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 0x0c7c19fceda28c320526304cdab79a9a2bd6e778ac4aedb965d7bfbbaa4932d8. 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/746d75cb-96c2-48e6-b87e-f2f37fb0d8dc.json and https://artists.proofprofile.net/proofs/artist/746d75cb-96c2-48e6-b87e-f2f37fb0d8dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Wall (Buunshin Remix) / If U (Synergy Remix)
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 0x44ed0fd9ade430bc8f6c736d51c61349c2f4f80c708a47aa1dfe78b6899758bc. 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/QMFMF2124270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed0fd9ade430bc8f6c736d51c61349c2f4f80c708a47aa1dfe78b6899758bc. 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/QMFMF2124270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfebc8cb04403882d99989c5d18d8fbbc3be0bac94e46925dfbfd767228f6da. 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/GB2LD2210294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f8470ba4d43a451891a077d8a5cf7a41cf3d1c4b9379804bee24b8ce7544b7. 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/CA5KR2124374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ccebb06acd6d170a0244e19fd9d97f209011ad539544ccc3ae7103886b0b5. 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/USA2P2244252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff57b4b9f878c325dc81ff62132cd0b0ac85c0ee0c5cf32560fe743856bc46. 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/UKACT2133031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700b1fc2c715cf186005c9e5f134e51df04ac82a0412362cc4ce0838c20189eb. 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/GBTDG1301865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d59516e2adb294da0217d2c0cd99b5c85f062e61dd1e5f338288757086aba. 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/GBVPL2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ccb08e75925caa442e2a2be592f94df50d23f7fc036e96135034d39a4a3e7d. 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/NL8RL2319762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593388098152ee4e541a035426436fca3a26fbc71a2d4ba2e9d8d54aa654791. 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/QZWH32500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb278a0b304eb3bdd48ef1c2462217d9cf46a8d5f61944f48e305d596361ed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2504790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300f5d07f43d44ba9cc774a5a4048c72a3091da2a7896ce9f53996af0aea4e1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/UKU932390047.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
City Of Ezra - Buunshin's Fallen City Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce0cf7500d57c3f1728e8ef39951b69cef50b9fc8affe9092f04c598908f37. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CA5KR2181037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ac59a1f72ac8f750324fe0f152028529e2117a3ac1bd38042c7e71b6df599e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBS5E1100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4e19b3583c503f52b9a61f99373002549d8fe604565487eeaffcd77749fa33. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEQ022391897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7487bb619754a313d2ad74fb09d71b18452e421bd63b792a623662ebf08a33. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UKACT2031801.