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 0x6db3efa073a8d3b580c320af266464978b51b111d7c3de307d41bb6ea1c3477d. 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/a800c2b9-5c36-42ee-88bc-657b50806393.json and https://artists.proofprofile.net/proofs/artist/a800c2b9-5c36-42ee-88bc-657b50806393.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 0xea0417643feb1ed1c98b76efb09c56b0c91f2d87a9ebe99798ef2c10fb28abd0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DKBA30300201.
Det Si'r Vi Ikke Til Børnene (feat. Alberte Winding)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6e5cbcf444069a697f61475c198e3a9f1b253969d0eddeff108dfeefa6753. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DKBA30300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f432739df1ec090a4ee893234c77e05459c86762871bd115d913b8612981d. 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/DKBA30300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37512d52f868b33598a3898bfb8cd277a597d6bd4a5916ed944c0d69e107a15b. 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/DKBA30300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e385bf9c54ec7d4f4922418dbd97d53eedb3ec9d4199d630d882624bc88963. 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/DKBA30300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0ac74833ee5e0ab93eb729cb74426f0ff54978fe94d47efff86447ef6b418a. 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/DKBA30300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500f4cd21cb0f88725e28acec031c4dff4ec0f5759592a5ab0a8dba53522d99. 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/DKENA0100801.
Pigesnak & Neglelak (feat. Elisabeth G. Nielsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59109a5146bbdb9a324476aed0ca26bbb1dee1cc0b31cc6e18251d565c76fdbf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DKENA0100802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882bd8472586d0d4427188360586cc067b8d4ad2d913aad9aef9e09c880ed050. 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/DKENA0100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36c98dd9445a666ba09867c7bf9c635b6ac987dc709bf2329674b6d1b9cc4dd. 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/DKENA0100804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc465d6307ab261f87c6cab71a6c07515391dda370d5f8756b6792c4d68b5f110. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DKENA0100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa097843172ce21303f134d97e23de504d5f09161ab87e38d44e8b1855c45c86f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKENA0100806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aabcb89f14b79f7e84f65998781e5599de2229aa22778d96c88bbe0dbd33ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKENA0100807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67389b6bb3e55ce7897e148bfbb856bf90cd2f12631f96aef9635aa15b767a82. 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/DKENA0100808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc561813f986008f458fd0d89205de62eeff6f1a3445e30e71a9ae01f60d4c225. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKENA0100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0530940aad91f7b9b0c73ddd7d391245e93ad8f753bfd466bbd8c2643063585d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKENA0100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2d4ab1d66a9e92cd4526bf2c4870f12c1f5768ec3d70e33c854ec9ca4f0b92. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKENA0100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1c9388c090bd88aefff1a068182a9aee1542c687684d31205f7f460137e5f5. 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/DKENA0100813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773a8d02b5f7e3b219c3c99d1b194f79435a85b2fdcebb3e55e5f837025e545. 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/DKENA0100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb86268ec22a6bd55903416f2901950e846d7458e411892e879a588b9d78e1a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKENA0100815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57bc08bc7c668b0ec76d0a658bdc2e5b8c89e8fa1b57f4c8a5c007e86619838. 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/DKBA31300304.
Mek Pek Greatest - Åh Abe & Habbasut Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500f4cd21cb0f88725e28acec031c4dff4ec0f5759592a5ab0a8dba53522d99. 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/DKENA0100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0417643feb1ed1c98b76efb09c56b0c91f2d87a9ebe99798ef2c10fb28abd0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DKBA30300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f432739df1ec090a4ee893234c77e05459c86762871bd115d913b8612981d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKBA30300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773a8d02b5f7e3b219c3c99d1b194f79435a85b2fdcebb3e55e5f837025e545. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKENA0100814.