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 0xf191205bd8bbb82b06b8c1768898443011874c082c3cad71c27a4cdce020446b. 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/53ae898d-ead2-4016-86b4-c3ffc5886ed6.json and https://artists.proofprofile.net/proofs/artist/53ae898d-ead2-4016-86b4-c3ffc5886ed6.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 0xe2cca79513f37914a9dccbf6169471b9a07587d9ab35300bfaaa20b524aa4d91. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:40Z), 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/FRX762020374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1a9db18e81b5b6561ffc0f73935fcea91c20bbba3dbf822923668a06b96fb7. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/FR26V2042334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d52420418b2cfbe3c53c3043a2e931b33c7112a7aad9e0db5cbc1075d222eb. 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/FR2X42174637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53b2060c7cb40a972211a58f41071aa134b5283eb7b5d6efdecc88d04cc6f4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR96X2197392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddea0100dfec0f692f9e63dde0c0fbbfc3e47356d5bcbbeedb5b6897c82ed6c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX872266636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd318c786de90d7ba52014254378f913d3011d677d50f1a53c059b17b26fd705. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:36Z), 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/DGA062295198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdddcf96b40048e77a8d2029edee256a3358aab37305c9649bbb614f76696ce. 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/FR10S2303524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7fe21ca85e833f86065885e5f2cf0da864a2f083c1a198cbb0d95260eea779. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42372442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9490b4f034ec6403ac61ffe67fd3f859f114a90d2f8f5ac8883210d5567bb3. 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/DGA0R2327419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9490b4f034ec6403ac61ffe67fd3f859f114a90d2f8f5ac8883210d5567bb3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0R2327419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37687e1a79f0f6915ea8e1e8a2a0d30c2ba036b36bb660c407dcfc0d7699eee. 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/FR59R2416235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacffb18dcda8604269e52e95061a91dad8e4e9040e9f2e420cd7d92ec1a9f191. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR59R2582827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e853d8ca80657f61f0e167f4e25d30b61dd02115d8ccae7cb291bb7797fe928. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX282538273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966029be8efabc19f469a80e79d4cab655ed7551dbd6bda780069c30b7d51556. 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/FRX762590400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cc0554960563c64c3e847e0542a8f11a703f664840b8db3d6a8ef6eb289b6e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMFMF2511255.