304766d05d4b2378be93b03aa2f15ea032ffeb. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:27:10Z), 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/USASN1500852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9e1cf15224f36501a3c4f6f1dadeba7f24b24a00223e44ecfbd37aa9409e10. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGJ1634013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050cd7b30b51ea723668dbb9471add0869038b98c97873609ba6b1d797ddd15. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USASN2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6101f76c8ef2119aeac7d28881f7f55699bc01fec35272aeaebf8f4d7ea35710. 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/USASN2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a33ee0a6c2f05ec80f2486d84b37302f65dcd2cf8f3bcf1fa1d80c3736d316. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USASN2300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e9101625e34dd89ac93c595e262ec85b91019d968a3c678d302a68b5ef9ba7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USASN2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b0112b30d6a86064c7173679a667dbc755ef030fbddbbdbbe6cc544b4c2952. 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/USASN2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff469e0a8066fee85aeecad493ab7bccc4337585f8ebd9025888976c5d8078a0. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USASN2400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9535577bd225c9102d32790acccbfff47fc77f186697efbaee6ce0a28b06252f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USASN2400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b567c2ca32c5dee4c5e3deba8b5f32600c9a96080b74cb9a681bb63dc20c7c6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USASN2400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5d2a330f879ef8c92d043e9aef0e3914e12a24e3a629a2ea9e1aa1791b26dd. 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/USASN2400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56de032d13bec814e17754e99dee94e9020fb54ae68b047b4e6bbb893257c4a. 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/USASN2400278.