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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa235a2eb77bff7abcbf48b8d4e820ea4521f128b11925e4177e9361083a50ee1. 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/335bbc8b-293b-4fc7-8e25-4bd412bb202f.json and https://artists.proofprofile.net/proofs/artist/335bbc8b-293b-4fc7-8e25-4bd412bb202f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf78a973f2b6a0c78f6f3b38013fbaff9278ad9e57a6d79f5d3cc870c2f0c173. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USQY51586867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378541fe9636625bd1fc543e3c5323099d8245ae20e8bfe42a51913cb48049bb. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USQY51586862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe727a5671f4209cbc47b8159ce4c27030fcbf6ead0dac5fa75facf7c9f7007f8. 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/USQY51586865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b8e0b158dab9e4f190c139d45d0aadb7e254ff3f44fcc6cdf90cb9c5e6aa2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USA2P1569804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6834d273fecfd844588e9590a4a3cd0338be93d189bb55ef854ec9d80ca609d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USA2P1627435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222221f86c062e20d91b7094a17beb7a8f4697829257d9bc31d517e3ec81d39e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USA2P1627438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89555ce956601d2b41d7280d175f2fa859b249c72b3d99101340ed9a59610310. 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/USA2P1626054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad6761879b9170156080fe016815c9faa5cc063e80487446c4cc30f5132287. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2P1627437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222221f86c062e20d91b7094a17beb7a8f4697829257d9bc31d517e3ec81d39e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USA2P1627438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858fa51798797c6e2b6203d1d269df26bce1570e2d771d738d11a4157d098fc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USQY51615472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc4305c37fb0ae688f7ae83c810d9207d4debb9cf4370c19feebd1ab5e3b52a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USQY51733904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54a2771070add2791654abd1f8827d823b9f761ba9f53bd0443428fb536cc6. 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/USQY51733906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca0095aab22dc27766bf45bf85e94bbb9f5d6e28f27536665684ddeae951a1b. 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/USQY51733908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6971e3f15b015921f00a1db38feed997a0a2528b3236ec99304c8ff1da168c3d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USQY51733909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3101e0b1eb63354f04a77b32f4350687f45846fccb5cef1ef614074182035831. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USQY51733901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858fa51798797c6e2b6203d1d269df26bce1570e2d771d738d11a4157d098fc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USQY51615472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc4305c37fb0ae688f7ae83c810d9207d4debb9cf4370c19feebd1ab5e3b52a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USQY51733904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54a2771070add2791654abd1f8827d823b9f761ba9f53bd0443428fb536cc6. 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/USQY51733906.
A Tale of the Twin Flame / An Original Internet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53856bd9a739b58b75d6e4b8c12ef38bb11ebb247886456bc3848e431a622c69. 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/QMEZE1946235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b67f178bea90fdaa5ca9c21157979ab3c18be1ed90748307d5350061ffdf04. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USD8D1857003.