In medicine, a surgeon is a medical doctor who performs surgery. Even though there are different traditions in different times and places, a modern surgeon is a licensed physician and received the s
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 0x350eae02d3664122eea05e805772c746ffdd38a10529b49c35e70bad897042a1. 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/455cf50d-7996-4ddc-b9d8-92693bb6bcf2.json and https://artists.proofprofile.net/proofs/artist/455cf50d-7996-4ddc-b9d8-92693bb6bcf2.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 0xf6a744aa13943d41942d3fd1531dc023f91a7e0b00628625b8805e1dd2ccd3cd. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DEF279707302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc190e6e907ac08de49b34810ba65093e1016c400297b5f60a84396a2935df89. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEF279707309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d7a066bbc3676de648487f38a28339b141b700f5a29a5e1d1a82277c40fab. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRIDO2210107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba7dde32b0ab4fcae160a1365c22703b575db9bb30af8c7c8a5cded3958f2ab. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GB6SP0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd7276b56ee9bea78330b37b42f03d1a69b8e6cf775528857c5142cc22a6aeb. 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/DEF279911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ffb106215c7d2acba91e5efc1364da0767083e3e97f30fd2e2675cced8d73c. 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/DEF279911703.
Hello Oslo (Recorded Live in Oslo, Norway 4 July 2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c4280b5fd9cb4c1da1b13624c273b0319242204bfad133b3c2e9aa58a1e266. 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/GB6SP0900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006474ced8ba5179414f858e709b553c4f7dd4a7a0567ac019f402c237c04047. 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/GB6SP0900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479a555d0c03c1e4bd4fdcffb92e78e21bf4232da06b421c847da3e57d164eb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GB2AF1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f53ad6dce9798cd4d5c87c7f46df9eef999b6f2ee02b807a323899920b68e79. 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/GB6SP1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859a85747854e19afc76a751fbb05a41e4b40e56a5e22c1bf810bb2aaa31966. 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/GB6SP1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0e2449cba49302c3aac44332e60802d583dd399ad44a6af463de5cd00296c1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEF272335101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d900524afa4493e425aa556da28511ea79eb959d730844f6383bb8c40eb365. 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/DEF272335102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2181d3b248f5ebec9af896079ca72ab9739aeee8db3295be7dc38e3eb1089b55. 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/DEF272335103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa4db6874d9dc1f8d68ac21c0748e6b3b9a6b5b71c6424e5f07190d6cf9a6e. 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/DEF272335104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3949fed852b6ed2b59ee083b1358a49e8d299d85cf6e47e59ed3beb34b4a8d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEF272335105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ae92c68f6d912b55d92213586f863715dab03ff13cf5e30c338902b941ce35. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEF272335106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7055ce804c43a59982017a1c801c911e3bd63c301e92acd1e5f30ffe6f850. 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/DEF272335107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53660a83bac1ab5ba9a35e70fb68d0e496bd29e6eb9f2beb666e79adcf0695. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEH742321563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8239912a0a3da072298d186d79da5cfd10808830b49224a0c1c709fabfbe651e. 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/DEH742321564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f94266ec5f8fd6ce31aedec47f6b6785645939db01a138ea950dc3ba85b68. 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/GBBKS0600392.
Balance 020 (Mixed By Deetron) [Un-Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4d0e5fb8b834bdf40c4b485f7ddd5d39cac49e10ac640206e708dee7c789b2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GB6SP0900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45157a933c6e83ce4a3f38ca1025fb1f5d12f65031eeb776cbd9a91259b6ce. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEF272133019.
Tresor Records 20th Anniversary Mix (Mixed By Mike Huckaby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd7276b56ee9bea78330b37b42f03d1a69b8e6cf775528857c5142cc22a6aeb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEF279911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6603599fd7181568506e06c7efb36db5b55fd2484f69a00c46783c681925384. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBPW9900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d68858e4dce3c93ec518a8533cecd39ce55b9c0a5faa5280a8df5ec290ff09f. 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/GBEXH2100064.