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 0x2e6eb9a8052ed9a3f832f146228687cd22c3c07033519936d453e5c9b286b287. 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/51476ee2-df04-4725-b079-6df72d19f32a.json and https://artists.proofprofile.net/proofs/artist/51476ee2-df04-4725-b079-6df72d19f32a.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 0x22bc888061e11dfa7f220e2cf4a136305b412c195aba88e961329b0e3352a057. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732324367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe406af658af385454880014df81f04525f3c2a3f20e079e0977d6edef2333df. 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/HKG732318952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cf77d7fbda31e4ecf94c372183ad0939fa4a87462dcfb7ddd7e0e5d4e17d30. 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/HKG732306023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3c0ee0c7c7de2b4051d1d30477c54f53dead0f1ff13aca6776ff2234db2bbe. 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/HKG732292119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bffd971379d9600c8e5c7a7d8dd59f57a33e8c26da9aebd74fc7601eafcd930. 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/HKG732449342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d05e57669025079cc0437c53a521cef132476dfdf9ea3bab610ca645fa13cae. 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/CNZ852316400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8558e493447c57a1ba3234b382979dd0c89120d53f7ddda464b230fafcb1c1b1. 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/CNZ852307952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7a9f44e7089ff3ae5ddd03af4e8d3551052d15757505638fa2716222aca5c2. 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/CNZ852307359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dc6c367738346e7366481216d672288abc1829144e8224f99f319d45d089f1. 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/HKC371730027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9062b1c0d682872f6ace55011b4c3aa883c56750f67872fdb63d3161c933efc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKC371730028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbb37741813af86767fccc50c49f144e209e252970c4f8084e4609a3226bf78. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CNZ852305838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ead50a507787547177a7e6f7fec83cf2efe0b6b3286c869bfb7403bf6c6e57. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CNZ852304144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9a9f948f310cf8344d03dd0bdde8e89a2d56ae93eaa1ace642570ff5261ce. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CNZ852303878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635e197873cc4fc55e026a5829569b072a72d4efbf3af62c693d51241843957a. 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/HKG732288548.