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 0x7fb104b8a717b5cbdf9c2965991970a698fee1c2c79c2acbe779688c8dbfb776. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81b5722e-3f1a-432e-89a1-a6f4876a3932.json and https://artists.proofprofile.net/proofs/artist/81b5722e-3f1a-432e-89a1-a6f4876a3932.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 0x3f07b5ccc9cc223474d1dc6b439e4ee9ff185098af2bb6bec18494931dc0c7db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM2PV1890811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8c57c712a780a374c673464457df59aca92a9c61fe119917b87388cfc6aebe. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM2PV1890813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6b65621290809245dc3f484a7d65909af2ce1ca097d266e3159226937df9a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM2PV1890814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c47eb1f2e2d6aff48e7f6f2370fc77ac7d71243d5b951970b3cde67d75b9997. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM2PV1890815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a06a46eb43e0acaa8c4c330da21914a1c34bcbac906d7005d9d29fdd77e225e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/GBKQU2115585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd756b8f2589d1cfae642550935625b8305bfc5c25a0d1293d2ec4fabcdbba4b0. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBKQU2115584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdb266eb1514dd07f498a7a26218111fc20270ab6c6191fdd205c6004fdfb8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBKQU2115589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac85cec27432331b2e793475d5902a71bcfd7e093ece382ab00307d36c9a0bd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKQU2115591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5b039ff96376a3c440c58e276f10f057260928ee4628acf40b8d5108092a8. 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/GBKQU2227416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd36840cf7675691c681f297040cbce5c3297a06022639d431c5b41f275b4f5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBKQU2224518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e164effab381ca205e8bc80af7c91b91207f344cb128a5b815bb9928b0241aa. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:30:21Z), 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/QM6N22263410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf51a24de6b20d8114ce2d50dc92351b6f19f9bf845fa5b071814e7e9b8db86a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM6P42200335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e1f5c02f4be87d25c498649a5f1fecc898050cd59222f9749f2fb399553d0f. 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/QZFZ61923256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d1d9de6aab552f9d563972af0139e07e91a323ad571a2a436b3275cb6604b. 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/QZHN71903422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69708d0441db6a49ea69a09b6dcbf522ca109b493e009709c8c0b450f37530ff. 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/QZHN71903426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49419452f4272529a9b2202b55800014570db534261ccd0875b5ca9b84a0478. 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/GBEWA2404041.
Hiraeth (feat. Kim Van Loo) - Rohne Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7244cbb2a4c0f227ca0b61f9bacb5c720a50d21acd299cccccaa2774973a73d8. 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/QMBZ92324761.