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 0x73aeea93833e82cd3d3ed5386f8a1eaac83a257bf1dec5a6da4fa98bf5e1777f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35ffc915-4e69-4a3a-a709-77435134681f.json and https://artists.proofprofile.net/proofs/artist/35ffc915-4e69-4a3a-a709-77435134681f.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 0x464a4cf64fa52851bcf21a90fd72bbf58dc17fd8fc2594b9f3fa1e780cce21bd. 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/USQX92100880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c1c6089ab129e243cb19994961d75a7b1e45cfbdf60be22c824a5f4c1613e. 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/USQX92005606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873de2d84a6a1128fd6edf914c7239aaf7082122e6d6b3f8cbcdf652500f779. 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/USQX92003284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a651977fda78140f488ce15cf46f4660fc47f67957fd87a6d3c53fa65ae75e. 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/USQX92000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ce8827e1b2596b4d5671b944bad040189af3a4b3cd012dfdc8eb00fc79603. 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/USAR12300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abec175048dd249a26e2a1af070c8bf9c8d6bb6bb98a24662b2f537d4f9bf4f. 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/USAR12300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcb1206b0ec7a82d904f381b3624c1175eba2fbbc7a9c5f5369e52488ed1638. 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/NZSG02200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911d25a45bfa218243e570be4c1b61acc9b710ef4e85cd2f46785a0d1d68351c. 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/USAR12200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4fa54489ba933f045733743d982b3d2bafb3d2d27a2f83f7b32791d173485a. 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/USQX92101390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c1c6089ab129e243cb19994961d75a7b1e45cfbdf60be22c824a5f4c1613e. 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/USQX92005606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5b95823db33b7785e1bb7f7ec99080733ed7482fb23b1718a1d0cf04e39163. 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/USQX92004844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18a3893879c4e2740ebdf0ada60391fa07791428d4f140f2d8cf97fe2561730. 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/USQX92003004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ec5bb18c8b0fd7f3eb3c5227057eb50b2d421e11248b229f419cafa49d9428. 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/USQX92003238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabe1c46fcc2c7077adff0a8f2c668735e1efca59688394754f351a719075f0b. 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/USQX92002818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb938a1dba6419352aad31519a347671ed913c266a407dfe96dd8c492beba2e. 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/USQX92000787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcc803332b80381fc3c5b37af30b33394be3c484716bb78cfc45ea6aca1ff94. 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/QZFYY1901760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ec93dc6d58f909c7b66dbd06f564388caadb7910bf8c3fcc26efe8886ecc63. 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/USQX92000289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d6fc55b3eeef2a5ca28ae948279af19a9d717887f7ce7d695e2b304a1b421. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USQX92000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a651977fda78140f488ce15cf46f4660fc47f67957fd87a6d3c53fa65ae75e. 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/USQX92000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb938a1dba6419352aad31519a347671ed913c266a407dfe96dd8c492beba2e. 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/USQX92000787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d6fc55b3eeef2a5ca28ae948279af19a9d717887f7ce7d695e2b304a1b421. 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/USQX92000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcc803332b80381fc3c5b37af30b33394be3c484716bb78cfc45ea6aca1ff94. 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/QZFYY1901760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d663512c61297608ae12b90feecfdde3cdeaa3f2ef455efc225077d2ed041. 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/QZES71945543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e0f040bd46df1eeea0427390bc894855300e87f484370f477c0b8a2a5dce3d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USL4R1819461.