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 0x6f40a1b78f7c529af3c693d758cc829fdd1c1bfbb3f3e821a1e6bc79d6c3354d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9cab500-8856-4d4f-acd9-a61d89692329.json and https://artists.proofprofile.net/proofs/artist/c9cab500-8856-4d4f-acd9-a61d89692329.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 0x327ac70b2a0f4896bf1b579e6095ee360a8af5b5de96cec716d450677de623f5. 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/HKC992422303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2233ab979b4162a7194ad6141cb2484183008b0453d0e2c619af12ace6290e. 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/HKC992430154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd01e89b01489ad8f5c4f90114ee3cdf3b3653c07895b6473132b951f81e92b. 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/HKC992422301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f9a8edf83300b38a4b5535ed95f8297b8b6762f77fe0e0e752e53117750b36. 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/HKC992322304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf894e2b9be765ac03456aa87f806c03b40fa37f5ae9b15485b2df17bdc18c624. 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/HKC992322303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64af3f1084de0775f80c457567acb7180af95fa189ced5bed037d05abc6f224. 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/HKC992322302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4be83e26a5652f290f28debc26a33d06db36361620d2285f49fedab4231c80. 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/HKC992322301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1483cb780ece35f09bb54227feb145de93d3f76b8229b5768b145c44faff652. 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/HKC992222301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31c1eeb3db8a3c41182e17ae43d8d59f47e6bfa6146f06867b8c233c59af6bc. 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/HKI242000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad855813b1304f532c6838b6a9d4b4c616e4072997cd977649ea0d7f13b74ddb. 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/HKC992430155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e7f22e1a5b76e3b28e33b3351e92420d9744e95e6539b7a96eae5986df0ae7. 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/HKI242000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a631706abc3eca8adcb808b742d01bef2567a63fac88666876765d3fef3e3. 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/HKI242000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e2a2a4cca4c1e4582f57fe4ba9703c1fd322dbc632b385e651d85eabdf17ed. 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/HKI242000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e52b2edc1730dae15d4e02eba56d7d64c02d4a5120073b445389ce33294b502. 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/HKC992430152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c741915c23df2b95c5852123fe313b76f0013fbd9b9448df9e1b800403da0d. 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/HKI242000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2233ab979b4162a7194ad6141cb2484183008b0453d0e2c619af12ace6290e. 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/HKC992430154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a63302980d56bf275c2b7d0d2abda804411d6f18ac1862eb2dbba5b80b096b. 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/HKH612300034.