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 0xd14ac75ef80b52160ccc2dcad136c89ba697f5c2bf427a2f077f3d844d1887c1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0546ab4-837b-4c0b-95bf-419e81da6387.json and https://artists.proofprofile.net/proofs/artist/e0546ab4-837b-4c0b-95bf-419e81da6387.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 0x5dada64a74b67a16704314fe634ee2c7aada3741b13dde42b666f215d8a2f55f. 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/IDA141704075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d96eaae7157d289f6337a9ff31effc7d39db06bf0312cfa2029d2e26a19f5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IDA141704076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f1fe6508b6a5b7215f838103340b27199d1f4c38e4f14c04a8fc58e51f4af. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/IDA141704077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4520c427a8f6adb9b1b307dce5ff6143ec453c5225c5f70a3215d3c1ccf684. 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/IDA141704082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfce2249749fa073bd749d90e9424fcefbc71ee295c2a521a32185be2d070bea. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDA141704083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8188e249cc5ea8a86cc29303d28154dea7dc204d765b553db05ec81a84b32139. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/IDA141702948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61fb1403d014726571287b435be00abbb1c58224f7501b4ff6db28a5b159909. 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/IDA141702953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b5ae1f4c6fd7ccd8b198e5232d0510d3de530730425993687667bbd16692ba. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:11:23Z), 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/IDA141704115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3696d31d8b306a6a79b83973ee1579e0c7edac27f328d04b98818619538dc2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDA141704136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b4521200893bb98422c7584f7314cd23072a99e1e58dc2c77bf74365c39c76. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:32Z), 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/IDA141704137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c22523ab09723139b839b70848871b889d1b3c03918f19ef6ec3357c68b720. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/IDA141704118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2797caa73a0174162f88baa94b6f41c6c82805f7187b7679b386a613c15ea743. 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/IDA141704119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bbdd04a0f11d41bd282e55bc5f81433cfaaf0e104d95514459f9659e9484a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IDA142000340.