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 0xab79ea33a165c9b8375ff7a97fd48cd596d83aa3dc06a17cb8ea217226cf7b4e. 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/260f1653-c6cd-4d76-9fe0-4bc669af0def.json and https://artists.proofprofile.net/proofs/artist/260f1653-c6cd-4d76-9fe0-4bc669af0def.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 0xb8a0f72329f82b9236e2b2bb4fb8cd02642af311ea9bab548341839a33422685. 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/ROROT2304550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0db02c2110559248ed48b49e3078c10f1118236c639f58eb7da14c88acd6970. 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/ROROT2305240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d071d8f78ff3298dc75f0785b1dcade8d440be116c7f209760b2f108a839ffc. 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/ROROT2305230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f240c5cbc83f4a7d661e0b0c9fe80c0e66007f4c8cde305606897b2deeb5ae. 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/ROROT2305210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f6740f51dd7423785897f2bf760fc90856d67ac47e97f5744a1e963fcad14. 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/ROROT2400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1f1625dde1861904c1ed3b475739570653d20837021acca410f85a3e367e53. 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/ROROT2402140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01dc34ba5525677d74ad8339f61054c14ecc711665cafca04b135dbe9c77c1. 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/GX4R52474236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a8ab77afea99f81eca889753f32965d4d40b695e259948c755133b837405f7. 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/GX4R52424045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1c59a10c84dbc6ad369522cce0701f38af30a79813b83808b7ce7b762f3e9d. 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/GX5MY2475171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0c15b21226a395f606b01163e3917da187fd569be763733e4900621efcd5b4. 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/GX5MY2416349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2739dc3124f861255cd640cc59b739ed1c634dfe3b03310d7d734f57f015337f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2598540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c0ec6e035975b92b4cd61afccf8f2cf753cb1cabf05a53b60622c416a0e7cd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZPJ32484346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf882bcceb91310cc9c0338178fddfa9a1a5cb41d09c1c7f906b4c544be4c591d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:21Z), 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/GXF972592365.