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 0xb94b6351f5092bacc8dae6a13001026d42a98e346a2aaa38268bc7b33b24c7fe. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df5ea503-fb94-4673-8584-81a4a9611899.json and https://artists.proofprofile.net/proofs/artist/df5ea503-fb94-4673-8584-81a4a9611899.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 0x32b1c6eddd893510aa58698f984b8a83cc954fc7eddfc5eb33dc9bc53718f232. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBMA22334563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611cbe4ddb80dcc671714ba2015d25cdfd5f7877b73d900b6bc5723b406095b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBMA22334564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9a844714f786a6243b4bb8bc684ebcae7566d61746d3306e5895062ba57c0a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBMA22334565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02c807db05392b58161bd74e6f577b533ebd8f188367a5f5f2727c5a36bd460. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:04:10Z), 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/GBMA22334566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467c4822d20b7c46ff24b270248a9d8c1fb1ec5838068f4c538b701355de5c14. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:04:00Z), 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/GBMA22334567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa37546e835b5496bb064d08d8192b38f45fd1e2674b2cf19f5811efea8338b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBMA22334568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88694448bf978cd46e709c8d6e2360c83a71e5e02de62868a556ccf089053b54. 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/GBMA22334569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc949b0b2017b95f7c73dd5530be57d3dc05fd86ed7185854862a0f2742ba6d99. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBMA22334570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0348380cb047e634bb1a36930226860c3c46932c5565c4ca87ada4547e7ba3b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:45Z), 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/GBMA22334571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c170d4e6779354e734a9f2fc87691c8bc6817928bcb223a2c23819a1ea19537. 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/GBMA22334572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c10fc17dd4aeb32f14eb41e47e97880ab4f1a2dda0a7cb0bc5d2e00202060. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GBMA22334592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069ac0eb04e58beafd7003d9ae9cff092b46b0ea6c3c47a68e12b38db60eba6. 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/GBMA22334593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22958f0344de98c14eda3657f3564fa9eb3c927819e52338b17e5a3d7d5e4a2c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GBMA22334594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d2b3098d582654f6c66885c638dc2d43146e54cda6e0919da1c21fbf1fabed. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBMA22334595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17a583b110bdac15e6838de0432ea6817a63cc203b01714067fe80ae45d133c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:11Z), 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/GBMA22334596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d58499f560c520a1e30ae328dbe4d195e8bfedda4b1ef47889cac57d6d655eb. 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/GBMA22334597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f476c19f179ac74858fa70c456141edab4a2b222ef2cdd6882e8ebbb6b2a1a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:51Z), 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/GBMA22334598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595e5d9a877b90d43dcf1a2cc3d1f46c43817d748a5dc24dba6ab79d4415ea50. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GBMA22334599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f8afcef00dccc01c364b7f9608ca38fda3198ffcae0492490637a2ff647b36. 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/GBMA22334600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd94940a0f1bbc9ea683cb1b6007b0c073512c4df6ca99002a6420e4e261262b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:10Z), 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/GBMA22334601.