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 0x52243bd770488576a5d9ebcf1c9381581e5d04043d4eec1cba034d03bb7886cd. 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/ae3c11ba-8046-45fa-987d-f9d461ab1384.json and https://artists.proofprofile.net/proofs/artist/ae3c11ba-8046-45fa-987d-f9d461ab1384.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 0xb8e846907de540020f7b166bb7e7342e6ac3a235377f9e63a0a4e581475f484f. 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/CH7812402618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd36d738d9b13d901e090f43807ee3d54323a548287e8f3b05d3dbc2f7169a5. 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/CH7812369126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe23f07a6131374fa5df3bfcdd814d1c2c2be6848da67544625d0e7d13da1632. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:36:30Z), 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/CH7812402619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fd2ca7361ca9b7055aa85d5ebc5eda0c1c5ae78f4a7c5a54c3befe20e908fe. 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/CH7812402657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57205f557b5f3d17a9ae82fb45e78692439e49fa81f58022210bbfdc97e1859b. 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/CH7812402658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e016b063695bfa7306a613d7827e742931fa13541289703b1eca159fa0a0e6c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH7812241722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187fbfe32589bb5f5e85327ee004a4f27d999db3404e93dfe1a7f48fa35d131b. 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/QZS7J2243238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5cbe436fc857be64eadff41152f892432b19916ff752db64e26f0eda7b5613. 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/TCAGJ2218972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895ac92ac0f1f87e3b3aec8a0ee76806f0a3cb1358a4a144693f663bc6f93ddb. 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/CH7812226904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b7a946f62274b9d1cddcb2720a09a75740c4d9c2546afd0780f9f600904e2c. 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/QZTLA2423346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d05a9e143dc5615dac4ca3797ce0be28c8e78479e64c680a770389e7093e4b. 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/CH7812109545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f7b6e33ce826346f4714f659ede111f6afd236ab4038695eafbe0a332d1d7. 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/GBKPL2172422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205df6c7d5d995ae93413518fd17f95c602f41123647a9e3c672ff2b979e3a8. 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/AUBEC2152177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f97a8342bb054eb09d09942c3f5c9fbd28a460e9e09045637e24d2fa47c9e22. 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/QZK6M2524323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77888c0fd2efa6473ccf712b8f0b308a51d2599e82e53f2c5d609b2c519ef745. 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/QZES92504642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8107310efd33d5b3359d4a650134c5e7d71e2f2c7969669380f7f36ae957b55a. 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/QZES62557904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb247d620d0b90fc249b2319fd1f2ea6b6e567d3e242293819d44a2f3e56eb47. 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/QZES62557905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09fd839747b75fcb32de140ea1a3f0c0ab75541172d40dad3d82c7968578351. 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/QZES62557906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74216490c807841be77ade717af506e27faf4da50d310abcde33446498cdc7b7. 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/QZDA42460794.