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 0x50df791017e02256d76cfe107c791b0d7dc71cf4714094bd6ea98f8ba19fdb36. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc45186d-1409-41b1-954c-2b6b83478007.json and https://artists.proofprofile.net/proofs/artist/dc45186d-1409-41b1-954c-2b6b83478007.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 0x061430ba0a536cda60e000e671938512dbb2bccb91266dbcd8795c28b644ea04. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:57:05Z), 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/QZFYZ1904017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356d5495c4dbb3c302f9b5d4bf6405ebb7c234b1e4113ab04bdf73d1e1289ebc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN31909745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f56d333138e0557be9619f02872172258b7c96f7eab7f6c8398e1fc58d477. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USBAE2095738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a803cd3d74d159130513dec1f5e697130ce926dc01c6f90b76ec63dd88a10dd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:44:16Z), 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/USBAE2095772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26fd7116e7eaed89649723e3ed4df5945f5bf40c24fd07a3be163c7cc2dde1a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBAE2095773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e5f1bd33443470086f436df250e80d255ff45f496a1e9617843a45209b42f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWQ2181988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb90b87b254bff035bc3d3b4eb0943faaf735aaed53236af26c45a9eea6daa. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:32Z), 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/USBAE2196127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb66a0bbafa94342e00efc0a12b7c3b210eebe0596749b689f3ab1661f5ec6e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USBAE2196184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14289701f48ffef8a9ba3217898458278c5d59f420f640b31512827a2be18c4. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:29Z), 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/QZNWQ2182844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fccaa6847d7e1d134d8e6585e3d5ebb06b0edb2751a9041bde901597ddd864. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWQ2182845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58f57b7ce48e019b16f2bfe4a3b0c0e1dc13acd3591d6ccef69b4e853496d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6Q2191943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea50cf5bf0dd92ae51a167d4d99725d894fbcea84ebb7fc2e41274b2e6288e07. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNWQ2182846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bc8e84840be72699b28c3d71173030f325086b01d639aeca6329a1f753b17c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:27Z), 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/QZEQU2267875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e3fe243aba749c0fcf3f15282b57469f18468a33dea6912327548fb9f8615. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:00Z), 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/QM4MA2200086.
While We're Still Friends (feat. Lee Brice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150132eddb7934ca734c19e6ade0eafa1305adf975087c5ad78b25d867285f1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6N2446692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150132eddb7934ca734c19e6ade0eafa1305adf975087c5ad78b25d867285f1. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:44Z), 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/QZK6N2446692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae467d958cc140f028a9c2853cd5931e51ae6a60943f0c638648e40794a652. 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/QMDPP2101249.