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 0xd24d751c978245eadebba06df61d37abde08c6107800e11110c6bb40ceda0b2b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0596ed4-7057-41af-910e-952fa30e1241.json and https://artists.proofprofile.net/proofs/artist/d0596ed4-7057-41af-910e-952fa30e1241.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 0xaebcaad9054b64b136f4a257aadd6ce1823467f6c0c46b55f773fe8e5ce7c092. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN62582178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26da868d61b71f7b6198433641c8604943f87a1dc6e12cfe51567db34ffdbae0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN62582179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75fbd4f4ac03831f7c53a5fe08983a79f1237ce79e84e424560a699f2088d34. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:36Z), 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/QZHN62582180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21058afb92603997d50a4ce724c35dd4b2570f11d94bddf01230ce25175db406. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHN62582181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51eb9d70d2aa4ea258af68fab09249f8123c0a2b2a8da458c386a2db12e6ad0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN62582182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62aa9e5831c9d3bdf60475315a793127a542d9d2acfe64306352fdd9965390d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN62582183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3163905316e2a383ee7497f9d182287745fc53b272caddd510d0af57256c7d4d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN62582184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56956c148bdae4bb5c8be6b2931e16655bc7390636ad969f8ee638147fd9467e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN62582185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74d1547c0c04ad43a6e6086d849ec2a33714988e69a1be54e5923f6262436a1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN62582186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf97d8c9704f1294a64414c47cad412224d136a4bb1e155fde4031a6550f1cd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN62582187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86770b6130b6f39c06873af04028545fb02d1dfaaba2715f9c8bfb0d6d800716. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNA2510615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314bf28c9277e90846f53a0a48a5be32a853f408e769ebaeefa291ac6beb7d57. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHNA2510616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc8d66f451fbade0e1ae61f982e1366ef4cd1a2f2ad9914bfad47b9586c540. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZHNA2510617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136c059bd13654db019f0bcf29df854f5060267b797a1df8c7f61f158f1530d6. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZHNA2510618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eda2ea6a274ea00b776b2966d698f8682661121cbd804ad40ac451368a8429. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6Q2565588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb5d5b861164adb2059c40c8d75f1da24eadb65689aa63cc3b3685b3803c278. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6Q2565589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd020360ebf5e9dc595469a6131c79eb47a2d48705835972d38fd92d51853db63. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6Q2565591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4de0ca60682c576be42bb781c3e4bd905e75b7a662c33279072f47c33f04a5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6Q2565592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e71c1e4299ac12b085ed3f7a4f264137fbaa7e95b6307b9b5d91d1bd7cb5547. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6Q2565593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd244218f39af0bd86d0fc04da21d21795c51f5a62703d8dc0830946d87a7500. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6Q2565594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6b0b66ac51caa113d817e5dfb57f7352a8e63e933df0ee09ba35d060d4924. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6Q2565595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5822512a922923e6e543c95dae4fba9692bf0653755d3ac3dba92382cfe0b631. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:09Z), 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/QZK6Q2567508.