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 0x5f1350a573a8cd1d1cdcf252143ab5297633c7bfa0ff6f138f7a356b4681ba21. 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/6a24e07c-87ac-48c0-ad76-57eef5f17a32.json and https://artists.proofprofile.net/proofs/artist/6a24e07c-87ac-48c0-ad76-57eef5f17a32.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 0x380e8fa1a016c53d3ce1a0d070ce7ccd42517f195bbb084b88f17bfb0e607c58. 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/QM6N22286220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118768037da5248b8ba05ab8c4ba8634013caaf2f0884e7f04ba3edff8eb6aa. 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/QM6N22286222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07fa0baca812800783c783aece918778b92c9f853271a9b23aaf4a783adc51c. 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/QM4TX2183133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1ad5b2b65619c2298442f7cf818ca9cfb171817084a256219f5578c158cf3. 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/QMFME2159174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522c0f42d51a4c4c77f554828926f6f27c2bb300b04ec8f1955de069eb415e3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QM6N22287457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2a2c739fa900ad9a9844ddcf71976a60e1627fdd2013088018519dc485eb6. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM4TW2260092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77feefae533c7a6c8972c802ef107378c13afea49565594d2ccd3b3f5f495929. 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/QM6N22287460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816612eb2bea827aa40529a6450b9ff1ef2b06f7812f815b822ed987d9a9e69b. 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/QM6N22287462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2a2c739fa900ad9a9844ddcf71976a60e1627fdd2013088018519dc485eb6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2260092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65ffdd6c23e3c509d08e7e510279251af3b3a8fb62ce9219ec02af32da792ae. 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/QM4TW2459712.
Steve M. Grocery - Annie DiRusso Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54326a2b934149e6a00c0ffdfc55fdf6c6f8e92650e07ec092bf68d85aa453eb. 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/QM4TW2459679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794797fd562c3e1c5a806d8b7bb6a2dbffb961769d887d095a6cc268b75ba60f. 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/QM4TW2462615.
Steve M. Grocery (Annie DiRusso Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54326a2b934149e6a00c0ffdfc55fdf6c6f8e92650e07ec092bf68d85aa453eb. 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/QM4TW2459679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522c0f42d51a4c4c77f554828926f6f27c2bb300b04ec8f1955de069eb415e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N22287457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1ad5b2b65619c2298442f7cf818ca9cfb171817084a256219f5578c158cf3. 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/QMFME2159174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07fa0baca812800783c783aece918778b92c9f853271a9b23aaf4a783adc51c. 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/QM4TX2183133.
Indie / Rock / Alt Compilation: September 2024 (Alexrainbirdmusic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3097f335984e75a3bb94199d15e3140e6641def8e44687a6f7a9458c29e9fd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM22455946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7148f982c83daabbbc3a561b0df93e53a19add73c5d63ee217d9bba881a88e8. 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/QZK6P2432575.