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 0x0d0135f96eb8936dfd3d84fc4db8143e4d48bea84523629a9f20876a9be4dbc0. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4110fc4e-5f39-48fa-9ee1-d5b74cd60ba6.json and https://artists.proofprofile.net/proofs/artist/4110fc4e-5f39-48fa-9ee1-d5b74cd60ba6.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 0x6ae75a974e8ec5ee5451a6915fac88391911e128899c60f30deeff125c96cd48. 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/HKG732134476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc232468098f527f6ef21f65a4320eb9ed96c11efe04b5a46dd8bf3455157f2ed. 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/HKG732134477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f205fd48033ebfb3bbaf8224091e119c8eee2d48607f762f7cbd77cdedf85d4. 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/HKG732134478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65070622255ff4e5c92254c9cf6d832999b2a89ddbbf7ae9a56d06b5952345d9. 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/HKG732134479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd4de925ac91df516ab8e88fe59b821c6f5fd89236b6ec8c1a174ec11873ca. 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/HKG732134005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c776b924e718b55492d0e286e838aec72ab4fadff968a8fb07a57fe93050420. 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/HKG732134007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4568828f30e8ce8d1685ac19f1474396bc807abe6238503f8ed6c4d61f50715e. 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/HKG732134008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773de1de2ddc0ba1feb58de37cbd682066b07a5a7c2ef2fb6ed7264cede67027. 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/HKG732134009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cda8590695b96507a083f057513776d7026dd5a6167f11044b98fcc8c80473. 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/HKG732134012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114cebf8d5e62ff6a2bb2a2f18c41657b2bb0d36dc764486d30f8c054ab8e119. 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/HKG732134601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525028f8cb504f00f9d4e6e7914eedd71f624de4c73fc832352d73ff9af32916. 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/TWU710601018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233fed7b90fa49c1a0998a2d8d7abf27efe14b1ea6a7c716e4559eb2e128e69f. 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/TWDL72103662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2711af0c2e862cd8faf1f090977cad3735fd9ad47b87ce4482ef4f40eaf81a1e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732134439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a4e9764fe55684c083df05aba08260e30b936cbb5799ec746c279bcc8b77c1. 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/HKG732134651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058750dfda0210cf8bc590dbceb1fb195792d5755bf5d0b8b320e65a1707bf8. 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/HKG732134652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279616e6c998bd539ebb34b5bc60e9c81588eb2395308a2238f6aa113a5fe837. 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/HKG732134653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0f33afab9436bfa0d829c304634832c8680f83843b21e097faba1330546870. 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/HKG732134654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78d36959c410d6b9546c2f52c3543e68e615249378484d9064a30b8a84ffd5. 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/HKG732134658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff124cc391ce04b1f971b8876c5fdf4b6838f1f0866beb3a0b3a733c7f88373b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:54:20Z), 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/HKG732134659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14581e6f34c49f268b4f3ceeed286eef432b7c74604f2031280ed955398fcd40. 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/HKG732134660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe9153a81aad06a298ec9a60d64c3959218d34bdb3bcb0a23cc953df058004. 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/HKG732134073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203032a1495fe5af815befdeec645e8970b2838e613474e62619db228e7e86b2. 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/HKG732134075.
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