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 0xb0b8fd0b72c3f35490cea5b4314969617688d4ac41c43e6cabebaf805385a1df. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ba0267a-c039-4cff-bcdf-5f6159146f94.json and https://artists.proofprofile.net/proofs/artist/5ba0267a-c039-4cff-bcdf-5f6159146f94.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 0xdf3ecfe5ba6eb66f16930c6c9c55ebea2b1573df2c2f9378ec9a36a70926db7d. 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/QZBRF1874752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dbb21886eab1702eba3c1473fd7715304a7f5f7432f2edc8877268339f5912. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZBRF1874753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941d62041c6eeb5f84d381adac0ba6baa4309ba6b376304f76fb6ac48c77369. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA72096023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1771d7048d26d3558ab4ee3f6e3ceb88c4398e9bcbf2adbb7f4d9f98f0bdfaf9. 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/QZDA72096024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf12c840349f2653d80d36d0eeb6f0395bc7506c215ae6b6d8a5875a363602. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDA72096025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc47f1ad7cafefa2f1aa27ae610e841ba5763d43ba35cb3991e9ac8ac68bc7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHNB1917916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daac86ba0a57a74ab4427c1c6b19c6528b6b0a9bc0675d9957952ce54279687. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:57Z), 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/QZDA72096026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62528acb78ad1e24afdd83b8f35efe75fe59abfbb7b36e5eb3a974a7f7b1c7f7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA72096027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda3e2d882318ebe660f826a1730b03516b63546d613f71db3a42b291af9370. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA72096029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035be166eb7de8425cd356aea26485f12f8d455d376f58f0e7589de691de30d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZDA72096031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f3aa617386060b0bb83cbc1ee62bc8a2447a1536dc68ebcc593afd42c80a7c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBF2393266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bedb14e399e0c2f6c1bc15ebb9fa9d38bcea9ca159d1fb5a2bd6b74d7fb9a9. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZDA82451498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33503b2c83d237f88660361c6973abbd31f057f9074c596941e2d39c2b37ec. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZMER2487977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00f99e328b1549dac3e24a013444d5e92f5575328e8e0e6115030c12e7e762f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZRP42412407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf39eb737ad21ea1f6d277646818cfe0d99739c1d8b1d6eaf0ac0a48799ce33. 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/QZZ792409586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48914c3f35a7e943e097d18ec4eed95a96ea140dfbf7bc06890c37d5700d1270. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN62566245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60bc8a7d60bf64a411b250e990eaa6f8da3ed3c7a37cedb3c345daada1003b9. 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/QZK6N2582107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0038f0a02fa79cec52f9a17b16e49e6491a19c4e962eff28480134f0aa9f5d27. 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/QZRP52533604.