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 0x33c2cdf68384a7874ec67143da894810f39365cfb6101a6c21d3ba1d9f6e3594. 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/d892a52c-28d0-4779-bb06-1bb9c9445e2b.json and https://artists.proofprofile.net/proofs/artist/d892a52c-28d0-4779-bb06-1bb9c9445e2b.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 0xebc1dbe64696358829bc83b112b7736484fdf287e92cd1ee77a4d3f5d5a3df82. 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/NL9KQ2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dd54f2d9bb0d2da6c2094c7e0ea4edb81448ac975c42aa9776d41b1093c392. 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/QZMHP2324748.
Nicky Romero presents Protocol Miami 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d1c60a2f58f5b96dd405c3db3c7ab7e01f0b6d8801b5f8bcab913fa597e88. 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/NLUW21700511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bcfac84dfdef5634366b8f2c75d6212b6f72171bbd7bcf2d0ddb9b310b74d5. 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/NLUW21700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c076cdfdbc245ea625cd7d4c4e8402165ea707a07cf9aaa5c3c848ea7c74527. 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/NLUW21700527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd81f7fa43df2ef4876a00df32ea9537ae90c5bb2ceb9561273b97f2146a5def. 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/NLUW21700513.
I Need U (Mix Cut) - Tom Tyger Miami Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07804e96ea5ba70abd0521689341839bbbc1078138a23eecd15d92d293d8487f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLUW21700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba36ea73f657369bff886904513ee254defa145d65e6191d9b55ee39ca88bf43. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLUW21700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb44cfc19c1a0878c6d851174326052ab122e3cb6e38ba1893fab2b567097690. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLUW21700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb637bf6aeab78f1b9abd0e540d37aeb60c386b566bc189d6967f5b8082d3803. 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/NLUW21700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb192b13dc116c11490a1c00702ca55a6b2ddd88d56a9c2110c9ee17636ad8e. 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/NLUW21700530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507ea07a89defacf37c2c864d3097bd70b791f3831a96fb2f5746385a66f790. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLUW21700515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa135a8d70b9b531f5f13abc0516a058a0d84a72b48d6b739c282e0ee762ae5ff. 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/NLUW21600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b6a3159a422fb7a04e8fc31a1c0b5bb0658d88b8917c2ac7069308d25ee142. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLUW21700516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d7d9b61f31a4f1a42f1a1e09e2ba5b6f785674fe43e5b48acfc5a6c5184005. 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/NLUW21700534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281862264e62d40b0124089b8a06d914b283821c126cd921881b1f550381ee8a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLUW21700517.
Miss Out (ft. Max Landry) (Mix Cut) - Nicky Romero Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47383cd698aa8eae62435586d3a956a4d2be0c4b108e5a46401bbc9d52b4ad. 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/NLUW21700535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666bd5f7745c83d420d7426d375cfc70ba30b441f86528b3dca6c65a4f990a2a. 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/NLUW21700518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40157a55fefb2b00e9685288d61f806e619245ff09f25228005c42079ace7def. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLUW21700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c5a4c7cb95e8ec84b859b26bba7685655a696c5f0753da00861e5eee13a8b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLUW21700538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77a548c023a482246d0a035ee68bd4b443baf171a342b03315de47f7514ba9e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLUW21700520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee2df415182caff4506fc64b301970a8ebffe4c3fedadac01d2cf08a2dddc47. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLUW21700521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81453bed28d36a050b91167a244fceb8b35841981956f8f2dba63ebd050d69cd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLUW21700540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79dd21e0ab21876ce72e38cb721edb0261f2b18989f1f559327189e142c1b3b. 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/NLUW21600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f5f4cac88f9d0440ddc4ac0b92c8a96e9041df6a6de9b3ab92847c56d86b6e. 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/NLUW21700522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd2ad4c41ca0a5ee5f7983382f04c9d1ee335e7676a41df472a66cfd04305dc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLUW21700523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd316e85f95552075511f360bcc699414ca728d1590a625facbabd9f7a53a1ba5. 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/NLUW21700544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953157462e261d58df450f0cbc9dd91457343a4792aec51627f57a149852ce3a. 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/NLUW21700524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5fa0a0b8768faab0ddff783133d2bd9187b760c66492343d89a00a3b046ccf. 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/QZWDD2483258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26def04fa9572e8edbcd16478251401711786f57530d85237627495eb5839524. 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/QM42K2343670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f6fbb8aae10c1346e7448123bd7dd185953912a324d20018649b58a8e026ec. 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/QZS652387033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4caaf86e79d839a6e3fe8bd0352e62b5dd427c52bc0288f0f3b79b195f7aecf. 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/QZS662209361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577dda851709ebe930f448fefa7121d2d5375e064570394f35401d62bae9fa34. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBSMU2478996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97df4a1e9d74779293f98e4eeff4e3a0c99bf859a79bcd786b29686fc113efd2. 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/GBSMU4407450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00896f9fce3b0e6c331c7ab734b8f1633297b2ffec01db7309dd1973737c0be8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBSMU4407486.