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 0x23434455292be129531c8cf3cd1d2c95be4009e24a8ca2e04b6144e1ecb9a0b3. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/823c2607-10e8-47b3-a622-b36cc3303e1e.json and https://artists.proofprofile.net/proofs/artist/823c2607-10e8-47b3-a622-b36cc3303e1e.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 0x84828d2dc2851903b4709272b404e9698604c4164e728e1c91c6085cc53b6c02. 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/ITA647900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8c41870689e0897d7680ef18abba26866cf8fc97e84b797ca5bf94642a914. 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/ITZ332100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579cb6365b6b48f43e78ad1d7c057065fce4de96abf98bfdc34c43de6ecbf01e. 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/ITZ332100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56dbc2f6a1f4d2fb4e4216e0f565ab120db71a3e4526dad5c90e39010a72eb7. 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/ITA642200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf086ceaac0cd4357284b69b8c24fed5fac47b51d1ffb55233eadda1a596db5. 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/FR10S2070677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7e77acd5b42b57ee63e74b0b8a7a53fe700647fb74dad1d613f993470598f1. 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/ITA641001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27fc655c686bf72a25ce6be8e493c6d801b22f30637f925d2bb4c5b212c10c1. 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/ITA642300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d2832406cd25c331fb1715dd29f3cb958c56c52bab5bf25a2afc5bcb7df43c. 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/ITA642400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00be2f2e1d98a36d118f2a1ae58806d261cf8a4fa152983abc1a0cc8a0d6cdd. 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/ITZ331900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cd0010f1f0a60e9ebe8dff5baa2783b8f5740fc1ea7a71f53a481fb304244. 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/ITZ331900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6bcb9ec840407a626e85d982e1f11d768eee2ca015b054f5bba06de550b5e. 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/ITA642400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82352cbc07381522915bb20ce01931364635edde57514e4d38d8e75f39a1726f. 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/FR96X2272302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82352cbc07381522915bb20ce01931364635edde57514e4d38d8e75f39a1726f. 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/FR96X2272302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176998301b896ca839af3007a36efcf138a0668c6413ee8497e0e65ebcac1eea. 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/FRX872186673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f915c442a057d7de46837fe3b59a987c98561c3b9fa5959fccb083836ea4d3. 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/FR96X2280640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f6ad192e35164cf477482931c2925646cd8f70ecd3fb9bc0d7170f439a91f. 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/FR96X2280642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc44ed3f997d0847209fbf9f5b25ca55fd43aaf5c3c36e17ac25b137f2e438d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2241330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb329970b88b94fe1ee8372afef6ab6e798f01afedbe601c8d934700d0cc467e3. 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/FR96X2280644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c4c625ace0c3ad36ba7fa8a6604373caec7d235fd8baf6f214c807fe32d222. 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/FR96X2280648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95d285d3412cc0458dd470ce593c3b78a8c7344872fdf4d676c8bf186545ad. 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/FR96X2280650.