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 0x1cdedfaeb7ab86f3116d8f24629cfea49fdfa9fabe59947c04a69bfe750eb50a. 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/212ed13b-f2dd-4f26-9695-eb9cc772c6e3.json and https://artists.proofprofile.net/proofs/artist/212ed13b-f2dd-4f26-9695-eb9cc772c6e3.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 0xc1e97aaddc4ecebe97de4563c69f5daf7fe84667c9ee782b4e39148cabb22ffd. 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/USKO12000456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31faef55d898d5d54a936b0b4a5b6210b161d20752bedea8e648d176ee2c74c. 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/USKO12000525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5374d37318f7237711f6227f3d3b6ebc7f102ad50884c19b8a910436540aec76. 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/USKO12000526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168007fb027fca7da00912abd523956f186f01e79c489ea5b212b9cc15583bb0. 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/USKO12000529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3905d2d97e2760a9c48509f6a9275ca740e5d632be009e12bb55dd22163cf111. 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/USKO12000473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe041fe233c17b36d77c2e6e8c2ed8636af6cd88ef2c778fa5b0c125cfd920e2. 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/USKO12000532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51241f0a6c707c47ae1435b7af6a62764964f626ddca5b8ab50b18b0e600f17d. 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/USKO12000533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fe6ce9974653951f6a39bab0729634049cc8bb9dc3a302d5fd85c314a39003. 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/CA5KR1807699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa069af86abc48e9f82f8eda66af688e62b9005488efc52f2523646bb1a1dafcd. 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/CA5KR1807700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8581951ac61491fd4fe243b9c735c833f1d0214846e7503c6b948fe10f39f7. 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/CA5KR1807701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4b1be0bbb53b9d5572ff1accc5f891de2ba0e4bab7ff9f9846c78cbd081c9. 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/CA5KR1807702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd8548488ed4727b9412e3b436b09dcee743e7948cee347a9cca6b1dcea9865. 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/CA5KR1807704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8252f0e5e7f9e170a3426cf4f75c5a277bcfbda886662e78161454fe4dbdf4. 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/CA5KR1807706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc7ae47a0c661927ca24c6481fa565793d92897e4d66f0f00ac983e035bde70. 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/CA5KR1807707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a0a5c5fde9242c1baae12f29293e551d1cbd3a266409e07b9987902760d283. 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/CA5KR1807708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418bec80c64619518ec26a035f675074837289626c996c49c66db72257ffae86. 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/CA5KR1807709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc26a690ee94d21c367232540c4a1b0ae94310a39f3088cc0e748b2912e1b3. 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/CA5KR1807710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff416d33b404224234c399914fee5cf7067835590eddd8efc826dee92989077. 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/CA5KR1807711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da5cabe7eb3a05badef053375633a99a5c31de949c2d98fa9c02317885be04. 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/USAE81402317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7916abc98220869f9edb1b2e66f8439c8e43d97b5b18e15ed783e0e0a53d4dad. 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/USAE81402318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863466e4dd2d0a8af4fd16839a10d0a22ca88c0b472c46ea90e79232552de92. 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/USAE81402319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa5c66763eb718a47f84630aa60d7f911b38675de1c3c726186e831764d509. 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/USAE81402320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7268421637c5ed473c513b4a52219718158c25193e595273a71c511d34021421. 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/USAE81402323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd960113d3fdd6128b63cc6c939d4172ba8f05edf39b53f716a2f7caee9c25e0d. 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/USAE81402330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18190558fc8d28a16e63b8220b67ae823e28e1d11fa667ce85a81fee12df1795. 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/QM24S2308738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1541e2c695f39cb8d46f634d4e6947c87f1c052fbc76851f9517be2fce0d7. 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/QMRSZ2100913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d75d7402084bc4baa89cfc6069c958bde1c8527b29aad063222cc8804739b6. 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/USKO11900427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdc64b7fb8e924a16a11b8150b3230ce16bb7eddfb44b3d912c8aaff82341f5. 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/QMRSZ2102953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f3966ac2e261969550361ae3bc52e104b995603cfedaf992086bbe3888a58. 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/TCABR1331902.
Go Live (feat. Chief Keef, Ball Out & Tadoe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110fc273e6c52db11262949f4235e10d2ac62135a1be1407e70007fab75dfcd. 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/USUYG1156964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d62b71fa42f5c1aade3c5d6255b652c24cb060360f900487cdefa4e1cc5fb32. 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/TCABR1331908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59483f1febe5df957b7fa70976165215226f2c9d7b44d65c2a349d06d037a4a. 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/TCABR1331806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f4a5f3359c73273c74caf81c056ed2baf3dbe07290b1ffcd4ef961fbd5cc30. 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/QMRSZ1802649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ca193f4226eb4cb7f2d33c5dc30ecdf9567dbd849f84b46aa36bf8b3fb927a. 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/QMRSZ1802653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447290a04d241b6e4542a6be63996b9190ab9faeb20093368c4387236fd62550. 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/USUYG1156969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372739f07e35d0198e8a1ca3529bbe29d0d8e66a05757503a7d2790922e94c98. 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/QMRSZ1802652.