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 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 0x6c9b41d52215b6a0c2a927aad46f8fc19a542ce263238fae9244bc0f3d6990c4. 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/571bb6a9-2227-4e89-86ec-e5f1bd1c0ec6.json and https://artists.proofprofile.net/proofs/artist/571bb6a9-2227-4e89-86ec-e5f1bd1c0ec6.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 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 0x3b150a2898c1bee325c9a786723dfde2c3298e536828eb57e8a419b6922e82bb. 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/QZDA62487586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c5ac836ca207fef8e9aceb01d1ea6ee6c9250e84812e2e4909f4e21bc7b263. 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/QZDA62487588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b02776a80dfdd4b47dd7feb522632b179d2b1149e1aa6aa33a3b402bec05a. 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/QZDA62487589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406bb2a4bfeb95896c53da5e1bb40f7003312366779d826faa22c800f6cbf29e. 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/QZDA62487590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60be6c601fc70f6ed7ac20a4484078a69840fb0e5dd1b0b5ebaeb788a709a04. 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/QZDA62487591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b873b52c10f4afbcdbe82533a2c78924ba3508aae3253f9da282ebffc55d0b6. 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/QZDA62487592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839bb7e0e1390a613edc87d9369b9b71e01997555c8dd4e967fb67e84b794f0. 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/QZDA62487593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a2e4c82d4603540522b6971aea6178380b3104d03cc4e0bb385cc0118fa976. 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/QZDA62487594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eabe241a6207e3de2b462a5622b8580994b4fcc96d8f58b17a0a7d8dd61624d. 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/QZDA62487595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35a8ec2d1472da8631d3b82525d581d7c231aa1eed9aa14ec2c0a2aeb3409cd. 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/QZDA82362661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d45619d5535bdd4fcd09f09d5c212b86f0b3beb9c7344c2aff686d4139906. 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/QZDA82362662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215101dad0761367f3c4d5fa81a26715d5f38cf1f726d5b8320bf1958601eecf. 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/QZDA82362663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c62cec9ca0ca265103549137861435aa46b0cc21ee3107af439760ff679602. 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/QZDA82362664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd05fa9afa1f514f666a79c74efabae14802b878fcbd2f7941aa76c61263b3. 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/QZDA82362665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d64b7ec3473da23430cb6bc0a2299687592679d28fb20e516e273849b531e. 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/QZDA82362666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2679de580cda2a6dc6dac40fa8fef6a407ee78aba83302786311b93e1664bb8e. 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/QZDA82362667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1789f5fa89ae89ccee61fad18f2729cf718ab12b20c1aa39683f35509ecf17. 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/QZDA82362668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3e64d4f1ed3ee0733d43b35d5f8cd7a73aa4d5c49a72a67162509c6bbd5cec. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZNWY2175702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e91638a51f4f185beb86704e7079bf772e9821ea4d10efa373a56244373349. 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/QZNWY2175703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cd5ab0f924ded421550d721dc2bc756f993e8eac3feaf1e12204d5efc40a5a. 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/QZNWY2175704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c9d44123e94d6203648532c51b41338acfe230ce0c87e110eda6ce8bb739cb. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZNWY2175705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3b97e130db72408287ef082a8b46ff4fff835fd4fe6ae1de67527a07594fe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZNWY2175706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97115a7d436878b9c6eb3c341b81fe2d7ff2156aa95c226a083fcd1d62dd8717. 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/QZNWY2175708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebdf1f2b074f6def0cdad4d0e2b6830fd68c0227e071273f8b7c071c3c7824c. 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/QZNWY2175709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c9ae8e9a230dd7700c121597cc4d221eb627588040efdf8965054a9c7588a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWY2175710.
I Will Never Let You Down (Rita Ora Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30817575c8fd010353cc11c3418ec24d1e706cc1f03e0c3f0c2f360a510a5ba. 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/QZNWZ2103584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc1ef9532c935e0716f29e3092afdcd2007425c13a5bf2629abf1311552bbf. 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/QZNWZ2103585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9210fcc81b69790231292b225c21a5c65cb742b99b1e5976f6b738bea9e03a. 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/QZNWZ2103586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01600e2c463607b2a61facf50006aae03f25de81a6dfda15dcac99c34621a04d. 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/QZNWZ2103587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aeef03a17020a6b25ab3e2dbf4c1600549bea78751fc3dfb8f4042fa910eb4. 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/QZNWZ2103588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838b231231495639691e31841a80a2053b415f6d6ab9d090a2cb7b5f64a2359. 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/QZNWZ2103589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf896fe41abf09b6ed30501a9943ecf60f9c13a0f13cfc5dcb231d6baa4572887. 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/QZNWZ2103590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d42e8748f8ad97fe3fae313d5858d95a63982e2fdf82a1defa8c4d1712aaf7. 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/QZNWZ2103591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ebdfcee50b0d94c6b56d1bf34c0e8055e27ea71a0c4c9ea52f5973ecd0628d. 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/QZNWZ2103592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbb92d4d6d308a4da635eb39063e5be1cb2ac517c9dc05e381326d5c835ded6. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZMHP2018745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deb2f2d5e135407672d559984b43196787875e2edc7f52180a81101ceff76e3. 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/QZDA72302418.