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 0x42094c73df7dd4ab21cf349729cb9197f87488bf27b69d3d0cae95df7763f053. 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/ee5d1da5-cb2f-4be5-8e44-feda4ae9b7f1.json and https://artists.proofprofile.net/proofs/artist/ee5d1da5-cb2f-4be5-8e44-feda4ae9b7f1.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 0x692f65e3c61740f8686a0cdf2899eac868eabd1c8dbc0613f125b2693d3dad72. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AUBEC1705042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5a3a96b31c93fece50665d5402ab3b1040387905c5179f4f3cc42ca646619. 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/CA6D21800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea749b5ee0bf1e6929e6b8a2da6c4af8834266ba7a8bfb4cea1f91f8365c72. 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/CA6D22000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa76f8ec45b04eab1d570539eb8a036e892e65da98d7595515de191af35746. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA6D22000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d68ee37ff83e3419a8ca7fa62a7da34edd1e8b9a42bfa04bcebfc3583620a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CA6D22000558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d4978a9fab6cadb7b9087cd1787e197ba9434ac160007ef4d1b1a3969fbea7. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:37Z), 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/QZTAW2369781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4304454cb00a9e745faa7105b5f2586def98fef44f9e1257fbd3e505aadbc. 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/CA6D22400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c786194abfb9018ffb3c76ec208c26f591ba2031dd148a7fc097247b08577c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA6D22000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb59b3510ab181547db20291a1c9ce5757fb628969a12da0264890ce57d9919c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CA6D21800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906653444d135ba00f9ab0cc3072fa89ef803c8a08007c5b8af680bdb56f5be1. 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/CA6D22000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cde93891eae98f101f0cfdb7d4a9f0461b0e94173dc348958a4eab30def5ec. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA6D22200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad7cef880c459cdce1f09bd7ae86bddcaf1c6b8eb7da41f1061e775001b146b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA6D22200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1206a4fd78ed47aae1454ecf806c9c497cd912602c1eed080acd0eb824f93e6d. 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/CA6D21900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea749b5ee0bf1e6929e6b8a2da6c4af8834266ba7a8bfb4cea1f91f8365c72. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA6D22000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8661303e6c9a1438f888effc79661920f48729c1dd4a9d6374eeb26ed92e877d. 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/CA6D22200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5527a594736ef85aedd72133472de7a59f75d41f277f8c6f9416c11f9d77fb. 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/CA6D22300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c786194abfb9018ffb3c76ec208c26f591ba2031dd148a7fc097247b08577c. 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/CA6D22000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea749b5ee0bf1e6929e6b8a2da6c4af8834266ba7a8bfb4cea1f91f8365c72. 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/CA6D22000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906653444d135ba00f9ab0cc3072fa89ef803c8a08007c5b8af680bdb56f5be1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA6D22000133.