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 0x50b7ab54fbd5d97169c4233529b67a7c0ed5f1b3b18346f778c7d5248b94aeec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2db76a6-b6b2-43c3-91c5-53d2d90cca70.json and https://artists.proofprofile.net/proofs/artist/a2db76a6-b6b2-43c3-91c5-53d2d90cca70.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 0x859a69a87a8feabe9aa2385723dbe269b20f9541c5a3033d61a2f1b6833cb66a. 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/GBKQU2066271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e9f79cd0e3049e957333e02e11d654b2c3c76603bb8adca0caaec02ae59144. 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/GBKQU2066277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f434429ce9bcc0d31b48a0a09ac837e54b438649a523c94a7b8b2d8273117ce. 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/QMDA72434520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fb4a5feb87c56700cb8d6318afa65c44f72e9d6b46a2fe1ba147058494cc54. 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/DEZC62445325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23d9b228cad09ff689d7fcaeb440d5dde64440ed1a5196abe6a0703509d6ff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62445326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12575f7908aef1d227aadd92c4990f8c114ecde23b8709033f8f8aeb692a730. 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/DEZC62445327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1787293f445cce58291ea05b466806695c34cdb4700d204e159abfe56fe50da. 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/DEZC62445328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824934ebd14182bbfb305bc1230a975bb55f30f3d6db0e97c1f99e50f26562d0. 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/DEZC62445329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c583992f0c385de208fa1296d9df8e0f4149f6baed134bef831ac8425483ab. 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/DEZC62445330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b12c1844e70af89226b6b39d9cb47f8a29d8e4f2172ab47aa880cbdffcb65. 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/DEA622401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94cdb0c0ef2034b7b7fc4f1d861de54191869872439f7c8f7ffbf283725815. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEVY92400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c52a8f639f36cf1cd7968301286f0c9c98242b173527b37cee9b7aa2eb5645. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEVY92400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96557b603c5fbbf1e479b9257ca01883567725098d98c47626065ab1200ec1a9. 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/DEVY92400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edc412efbca089cd23cbde15f69cf55ab2fff60ea9d983eda8991f66f9ae00c. 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/DEVY92400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94cdb0c0ef2034b7b7fc4f1d861de54191869872439f7c8f7ffbf283725815. 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/DEVY92400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a911edd136e27fe338948a433ec4705a9afbdd9f52d9b7710e29ace9e459c2. 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/DEVY92300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066d7c5e731cd3abfc7a95381f1b2060859e7544524ada18a0616af94cd2937. 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/DEVY92300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0640e3a519ab4794c13a4101f2417574553522d702b7dbdee7a8fef18b38a3f3. 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/DEVY92300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066d7c5e731cd3abfc7a95381f1b2060859e7544524ada18a0616af94cd2937. 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/DEVY92300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc74773d626effc5a7db474a5d2f367322010ec60efefe41b84d0ac7da6cfc9. 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/GBKQU2378780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e7d06636484bbf0a867a7af0bb078ccea8336c864b0ccf846675f7ad98132f. 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/GBKQU2378783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aad197f92e27bc85569be27c72579f3893a3eee293ad6e497f6cc140f78c65. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEZC62359376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4d856ebd03ead30e9df7db2583842d8c443ec260423ac610691375babb00af. 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/DEZC62211171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5889819e9649b9e77d5a86764a7c691d489e39e7ed003089d25871fc6ba971. 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/DEZC62280155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa343cf2fd0d2fd72f35e7fd95e64467fb3576cfbb702009fd5a3ba3f417c6e06. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEZC62261242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02dffe49d46664b2e40561a56b636e384edbc67b586ab28987681645acf880d. 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/DEZC62120847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e5d59f7b570f95ddfc57065faf3e875f6faff4fe7c694e99b8eceb809b2100. 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/GBKQU2109261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f6146e677c96997421288faaaa8072d090bf54cad033690f4e0ef7d45888c. 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/GBKQU2109262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05bbebec0cffffb8527e37e9d4ee6e8d572f573cc56d328531e98087f0d35be. 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/GBKQU2109263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b988fb3db916138deba66cc5771835135b3ab039cd1967da64079bf82a8acf. 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/GBKQU2109264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3aa1f6f444d7ee41d01ea03acf3151e8eaaa221c82a04cfb320a811ec7e07. 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/GBKQU2109265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04700ba79c15293097020518bae907916472bb9e5fd4f17ca0bb9752a39761a5. 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/DELJ82054572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e144a0e2f6b7a51e2213825d60d6dfba407a1b4813faa507ceda266155d1d9. 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/QM4TX2004448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c9a8033b57faafba813850d47782e44ce95d0a48b8f9f34de6f82548f52ac9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR2X42259678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748330b9c4848cbe321bd8a530ceaf74426df49b21b8338872a76c2fdfc25105. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FR2X42259683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ba06fe2d7fc887a9eb923182d6a0151d12fba172f6da0708db067a224dcc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEWN71700324.