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 0xdd12ce06e7f2c2eddf17ee2012a5dc307e974d929aa3aad4cb333a5c78bb3c61. 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/a3483593-5a44-4bae-957a-46695d07fbe3.json and https://artists.proofprofile.net/proofs/artist/a3483593-5a44-4bae-957a-46695d07fbe3.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 0xde84afaa64776922124a04e4d31640f6966bf1fe854eb488272e4804713734ff. 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/UKZGC2307148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3009fd80425d0e1f678bbf9e40727b57763e4fb09a8a116ab075680539854. 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/US3DF2476543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6347f08c77873055f2954ecb0bf40e03e7a076629de09935ba51c9d8f0c341. 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/US3DF2450268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1c42d5a854151f8bc0325a579a39c33a804b3919ccbbaaa3eaa1c2cca3f60. 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/US3DF2472900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2ad63f426d87ff850cc60699b5693c8dde897793020a4397d3708569b8d53. 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/US3DF2472902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bee15d4d3b6eec2d961d1c30ae0088543bb0eb0b4e8b9ea441f651240ce81e. 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/CH7812406681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5094f2f833576d1a97aa7dd9dc4c1531c7bc13e1d8eaabcbd218b41e8f568a. 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/GBKQU2442677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad6ec163c6d01ab089b5de5d44277d0743046dd51b362071ea3d61cd55fe95. 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/GBKQU2436195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf95e0b13498cade39c9d68f1874dd1634d90b8d3b539d4e282f37e7937845. 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/GBKQU2426015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49e4759ec99b00cf73dae540d02f4c6e933630be8a367128bd85b8e8d8db90. 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/GBLV62308969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71c3e9daba1564fc5573948194a9dbcb620cdd02b4c1aa66dc9c8bd57ed8d7a. 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/GBLV62308907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab71f2b4593a5a6ad416240aac68fe2a430c060a97553b699e71495d4696f9e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLV62306410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce453bcc9bb79644e0b2af0f41b6e525a154a345c6708a7f5735c547792a56f. 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/CH7812364710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d2a57027cb1ce7d2d876306660fb295b609b5df1f3fab6449751aba39b410. 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/GBKQU2367295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25df45dadc62eb92af4bd756e5bb537f6268438b7608ea356b764bf3513d8949. 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/GBKQU2367795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bdff3895ef2dba20f3bfbc2b942599e20faad3911548ca93d0a5a78e3f1c42. 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/QZNWW2392200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9224b9e5d3e406bfd1f78fd879c04e174f996e42de75be451472a619bca6e. 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/QZMHL2365667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da62497b95f6a4f7fd6a6ad8c1aa94de712ac70b0e26a216e9ee89e47deed09. 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/GBKQU2350550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3bce6ad34982f7932e826b6387dce34379f5e098a47242628842f9a9684566. 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/GBKQU2350525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b05754def28ec1ef07bac06cd85ddc2f6050ab87f881160197259041c0bffa5. 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/GBKQU2334793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043ff0769fbebb1c488873eb01a82441db37fb09f991c80e1e4b496abbac767d. 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/TCAGY2344117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ac489e44c5f2381383ab302b01e2e8262704d344750addf567a7637036f37. 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/TCAGS2236300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968e512edd415106c8d9c64752a2ebaf483a192fb88b312de288002dd8bde7e3. 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/QZMHN2261201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9c1993c65afd801eac022b283e8919a95aa268e0b4d63b4c84f2592897c79b. 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/TCAGE2275354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72858e033a60d593795e9220439ae78b07cd1864ed0b888d954120917807c7eb. 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/TCAGC2223832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50eb715fd87161b05bc27f5d2cd8af91cbaf270bfe5dbb8f454fc7fc8e878a. 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/QM42K2210990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413d811d6d01059b3e18319757f30eb2281f88e1bbdd8db70800e91a52a39668. 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/QZMHM2086008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876ca5be69bb41c189a6c66adfaaaee60aed962739a15f0c852177885578911. 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/UKZGC2309270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde84afaa64776922124a04e4d31640f6966bf1fe854eb488272e4804713734ff. 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/UKZGC2307148.