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 0x83daf02b00907ee2236683f8750454a454a37c4eaa6a7e268c5574b7d9dd522f. 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/af449b09-7164-4e71-80fc-0e88f4095339.json and https://artists.proofprofile.net/proofs/artist/af449b09-7164-4e71-80fc-0e88f4095339.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 0xe5d3dd034e2f85d46d3ed56b8211f6b514f5c833988c125dd462537674633fae. 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/JPT591710061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385b7a4b9c374f71505beb513ddd5c50275aaacbcf75e866aca74f53624fd31. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPT591810053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8271eb2086dc52eb72f320a089f1cb0501bc3bdf5b4d178de4480e103d37f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPT591710195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116e05c41d8b0780966e4f809b136da2a6dd4c6fd7e157f1066bd594d5e0b1b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO02134680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7c47328cff12d54b93d1fab09b07632ce4bc1faa69100fcd23a64761b91d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPCO02134700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8337e20f5e1a196b9fac506cf907e4b13cc525c8d87f1fdc04c1ea98b38d62c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/JPCO02134710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53320948a0608648d07ab4c575d3a76aadaa48f251bb9fec76df036e45918750. 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/JPCO02136240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f7e6424cef28629d374c49009eb5613255f36ba16160613076e206fb39267. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO02134740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1522581204ca117b11872fbad0311f83facceb1083a18364f20e0bbedff78a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPCO02031390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63f2077fc969cb3080190ac8396fdbd9213c653ad6e9a41423d6b442a4d5217. 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/JPCO02218200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53320948a0608648d07ab4c575d3a76aadaa48f251bb9fec76df036e45918750. 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/JPCO02136240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5fa8fa2aa8353d601f5ae595ddbef203e059fdc64b19f93c524d00277ef332. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPCO02112840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03213b960c3a411105fa543e4c434400d0b710d7b3a6ffd54f2a1ca870993400. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPCO02112848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1522581204ca117b11872fbad0311f83facceb1083a18364f20e0bbedff78a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPCO02031390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221522f42adf5dec06ed6368cf8949c22e523093b8e486b4d6931674ea723a4d. 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/JPCO02031400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912c6ad8a3e623d3d3acb44aa923b592a9de84a374b9436eae8fa8d8b164f65. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPCO02031398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e8e4e5ae52700fb418035efb1b64152cbe6450277d17b351b1c01dbd58f4aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO02031408.