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 0xd1802f0756cfa710b31cb1493bbfbe99504d180c10042be67b4ffa1308c0e68a. 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/fb65d7d5-c8fd-4015-8e64-d01927275c23.json and https://artists.proofprofile.net/proofs/artist/fb65d7d5-c8fd-4015-8e64-d01927275c23.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 0x22200253f6f5958d0be9938e0b23b9465b7ac67ad9353beec808a9cef9048259. 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/QZGLM2456099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a424a5b576d2403f3cf2f4da34a0363bbcc01649f559e9a1415fe11c264c235. 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/QZ5AB2448500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48853fe810009295ec283bab403066543325e6bbc52d8f3529bef8a4bdf8a2c5. 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/US7VG2492564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407dbd494735a939ed7b289e64f1f2c84f228a809828f24921a61fd538e54dac. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:17:29Z), 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/US7VG2443581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf15a60bd5d79135711776a400d8105a63d1f3fd975322e606a471de37aaead. 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/QZW9K2350222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9701ff240b6414926826a61894101a2572e6501e72e3c14f0a0ace78e06c701b. 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/SGB502457301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955b78a361669212487606c6e866bc562bffa1afa96e079404f27dbe29095858. 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/QZGLS2400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b78c65716c5e01891b803a8d163957b703544921cb9803c823f13a3cdbe5ae5. 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/GBRKQ2524709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751072c752ddbff5591554eec78add1001fc022e75ee89118a515791cd49aefc. 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/QZWV32470957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b037473516ea387902ed81d452655ef20a93fc1cd879c3fb6732d77147920. 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/QZWV32470974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf010e434ffffcc3b445ad9db47c494bfa95a6ff904847d57bcc828e14cf203e3. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZWV32470972.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68682cc23485b12213a3d56f8c99df1560bae3d9a4fc365f04e6e0f0f280fa8d. 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/QZMEP2400613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb1797fdd723ee07842f5dc1554343206de75caad83a9b6f739fd19dade999. 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/BX4IU2340667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e2036bd820f1845458bb1f3b8bebe13db0d4bc38866553b668d9846565a00e. 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/QZMEQ2360835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88a047d58cab81081568d593823e8bc6026be81f1bd5f5a6bc432a57332e95. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BX4IU2317550.
MTG EU TENHO QUE COMER MIL XERECA ESSE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da6e67eedd31019bc065d640624d09d62e2013241bf63cf6e5e774f69e8f61. 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/QZFZ62388649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea840619acd87c9db3518d53a3e79a895d60388786468019327cc3a5dd2b939. 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/US7VG2354447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe98699763c73a49bfae4fd93245d5ff67c07aa6f69d455738b1856222a6992e. 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/QZNJW2435104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62b6e18c8ffe9ab5d47d26df3abf0216c82c295566d7f1486885e659ebad10. 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/QZHN62374609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98f4359f9747e65f3dfcdc3a3e74bff20b359be5bff69cc303c54a90fa97dbe. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZW9K2268975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c25ac7d2dd46620071ea852edfe2ea6a501b61155a3c812e23f37c28408797. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTVM2294685.