Tiffany Cobb (born March 16, 1976), known professionally as Blu Cantrell, is an American R&B singer. Cantrell rose to fame in 2001, with the release of her debut single, "Hit 'Em Up Style (Oops!)", w
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 0x41718f83fb4eabe7fc7c34078aa34e83b85781bb174fff163ab1ca39d253c30f. 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/b9d4bf49-3482-4b0a-8000-a36d1954af64.json and https://artists.proofprofile.net/proofs/artist/b9d4bf49-3482-4b0a-8000-a36d1954af64.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 0xd1a1b5b4e889112974b406a37f350b0387c8d4667e8c2c3156e2b66817fbc756. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAR10100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b7ee8fcee653ed34f37508018269719b088ab6f2eb3ba73df2f4b55260a768. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:10:56Z), 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/USAR10100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8091cbf342e744025af33ef7acb258a41357292e891117757c357543a646fe45. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAR10100368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462509e7c52c7f4dc21fab0551585c24417fa7274aa30f68b718b6c3d6356b3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:21Z), 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/USAR10100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeacbf720214a0daf65194333ad78d4eee000a42fb3ed1741d77c17d8b1f177. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:34:32Z), 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/USAR10100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ca8bca160fcc97cdadc5352b6d385b142aab6d4e1a91e7178e75f149c05ddc. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:04:56Z), 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/USAR10100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed248a43ee892bc8c245e2547e1c97fe01eadbd07650f04f20002453acc896. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USAR10100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc1ce2007b55d53e4bdc3578f02cfb85a2bfeb673fe77c068ceee3f2e8ffb0a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USAR10100366.
It's Killing Me (In My Mind) [From Bad Company: Music from the Motion Picture]
It's Killing Me (In My Mind) - From Bad Company: Music from the Motion Picture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1121d2f3c57b663fd0159019024d1122a2b1263a69b9e1e088ff93b724ae2d9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPYN2462382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45767517edf43c983d2cedad56190b1d0e7eb50efb03130b635768dc24cf8db1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USAR10201685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a639790c69845de4b19bf6de5f03c002a57670914cf64c01f967632926b422. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:08Z), 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/USAR10201686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7d5de2916085170280e8e7e60cecec27aa8d54e70f70f89a1ad0f7c5d592b5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:24Z), 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/USAR10201689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c658bdbd6e1c4fc10d58d2cecf3c019fa56533b0a8a23a990aa72e6165ef3c8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USAR10201693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188343501741f3801c13dd548241eec9d7a2bbe77e0851ce0f01d02c2a56492. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/USAR10200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45767517edf43c983d2cedad56190b1d0e7eb50efb03130b635768dc24cf8db1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USAR10201685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dda0e3bf1b730559ea16ba57faf152f06dc4ad92a9bd63b22d0c071f7746ef. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USAR10201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7d5de2916085170280e8e7e60cecec27aa8d54e70f70f89a1ad0f7c5d592b5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USAR10201689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621b338d89440ff90b4a3b816fbf858240a94ff60e1a882573ebff6dae89dc66. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAR10201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3bc465ab2e61cd3ff191e8d68107942045614813abc3742c8cc4fcebd1b5f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USAR10201691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ee99bf09fd594ebf10e414ee50f39838a0b294ddc09d7c8ca2f7e912238a45. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/USAR10100369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c658bdbd6e1c4fc10d58d2cecf3c019fa56533b0a8a23a990aa72e6165ef3c8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAR10201693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188343501741f3801c13dd548241eec9d7a2bbe77e0851ce0f01d02c2a56492. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USAR10200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac2aa593f2cc9013d22f67872d15fb3179ec5fd842dc89edc2699a72cffd7d0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM4TW2370408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52203b50687235a3160ed181ffda9003f7dd04a55e7db866124064e6034137fe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4TW2370410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99512646132d170f49dc5d4ca48f069e3bb92fa64dfe08c9db5349e6262f064b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZQAY2382292.
Hit 'Em Up Style (Oops!) - Trackmasters Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b7195978a735e20a71cf81cc49ada1a77cf1c86eda28a9163cabf384c90d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPYN2461559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924b5175a323f38c30a0f178b1d2e19e8b5391e1deab5fe03e4e16985c1bf45b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZQAY2360285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ebb0fda92aeb47d3a84c02d0be63ce73267ecb2974ff765e6df1fa96d89c58. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABJ1268396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602cd96b86ed8ba11a3770ebf54fbd50dd3491303877d6b153b6b46b2f112da7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPYN2384648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987109fca9856ed7ac2dda95722cb3347020c81e7b666ce9cd432edaf88af55. 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/USAR10201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9c380ad9db26d6c32d0812303b1864eb78f6cfe753ac13689b38b28baf069. 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/USA2P1696688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987109fca9856ed7ac2dda95722cb3347020c81e7b666ce9cd432edaf88af55. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USAR10201522.
R&B - 100 Hits - The Greatest R n B album - 100 R & B Classics featuring Usher, Pitbull and Justin Timberlake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05de579cb1623a969e60651b3be03d204572f4cadf41eac17bfdc36f85518. 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/USAR10100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987109fca9856ed7ac2dda95722cb3347020c81e7b666ce9cd432edaf88af55. 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/USAR10201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987109fca9856ed7ac2dda95722cb3347020c81e7b666ce9cd432edaf88af55. 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/USAR10201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db2c1452ba0c3f175dd4774ac4cc635d9e54cf51b549ceeb89e672307b671e. 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/USAR10100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a30bb660bc452ccac8c60a59f2091ec14ec8c9eac172236e3aa77ce4aecfe53. 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/USAR10100443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987109fca9856ed7ac2dda95722cb3347020c81e7b666ce9cd432edaf88af55. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USAR10201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05de579cb1623a969e60651b3be03d204572f4cadf41eac17bfdc36f85518. 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/USAR10100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db2c1452ba0c3f175dd4774ac4cc635d9e54cf51b549ceeb89e672307b671e. 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/USAR10100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05de579cb1623a969e60651b3be03d204572f4cadf41eac17bfdc36f85518. 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/USAR10100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05de579cb1623a969e60651b3be03d204572f4cadf41eac17bfdc36f85518. 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/USAR10100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db2c1452ba0c3f175dd4774ac4cc635d9e54cf51b549ceeb89e672307b671e. 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/USAR10100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692906870f631a32f6f58aec5b2ca6d1e691d80ca6b8afd9556aff98c986300. 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/FR8GV1841900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410da1244781b0e906f11156f2be357a96d556b7242b7d94995ce262f1a30cd9. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/FR8GV2214630.
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