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 0x030e35917d1cf2173d92c1b7933be4cac90032845f6180b1ba43689c7c72f48d. 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/25e1df70-7b53-4e3f-9f01-069201132ef7.json and https://artists.proofprofile.net/proofs/artist/25e1df70-7b53-4e3f-9f01-069201132ef7.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 0x46fe5c935dab2f566a8ddd6a8ae738d980147231ab18d6391776663cd3e21320. 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/QM42K2178003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11665d90a77e7de8495dd9c83dc1cbb27b84a836856f675717676db10a4d5e25. 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/QZFZ32360319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe52b7857cb7dbd8cc9e3c05cb3d9327f3c1b94d2afeeff690486bed412277d. 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/QZK6H2020189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0d744c30835fecccc8e697326ff08c3dc720fbee20965df8e8a5b7b5be2262. 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/QZFZ72077668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8640c273f76e455a67f7f01de9d004add917363e90491358275cbaef013e6118. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZS642228203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545fc5844c29c4e79b291115e65cfcda6f3183867ca214e38789905698833a7a. 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/QZES92052893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2e1bbd6e4fd96db3bd04f2f55bb11ebddfff88c9e9c9c1361020ffe079470a. 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/QZNWZ2039214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa752adff53a901491bbc4967017281cf221aa3ef8c90f3adae1ab1a652b2d65e. 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/QZK6Q2019902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8160061b7b69e69f1bef20c477778525fdc288c9e1d50f64baaa768324c5b7. 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/QZK6L2023843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d95d26239df70b4d2ee21243f3963e9b300a1e173b3a7da04ce8150deef39. 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/QZNWU2099697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a3ad01b924f0840bb90c793a68729b011b073174945160fd745deeb6c1f537. 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/QZNWY2164695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d92c9bfa9232aa4cb8a68e359db335d9599c92f902eab4ee240a66d09e9978. 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/QZFZ32360320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3cb841778ebd0fa2c278831aec0d98da0765e21721fbb5e014ef09793edb08. 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/QZFZ32360321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aecccf0ccd618d32ebe6039273bfb69884101273d8c4619be00bf89c0bcf5f9. 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/QZNWT2040371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32682053289afebf89f9801dd007014923263851b16b523ef7ff11aac4796a. 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/QZFZ52107653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a1ee8402231c798d5e90cddce1fdcbc2b5a0afba7d6eeba1a0f4649bbe269. 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/QZHN52105384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056fb7569a94939301ebc04b938f4f118b97b93242d5c94642c661dbaa7de0a2. 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/QZFZ32360322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7511bc85ca62c81bb2a7b049b3dfd73cca2293781daa20e08ed67ce3313db1. 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/QZK6K2278190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0ff6425c9dc0b85e90b0d863c198abe3488f95bb7d2ef1df841a369838bf0a. 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/QZES92072985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0839232c7469934fd2e146d13d76a5aa5683d6b21353143bfba124387d8bf2da. 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/QZFYZ2189194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2da62d501558ff731d13f305fcc8a2b6fb0c4116a082fb8fdd11ad3c79a13f. 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/QZFYZ2189195.
I’m Fine with Dying - blackwinterwells Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cfd93653362c4972d41a74bfa04a8c364ab0c6d9dd0a757576638de2b6f529. 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/US5662322806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83bce31da6872bb54384d715741ee0c30229d156ddeb3bc691ae91eb66845ca. 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/QM42K2041760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c2f971146915bfb24fad38c08b274817e00e7af2bd0db30a678b39d10f165c. 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/QM4TX2175787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a7893811f0d28428027f7365da0216e6d15047e81da4469d4135d80e0f5e23. 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/QZK6H2077554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a7893811f0d28428027f7365da0216e6d15047e81da4469d4135d80e0f5e23. 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/QZK6H2077554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedd5228d7ea775a8f2107681b7aded95d1603d34b3f817d7de5420970e90c32. 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/QZHNB2228462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669f393f89a1cceaf6f41568818f4d7d739849bc257919e3cc44b61d9a57e8b. 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/QZES62151603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5135ac2f52ce0d2047089de1848951900c332149b52031db8e92000a5738e8. 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/QM42K2152717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512163becb1df62882411b7e146b62a28c14f6f95825128c8abe4eb541b160a2. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZNWX2289642.
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