1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6f771e349324d88849696080545c7de22a1d88df12f7095abb53d277a3973eb2. 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/0880493a-6bbd-471e-a377-55d7c11cfe07.json and https://artists.proofprofile.net/proofs/artist/0880493a-6bbd-471e-a377-55d7c11cfe07.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 → block OTSBitcoinBlock must exist at that height 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 0x600072ce4a72eda06cdc1ecd57fe705fd84e9105d0a9e32bec6b0f1b6cc7cd84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFT2541747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0ec022619a9fe2710782df82ae4d3752c26a911e53f6c574d5479ee82025d2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWS2545370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ae9cb93c42fb617ae15d55857297860f75da6f42d359ddd50ced4c9fb07bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2551557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3b452f58dbcf45b8e5dc575752e72098fb271600e1580f03a3bd73339d144. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN62561609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8b55b50bf448e53096515c11206f78ecdd77e777a742e673d9e9f42f3eea1d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN52522790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78b7897b250e69443215c20b661a913330c6a4cb1a039221e879edf283b097e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES92561960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771e33bd72e8920ad459396424c93fe8dabfe02b762de2bbd82e75aaa12a4d18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QT3F32469470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3edecf55565cdb85f4d8938536bcd4b4f2ae67a907105229105f803dc3f40e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ7V2467125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783790b27a31a0aa6b83b7a241aa0076b18683c84cf04930ee6e43792de2fe2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ7V2441840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e58892ec38f6d17ef666d0352d90409cd61d77e9f80dbfc138d85d71aa9ea3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFJ2466047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc300f4cf9c5e7f68412903adbb20e1a01ee60a7ef059411900c30082873b9e93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFE2482094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6028b4bf7119f48ad9608ef8b5de26124d5859b32fab8f84fae18596551851c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTBE2409424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a89274c7391f196f81c5cf9e71e90eee45d80b872c4e2b8625a98f8ae3b4037. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB72457367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2b359f31b200d2e7b4bd0036cdc46d53053506471cedca07183daac26458e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB22447173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6de9209f5c99a6a139cc2095fa2206828d7ba858f53d37621115297cc4768. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB22447909.