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 0x72e519e944d45d5c26c806ce1707ccf76a1c112735e16985e8ad294860ce6a9f. 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/6e2418ac-8ee7-47cb-a74b-2e74b4603b7d.json and https://artists.proofprofile.net/proofs/artist/6e2418ac-8ee7-47cb-a74b-2e74b4603b7d.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 0xc29553d764b287d5f0884a1ca2d9b0d3a5a7afc1837b4ec2bc999e266b6ac5aa. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPTO09924630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ada3d740ac6fa3861bab2435d4d94d0805f060f52bedd898b40e80ba291a01. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPTO00000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6497abeb9ee39316fe032f65076880f2d97bbd52333b41668e12199352d1b5d1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPTO09915030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602084a00a6b8d83808a1a8b8bd5c5b9119ba5ba5865bbbbacfb0d831a0eb61. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:35Z), 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/JPTO00000545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87785ace52a14f26e6ac3bd33e3720b01e484ba684385288e1e7d6009d23bebc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPTO00000546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c698670f559648090f3fd5b446f7b41f24b98b373d17b99f2e0a01732578aa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:34:24Z), 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/JPTO00000547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10482747088dd9b5fd2c4e923e6c66b98cd9c25b9f89bde97ea16bc5f96a5e96. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPTO00000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5a36bb5d743451923a3a7227a6ac72fac465c0cab84269b29b23037a21be55. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTO00000549.