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 0x41936aa0ba0784922a2ac3104208918f4384beecd5a271f2443356df7906c8ee. 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/f9b77f76-fc9c-46ac-a79d-b31ed782ef36.json and https://artists.proofprofile.net/proofs/artist/f9b77f76-fc9c-46ac-a79d-b31ed782ef36.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 0xe62eeda3646f4511f6d66d08bc0519c3198cbb7fc24baf7a8b409ee60b1e98d2. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/US83Z2215724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca7c81867c737bc7db1c3be68630993e80d2acd0e389b4dc3b5b9e2b2148ead. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US83Z2505721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db7cc808c967b5869dbbfc30769d3995f9134f57f7bac0ca212bead6de04982. 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/US83Z2505719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b3ce7615220793e5a94e427b40b3bb68454a436c83b53f50112e18ec8390c5. 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/US83Z1773050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501bb68303ce0cebcd8a4b53285dcda7004c2f0dccfb0654db295b4553715f9e. 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/US83Z2109727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1336d7d262d711ca97e9d3698bcf9e11d1843a230c8165e253ba3a5cfe0e3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US83Z2037524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b17ba724261fd00acb2c0b8253bf17c531a657bee53c2baeceeff40f66636. 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/US83Z1648989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3bc1934d475ff2af09bad8320b0a0d03d97b94ffeca7c1a93b325fbff5902. 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/US83Z1811162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966cef79d2b8c8468cef1dbcb3d8cc4aad2942f7c383024f532cc783170fb8e. 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/US83Z2241675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce0da459ddc86fc3bc3239312b80d7c831615e3af7123ec31c1aad3ee864e9. 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/DEPQ61600490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b17ba724261fd00acb2c0b8253bf17c531a657bee53c2baeceeff40f66636. 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/US83Z1648989.
Inevitable Ending - Viken Arman & Goldcap Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941ac3df3ab3bbc5da528e9b6254139c288d0679e85f126df670f1f6d8d806a4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US83Z1655422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d992f3074d73e30074f8df70d63e31918d1b9bef85b16070cb976b316ea994. 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/US83Z1831734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0850fa0c1367d6a57ecfe1258638df5bdf845dddcec28cb80863a505332913cd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEH742176572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5d4b501915d5dbedb86b0c3acfee9eb0a8812c92c5232b3d5cf289a53663dd. 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/DEH742176568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62eeda3646f4511f6d66d08bc0519c3198cbb7fc24baf7a8b409ee60b1e98d2. 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/US83Z2215724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76185df9fde767418919725eb127a354c583e4d587c7b6f0ee8ce1e609405e0f. 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/US83Z2505724.