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 0x2f5f3b44c6a0cf62de1d31219e808cf52933c19f5063be260861cc9ab8163732. 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/cbf8039b-6bc8-45ad-abc9-64a487084758.json and https://artists.proofprofile.net/proofs/artist/cbf8039b-6bc8-45ad-abc9-64a487084758.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 0x42b5cdf80f4e2bd33e1a73e2e670af45ed5dc8c467f7e6af0eee2a277d1f4552. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1843994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f9851ec79fa39e192c8dc0bb33b85d2681f44cb63eabacb22e544e1680420. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S1910670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0449758a1d6999fc5e8d24e7b8c44e0955d3f1e3f8ad5489a2f53a6f85410. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:03Z), 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/FRX201991961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fee796d6e52f516881f3a06e03a9a85c954953a85f028b9d9acdf80535bd37. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/RUB732012814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d1c1fd6a8cd93cfa22a22b35ceb4d7a6e960eb6dab12d4201985048c6aaca. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:41:26Z), 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/FRX282112400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704605d0d1772ef9b7f35b5b5b4cfecab88131016fc6c6962d5d2cd3f415dea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA082294626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aedae579a0225199a595970d61bea5648c96da2a3f3dc71f656623ac76d0160. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DGA052350209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d371027b0197cc95d7782671a7a9d152a304e0a4ab891d0398407432c3b0ac. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:38Z), 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/RUA1D2387815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231fce0f2fe9c0f23ee5bd3e380bbc8c1a133cd577cb466e176566a5393b63c7. 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/RUA1D2460862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fa447cf831481ece1c26e5ba791af88f85d3c71f3d0318f02481174e1f380a. 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/RUA1D2490301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4f0b8052c7e99989a5f29ab6c070ca60794bd9c40c337130f1bc63a2a17db7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:19Z), 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/RUAGT2413631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd10312da21d998c46d4595b90332eb1e587b229ced3467b1b7a3f9d86c9eb. 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/RUAGT2424701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a1a9d7737f499304c05baf99d4b09629ef01bd578644aaf43dc6bca84d305b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:26Z), 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/RUAGT2435770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb67fab840e0b4c9cc1e8755f5e4fbc1325deb7dc26b1796947f31db0fb0c05f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUB732061063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2b94098292182cb12d8bc23bcd30d171ffc6775b61d034b0f12e0c58c1275. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FRX452599480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc158f46a91bb4857440204233074b64768e8419e67bc60f916a8e568e2d5c5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUAGT2532477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a67655f938a96b046704df730c21c7936cd164cc378c1e842880d58622039b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUAGT2545743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8bedef221a5099fe50f11523c3e87d899a483666f8319a3d5054102f101e12. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2576213.