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 0x85149401d99399aea73d504b136c6b4c60f370a33fa3b5debc63556b5415b8aa. 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/09789e33-ff53-4032-995d-7e5317bb9683.json and https://artists.proofprofile.net/proofs/artist/09789e33-ff53-4032-995d-7e5317bb9683.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 0x286bce46e691b2c1d5d3f3632b58a514e76691d34e5eaa68166c1f5531b9bec2. 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/GX53U2042702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7b03e57a4ce1f9e918f396df02738911e2185ad5bf00f36b9e2543ad6df496. 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/GX53U2042703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b4be3d200af9f58cb163ca4c425425e7985d08a18936e0257903132efbd871. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX53U2042704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab562f139f940e2cd0cba022c46143c720fc1589c9ac751152f9062e9f9c6034. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:30:45Z), 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/GX53U2042705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad0b115740686de31dce407cc4f2ca604306b331d06f3eb668a0d3d60cec25. 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/GX53U2042706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a4b0f785769b3170b90a3c34af89014bb0a540e0c35677c737f4f32647bb0d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX53U2042707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cede84956c99eb20965c6ebb0da94ff4380e53e649972842f825d0bc681d24. 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/GX53U2042708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c9729ea13c2355c9063b6b24eb47d25380aa268ddcead9d2d4799ab241a8a8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:51:07Z), 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/GBLFP2365379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa782b4eaa9858a72ec5a9b115a579ba907ad8e4295bc65b665004be863ffc1. 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/GBLFP2309253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc9effb91021449a22791765f4cddfec85158fef35b0a35569883db06a9a335. 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/GX3Q92348747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88ac92508f80465c4f3fe01df6bebb4abc2ccab3f9015e293ef64ed9a534c2d. 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/GX3Q92163222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad366db73a1f81bee970570dc5f00dafa4690dd91f12683a054b657307fc897. 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/GX3Q92101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b787194433618b743c3da25399b518a9997828fd903c93aa7ab34d3bc317a. 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/UKXN22187252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9875dfcead31cb55e6d89b3a94100e9c4eb733d49313af5040db899792a5de9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA22142823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3231028c596438f00d115223e942cc603423bf8a89f633804b01b20c71c7f80e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLFP2176379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4bd66fa6251452969ece3616a49b2dc901454e9c56204e4e94dd60ac726c4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKXN21953544.