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 0x2c7dec0fd03eeed14a5d6c2ed31a344a24580def1d438f41eb7727a13048cd4d. 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/b34c0c70-8fc4-49fd-8ec6-bc792eeaa3b9.json and https://artists.proofprofile.net/proofs/artist/b34c0c70-8fc4-49fd-8ec6-bc792eeaa3b9.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 0x69fe034e830a9f2d23f96a10df9e88e92b8e2671593027950007c2e0134c78d3. 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/ITZ331900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4ec8831120b952a62e72dadab591390b77667a4d02cd7b058dd517223ac43b. 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/ITZ331900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea28c91e35e89c3b28c3bc58efbc56cbceda262faef110982d31ace484934b5. 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/ITZ331900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc41e5fca75e1d0948ccd3e2a8c2c67154a143069cc2806d86227fb72a407df. 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/FR2X41962764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ef567f97d7ed1f52f7b4174eb42d6c12767425f0015324ffe812308fe467dd. 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/FR2X41962765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab816c0f1d672ee70423be83df436587219f13d995891b92b1db5517c98a6191. 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/FR2X41962766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4020ebef08258d46f090346b72ced06189fc92634ace8da318ce7cb78ff43e. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:57Z), 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/FR2X41962768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d806098a76545b34ad5831ded8cccd3b00447022128d5e7d6708d687985e82. 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/FR2X41962770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef61bea491f94765ceb2a1434de3a5eaed22562d86877f53c003d5ac34b110c3. 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/FR2X41962771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808a3e95834707e7580dae40f43c43a96f10594eebff6d053232b0ed2cd35907. 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/FR2X41962772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b7653ba478d78586e1ffaa65f5f45a79c6c33baad8d9b863930b93f6daddb. 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/FR2X41962773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e015fc424d4fd040035702fa2957f688beada6211f540e27849abc887938c19. 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/ITA642400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b78070cb0192fcf7b71dddaa7c4194bfc9f2af9b0e0277bd80fd704ca357bb3. 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/ITZ332100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3362efe74c5a863b326c6892dea7bf543730c28d230a468fae06dd0c12c63623. 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/ITZ332100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63669bcb1ce1395a201fde7e5b77740fee81a889eaba3c763ada3a7c92ddf84a. 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/ITZ332100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6392221ed67752cb5d2b5d3213ad25210260d36d5469c92cf85cc0c3bf71d8. 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/ITZ332100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb686e8f5086efde78591e9a002b62ef843ffd03f53e3d942198ebc62dbd1fb0. 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/ITZ331900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d3b35018014959f2a3eb83857fa363cd57e07706cd8b0a16bc48d6b50e0ce. 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/ITZ331900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd794e8e093fdabb7a22f1ce355a9029fbeba49cd959915d30ba2699bf8736dd3. 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/FR10S2070680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8085715c6991b489d7fc9d6afde93ebd56adbca24a7c21f1dbaf63229f325bfa. 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/FR10S2070681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b5c2aa6745a66ca169e8ff8c0a543848eb5f058de420d4eb1c70a603b61ce. 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/FR10S2070682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b62998d5c9fc1d1cd274d00d88290afaa1f8a4ea02b281ad48096edac09df7. 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/FRX202047010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c25269bddc4363b80ebad1641b350a5a703d354310b7eaf5f43b0ec4e3a8c4. 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/USUR42341801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daebf62c4455785f05dde4daa081e05f9320380382712ce20f93faddea3ff56. 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/USUR42341804.
Et Annet Sted / Eddie & Suzanne (Remixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e8e8366ff3bc247fa4ef2e554086a296ff783108d8ef959f154b1f597be52. 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/ITAF21000025.