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 0x071c7053926ff558b061e8d3e3c2801a8693604894e434403d91415bfb449383. 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/0bcf4568-1441-4aa8-99c9-ef444748ccf1.json and https://artists.proofprofile.net/proofs/artist/0bcf4568-1441-4aa8-99c9-ef444748ccf1.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 0x2fd3c9e097080efa5ca3f373053c94ff44e9cd7e55a00165d760d6c73c92aaf6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/RUA1D1914076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549b61382acd4b717093a9912c32e5f09ed51e0c4dc807b64f8b9f0d1e04254e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/RUA1D1919359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0883886fb1edc52e985e633cc9b750108a0bb3bca91d7b5a77b55816bd25cb9. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRX281932228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bde2381e382cb8a7de9e52571521290e7647051ff7461a56d7d78712c50631. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FRX281932230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1140ac77d40e88899f46ad46199a77c7d83fb6f0080e0dd83f77fc232a495c42. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:59Z), 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/FRX452090946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b588aaf6e3d18f1c8fa70cd8af7c06a52a43a2b21ce03ba75149c106fef9ee1. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:56Z), 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/FR96X2051203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299002db98ed81eb3e08d1daf6b8a225f2bb06f503bc0f37a895abec7d68aaa1. 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/RUACR2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21d0941034b47acf179a04f2812bf90284a73d52ff67b094faadc0fdd8497eb. 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/RUACR2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a85006bd5d7cd732e185fb060532046eb183fa2503f780ad3eee099762c2fc3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/RUACR2000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8b6312c62f61f3356e42898fc5e9ac0bca273b89e5f9a82db790606308a220. 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/RUACR2000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847faff09ccb69c04c891ec652f589b101aa8ceb131c4a8c2d31bf63dd2d9422. 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/RUACR2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156759b00243bf90aa46d1823ca5cf39e8fa025a3d9571fc4123dc6d4694e95. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/RUACR2100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a42b1ebdce33f6cf0efa5dac4983709249b3098ee374525239aee4ad527ea8. 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/RUACR2100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331cbd204bc7afbc17742b480dc5ab57a039a98fd3f5b58301f2bc70533a0164. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/RUACR2100288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3789f7becc7629fffa67d400a1800b64b62ae8500bb04d9f8744c36e3c57bf. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/RUACR2200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fd87d496fdbdea6414fde885a188e1b5d634d059fa9890446db385c5947391. 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/RUACR2200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21973b8c67d9935a0dec294ff0fdbe947a48e8f4fa44ccaceb7f7af341e3b67c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUACR2300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c15e8255b8ef32f9fc024e461ad384a017fa284dfc87baafbb33177748e37e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUACR2300517.