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 0x285bac16c7ef234ae28985b2112d8a2463040bf7573d1b2e4cd6505be7c5210d. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1c8f497-c650-4300-8d86-d6411a5c1934.json and https://artists.proofprofile.net/proofs/artist/d1c8f497-c650-4300-8d86-d6411a5c1934.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 0xd887f18b4163d7f1dbccdf7e53e6257e3e976fa6b5462609fbcf7e43c37181eb. 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/QZTAS2506677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cc166b9aff1c4c61777421b1e3c11cf6231669ca6c51b979f0314aed1b8b30. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:57:59Z), 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/QZFZ72586765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8313a3634543f55907899b687d5f608c77524adabb3e335c04002809be0f6ab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN52555522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5f41335bd0ba033c754a853f7cdd7eafdc27d57250f5b244dc5c4084248a30. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN62502984.
Without the Bottle (Plurrr’s Slap Yo' Momma Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7071d668e2eabae81f3890df0572255078c0bead657990903ed2a68087fd881. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:59Z), 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/QZHN82510464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fd80e6be319c437595c78109f0b07825d5c062a5073b454c332ad3eb6a051c. 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/QZK6P2506822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce84aa363e4f92bdb17296c8aac441486588352630e198e6d697d029fa210a2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6G2555882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ad7f70408dbccb1466acb727ab3b46b1ee142e61b238ba2a97885ff6705aa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:15Z), 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/QZMEM2572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb872471c939ecafe54d99586ad8eafaeed0192923768537d4ffb01374694783f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMER2514911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1308b42ddd2d0a1e2da507bc85f25dca97d712cc2a6c62d930dc06d142e5b705. 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/QZTBB2561840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9bc1da973d2275b2102dee6a7f6638df7eda442f99b3ad5b8341457c72c5f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F92569403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0546d8c294e6c68d3162eca05bd9d17002ceaf329ff9b2bf81eeacc0d52e900. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6EC2588488.