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 0xc1de0a5412b23b4bc6e3627117d2a5ab9ce9bbf7a4439500bdc151ca4c45201a. 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/d5877f1f-cca4-455f-9168-b2e286d2eacf.json and https://artists.proofprofile.net/proofs/artist/d5877f1f-cca4-455f-9168-b2e286d2eacf.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 0x29a35de163f6d63c5d424f6fe1e8bd1390ff23a44ef72b16ee706317d10e7db7. 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/CH7812357704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e5101574b5f6bf5ddac35de5a35bbe82ba87dbb787a317feb4b9bb64e4f753. 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/CH7812354634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfa5af4df2da0118b7faffa731d18bc78111cccfd68ed86fc498241a6089517. 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/CH7812354028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32358bfcba7623a63b88f86af23c79773c9f4e698e70f33159e17666d953a0e2. 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/CH7812351726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911a8a61be080179f95a5e74d41c171d1fda6f9f25d5f2de95668671f5590cbc. 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/CH7812344163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7597a9ab5591f6ae8a324f454cd11654f533a330639fbc7f7b32e290fcc6ec. 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/CH7812346380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203ffe60d09a4c2bb346b0b7aa675a41bf01ba6348cba88f98feaad2de3b25bd. 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/CH7812236544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f29b5de9b5c941183853595f57bad2836db92b3cd75cef4e7b74fab0e531bf. 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/CH7812232454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da4a527bfb89e8736346b76e7c1200c090925bab027e6f48a8b8454693ee8f2. 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/CH7812227222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c2a41a4286fd19178b4cda8b2475bfd4f0fd802210ad72c40d9f5f23456c6. 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/CH7812222873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e68e0f04086c111d2bab358c64e9fdd336f9bf678051c77025565ace9e04492. 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/CH7812218593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad75fdd4f241fa2022c3c73d1e67899af9205350624cb0e61e0e8389fbe20f83. 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/NL4NL2148997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844544cdb2f8916492482562ac25c85252dfdc2f57c28bf8511851445856a2f5. 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/NL4NL2123901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6808e2adff49c27f69d801f47f5a6b42c5cb87c9bffe04470e923516e9a252c. 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/DECE72000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce9be4de2e0d5eaa30b867f437113bdee86aa0ca8d358c3c0e2b84a7764c8f. 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/CH7811932475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede5b4af0e50bf7b8106178690e6890f64e8b4af5e9de2b2fb7ebcc0be903d47. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:10:30Z), 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/CH7812214816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ca8da993d0b0d7800c61e0c110d025bb84dbfa08d95dea0008ca7abb7fc12f. 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/CH7811930236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5069e2979bc776963a8207bc6619e2ed25f10e28cf11c73fd66c3880db195e. 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/CH7811929801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0716c8a3d298d80e28a29a12c3ed7673ebe7aca18e691eac10eb6d4e5b97e. 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/NLS6R1866171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7bbeef7c3d9373ee71d61681e2107f3e1c614187f8f0cb2ad64e4a807d7f65. 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/NLS6R1855613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09caa28a8d8a99761d467289d37f51cfe83e4e2d21283d2f3375035248c900. 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/NLS6R1707093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd6074ce954025a0b325d2691bd7634794f6d0504604a3136e4d5f1823f595. 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/SE3OH1743371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72288e98b5e1d23c258db54b4346bb16a4faec293d7cb3c1aa9e6c9ad8b2734e. 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/SE3OH1737621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db7c1af45c69279bc740b65587de063309cbee53dc9ac8189cffcafaee44d77. 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/SE3OH1733172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefebf60816aa70ad49203a1a0dd083abf28bfd362a3033295aacebd909874413. 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/FR59R1923514.