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 0xbda02e610b6352dbb1434c0ab355c69faf10e73cfa888c0eb5a541f65197702b. 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/8e710652-2bd6-4c2e-9b5a-1a88975a13a2.json and https://artists.proofprofile.net/proofs/artist/8e710652-2bd6-4c2e-9b5a-1a88975a13a2.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 0x99647cda7633fa4bd1dc864c9646047b1ebb217f86948ff7c56254a425dd9688. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:56Z), 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/ESA011856476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb192c2ca5bfc20609fd555782250d142d6f4c3fafc3d7e95c675d141dbc9e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNW72358092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe17e4745eb795ae5a1e0970235af693a6cb3b81a47ecd370bdeeb4b56e2f439. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZNW72358095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d254d3f78d6f1ff098971329f222bb51c49bfe77549b6bdd82e175ca3cf4d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNW72358098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac1ddfd5698c0e22f480fa9414a34001bc0e67e6c15bd3b1441170e9334516. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNW72357854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b4eaa345f2b8d3cde5a67ae447343889ccde02c7577a5fde0ee57219d4b656. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GX3Q92329373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98472610a39f8cee989bf4a2221608dd4e28124a6ed63bad2d3f8452c53b8788. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92329384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef27e99203f3fc70410874be4114dc254edb265a7d9037663a7122217e2b78a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP1971946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3338eae3a6c6e68c5a45339aaad167abc4fe7a230a6f7cda08daa003f696162f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBLFP1971950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835fc30da8af9c8931daf15140f4fb9dd2f93cd70d61fd5d4c9d06435e4c4e0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP1971954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c2591156f8527bdeee115a99934a4fc4ea5a993defe92cecfe11f8f368c0df. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX3Q92325067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242488c96686f502f2148ec18f48b1c348bb5a2e3ad067c209106c989e5791e7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:43Z), 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/GBLFP1972022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa2e7890851cdb8314cc7bb84137a46bfdd228440ad4e01726de7a8ba933b43. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP1972024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f123ba8beb6927cfc8ded24ddd18e0aefc65e6b10fbeeb63055b8142dee4d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLFP1972027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a5e452b74d76b74a1d6fbccac35e8cab53cc28a71681afc45b354e884a5b41. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP1972032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa37456a20306f2e4bf887d247c1f28a3281cfee4251ac6ed30df47974de83b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SE5BU2569008.