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 0x0966352417ace0b133a659ff08fcc07657281f150f92e436edc6f9e047c8a2c7. 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/ade1ed10-3ff8-4936-af77-69590e7ed680.json and https://artists.proofprofile.net/proofs/artist/ade1ed10-3ff8-4936-af77-69590e7ed680.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 0x500f2fd8548c92b8806f01cffafffd5e201f74beadef2fc11ba41de3c9905ba0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q52100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fdf27ae4ec5f984859fc7a9aad7954f8069d1bd59dc22273225a8fc3df6b75. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE5Q52200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94080ececbe1f9b3c773ce3a7b9a027be4f916fe6a7c9cf3b594122c4429da95. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SE5Q52202774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e4f57481c63d838c489649a9e41318e3310b2639bad418b26523ac370c3f8. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE5Q52204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03c70064665ffc73851f07317f6bdedf6eaf076940e1b583fd93378bb1164b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE5Q52204102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d9ab45447f4faad988126e1e56b6faf27a054671eb6cc6b6d08463fc438c0e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q52300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94256eb3d03682333d17b29808b4e4cd0a7553217829540daffa26a000ef0ba9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SE5Q52300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3592637cf8cf9a1ef38d04bbfb460cea790d54fbbc3cd48da652abd96a4cd00d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE5Q52302094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7c84a53a3f5c01fbf8e7ef9d202b72537cc611b486ed3d6b101fed56f501d2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SE5Q52303319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c13a622c68ff458259c8c21a6db0d7a6c1a460fb37a65fba8d8f18d5d92e7b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5Q52400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f3de406466d2d24ec07fbeeb02b8262de473e10881d85d0bbef32760006284. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5Q52401553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f180198431d7e39d966442a22aaa34b0f5cba3335134386b7912a885be3047. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5Q52402720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6587199875c8cb226b5dd86648997a802871421d62b6f09fd47342cdff2d3d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q52500346.