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 0x50ee6fc3f07cd1ffe37a9cd5c136e13cd24f5ceeee2f17db22d47e95edbaf40b. 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/f9a8a725-49e5-4c2a-8fbe-0e445615c20b.json and https://artists.proofprofile.net/proofs/artist/f9a8a725-49e5-4c2a-8fbe-0e445615c20b.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 0x46ae05164252371349078f8d0103eafa374e1ad836f602cbbe05a399542dfaf2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12102173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645f78ae2b4d116a8078334b71184120f1f065295a1dcab19402ecfecb4c9eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEDU22200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c90174c16f5a76f66f2d6a9e57ff654c7c77aec6fa8cc3065909823c456f2. 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/DEDU22100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839b0aa663eb193d90655e3f65d20889442d1ec7fa24a45c62e336048770dd30. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1700236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c90174c16f5a76f66f2d6a9e57ff654c7c77aec6fa8cc3065909823c456f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEDU22100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645f78ae2b4d116a8078334b71184120f1f065295a1dcab19402ecfecb4c9eb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEDU22200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00984560165c922b485f1bce84f5b65ef55c59b511a80b280ceb5cf21ee2a6e6. 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/DEDU22200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c90174c16f5a76f66f2d6a9e57ff654c7c77aec6fa8cc3065909823c456f2. 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/DEDU22100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f85af9ac8316e5fb3568e171f89a175bf9ec60af75d10a8a0b97266d96cabc4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2066847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1ba84f61eb9efabfdd2be96f077e3766296f64ec3cc6934a99628530b2fcec. 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/QM4DW1535659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611b2cc3de78f16428fa640998f31acd635eb0e0bee2a3bc6e36389fb20b99c. 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/QM4DW1535660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fcc76b029d4ca2685d44d9ad318de9cd81a053c7abcbfbec4a11c2e4b77243. 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/QM4DW1535661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd0720d374cc45cdba56642795b6fb23b87e70e805b1bbd994a8613e74c1705. 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/QM4DW1535662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4c792b18837f6e1d57ab427efc6a4da4b3c3c05396051d5a3cd9b2767a87e. 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/QM4DW1535663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195399a42b51fed5f9c0bb5974b427f85623df20bf1bf9d40b1d2245766b5e45. 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/QM4DW1535664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7754883fed242678ba0a7f5c93b4f5188ad490a3ed2964fbd9eacc6667d360. 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/QM4DW1535665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb67e83a615f2db7cbe0c97a9e07e71dba4ae7e391068bb5a029ca1df063fa3. 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/QM4DW1535666.