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 0x71a436c1b7a634c821676ade68449a94f7d002b54cf1bc64ad9332adc9f0c0d3. 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/e5ce763b-0f37-4841-b2f4-99c9f0d90bb7.json and https://artists.proofprofile.net/proofs/artist/e5ce763b-0f37-4841-b2f4-99c9f0d90bb7.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 0x3df19137f2c551f7ec37a0d15839caf3903361c767c96332742064ec237afc5d. 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/QZHN31963665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8e349475446134e6e651fa7268835c943bd4b915550290981770957c51556. 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/QZHN31963666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6900e8b38bb0877a299d35ac38be70bcffbaaf8cfeaa546337ce172cbc0389a. 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/QZHN31963667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad5b74dad5cec64c2fc7700ae82f0f6cc20611fed2c95a9d2e78dde4f5f65f. 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/QZHN31963668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2e7676e6063a394f0b86dc66eb18a7289f3b7562bf69dd6f337406937a0af. 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/QZHN31963669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef57e4ff5ee7ed0c5c94c20971fe7bfca0199d176fd204faf0cf45e665ad65a. 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/QZHN31963670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d4cf8293b25aa99f9d42108d6c90247cde8f13cd683a26b96185f7b628bbdb. 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/QZHN31963671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030f4b2b30e6baafbb2f451d2e2a62eca6f609b94b52fabc880e24231c7b7a8. 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/QZHN31963672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06db1a233b3d7433b51a5dd0557e3f9623dd2380f73c8af2d325a5882ef6d8d1. 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/QZHN31963673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f474859ab202931b0848c1bf48c6aa3c87457e87be451042a76cadd3119cd6. 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/QZHN31963674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9ac9094e446f8181de5aa8cdcf6c36f09c2eb746c4fed8a36ae1ab83d7a682. 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/QZHN31963675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dfbc2dfd4eaedb6f987965dda93b50c73b7e4913fffb5875ebc32435f9c770. 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/QZHN31963676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235e8e2ad8cf39141f6d42decefd2e1b413c3971ff55a6a469411dea40ee5e96. 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/QZHN31963677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3857e308496c2cd58f44248c5e8cf7ad7bd34b4807d5b7f5f6c74cb097701c44. 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/QZHN31963678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e263413752cfea82da734fe69f53c05c872377a4268c287ed0c3bd5143cafec. 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/QZHN31963679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ec735049d0080ccf35ff480eed7cad3ec1cabf09c48aef82f81c8b331dcaa5. 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/USUG12100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96120063f57cae0b6d04141427d19be7ae3115492d0035b147eb5677ec642aae. 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/USUYG1550274.
Back on Dexter: A Gangsta Grillz Mixtape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22017dbb313b92d5b8ecbedd4294d88a15c1c31e34aec007b42b0f718fffd724. 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/US5ED2202550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4f52aa93b3f92076b1d784c854fe3c98d131b0f5d3cbb7a683ff27ba716896. 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/CA5KR2380062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8becbdb21debe87d41ee233b04d4b69f6800f081cb2e6d8ed4186423548afadb. 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/USUYG1509453.