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 0x8e274e73f7f2c5f5c7e89b5b83989f27648f73773db65735d624f60e88d861ad. 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/f75dadbf-08d8-4883-973a-6efdd27177f3.json and https://artists.proofprofile.net/proofs/artist/f75dadbf-08d8-4883-973a-6efdd27177f3.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 0x8ecd8a4d3359e434e1bef6fd6f382c82895121bd58b18a253fe26c6994c869e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282329109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5291551006dfbddc64cc68f7c3f9300de2e4983b1c2fda63d14ca6b314e176d. 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/AUMEV2382579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5291551006dfbddc64cc68f7c3f9300de2e4983b1c2fda63d14ca6b314e176d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2382579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf269d2aa8f68128ab6ee5397a2832ec4adfd8783575e21e32b43a5b8c2df3534. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNB2006223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe768b4c3d458b5abed2e377de4e01fc24e097972992d763e63a3a341f6a36452. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX872288175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a6c443826b77d0de2caa4d69b773140ba230e2caaa0782770a024014887dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S2474612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6e7d0865e7e5b282773de1075f3e342c1d5df65de8a666746dd2cec9e75796. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX452359900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91ecc6b287291be259b8bf8daa3f92b6ddc9f2ecdf194df26e59b578e9bbb9f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282167483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ab1a3592756db02cf26c7fcfde14c4b10baafae3c4face9f59db21d63baa0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282167484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c4e1d5c68fd2a78eab2e1aedecc2727de938da58efaea3bda2dffaaead4b77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282167485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d14d8b51243156c04feb6f8eedcf85ae5c4baf79668d455b4f03adfae5770. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFA2068778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252515817e51c7fa54674333ce3bec24dc2596e5975d15192f2fd4cc21113013. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QT32V2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659312132b068285d6146e9380e433a29baf369a2fb3603de8d45de32687557. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QT32V2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98eb6914d1726d4c97dc2099e1a4508b6e623fa38c7a88df1ef7d499a0dfa34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX282202938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b1c5d3234b24371e4b5d165b320069e7e2dfe194545734099aa48daa8f90d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QT32V2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6e7d0865e7e5b282773de1075f3e342c1d5df65de8a666746dd2cec9e75796. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452359900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98590248e06f5107e8e504dfe18869ab034d6c2c851eefbcac07b043ec56b4c0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QT32V2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1835880b4ea99c0e05a1c67d1679abee9004904771b63c6082f9922cd3bb55. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QT32V2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03af76f1449258b643722c57f6c11615894cbc5472abd9a3b5824f27c431fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QT32V2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a33ab7be2358caf2d786f8f8b5822d10fcaa55bb73725f3791403847cf688. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QT32V2400044.