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 0xbe855502e6fc72752164025f13230908a87c363e600b53ce9a6c5128b82025cf. 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/cd5f2e94-f68e-41f8-a3a8-bef99fb3af6e.json and https://artists.proofprofile.net/proofs/artist/cd5f2e94-f68e-41f8-a3a8-bef99fb3af6e.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 0x7c55878800a9ffc1c5d9c8202274ebd1a7f39bbcf1e08a82d2085ab73aaa290e. 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/MXF331111428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1927a39e6ec78b1daac8d55abcf9841ac05a39b1bd3987908716f38fe794b684. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXF331111426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59391f354ffe18b5f1040b637f2915c02d9f8e5b07f8a234626e1d938518b9be. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:20Z), 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/USA371361917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a3baa14719a7c5bea55538b384a3db3a2121db307b68f4ae329c32cc93ac4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA371361933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3016d344381561e22b9b7b112ea189ec022760639321ebae1ea18675f98e78. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:45Z), 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/USA371361940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20f82609c7b046b32f5b812b36cc0cd294527598f5d46eebb6bf58d186aaaa5. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:20Z), 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/USA371361945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5867fb5751c0ee1d5e8deaceed92118db2fbd060cd59f47879919065912e9c2e. 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/USA371361946.
La Distancia Es Como el Viento - La Lontananza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f40302e4edfaa121495d01e2a8c247cc360833a097904b4171f0bb02da9a29e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXF149300316.
Que Grande Es Tu Amor - How Deep Is Your Love
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24178d5bdbb08a0b29eb3120b70ba4a2b83eebfef0f973948822df9f54729f17. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/MXF149300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa23fd6dea1b3468beb1b0b939eb7da6d1ce299cf44d878aeebc78f357a3995. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/MXF061300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52acadb91623bfaec1d543d706fe66e699c88fd3ea162ae295957a66acaa473f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF061300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0103f8d27c86649e0c71674d2266a6ed62c0873f997b0376af855b1e00c923. 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/MXF061300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9046d2b813dd1756155b5c12367681884b8735f6e338a430436c930ab4b6a84. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:49Z), 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/MXF061300050.
Hotel de los Corazones Rotos (Heartbreak Hotel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd108ca27bcddd40e7cbc99799ef96848c7f9de1bd7b55dd5d3d700b199e943f9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MXF018900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ada66def4ba0a94753e2860c9eddfba65b5ec40a0d86d0895921a511c81c45. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:56:04Z), 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/MXF017900684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223f991e2d83d02358c8e17f6a48565aaf23faad0962e426a5004f028abeeae. 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/QMFME2181854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24318cb11fbe43a948bc9e2550912631e2a50fe76d0545662636fea62cc65500. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QMFME2181859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953fef221b235ed702ea0b1d971570dd54e6f6873dfcf52f38b1609a2ad6ac28. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMFME2181860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ababa8125a426b23363bff43dadc25789e58f44ac89ee4631b5da5bb1f53c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMFME2181864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef9d7844e72fba79dc89165db7a113072ef0b29dfb7b2dcfda3b57068c569d1. 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/QMFME2181865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c7d02d2bb26d587b99c65d30de943ffe42e399bba22c547cbbb67beac65367. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME2181866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223f991e2d83d02358c8e17f6a48565aaf23faad0962e426a5004f028abeeae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:08:16Z), 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/QMFME2181854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24318cb11fbe43a948bc9e2550912631e2a50fe76d0545662636fea62cc65500. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:29Z), 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/QMFME2181859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953fef221b235ed702ea0b1d971570dd54e6f6873dfcf52f38b1609a2ad6ac28. 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/QMFME2181860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d55511decde2a68c085761d8cc531f1473b95a9635b9d895627ff74d825fce. 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/QMFME2181863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ababa8125a426b23363bff43dadc25789e58f44ac89ee4631b5da5bb1f53c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFME2181864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef9d7844e72fba79dc89165db7a113072ef0b29dfb7b2dcfda3b57068c569d1. 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/QMFME2181865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c7d02d2bb26d587b99c65d30de943ffe42e399bba22c547cbbb67beac65367. 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/QMFME2181866.
Te Llevo Bajo Mi Piel (I've Got You Under My Skin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcccc5104f3eb32019e14f66b59af3531f9bff7684165db123ee0f9010d2dad. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF149800115.
Extraños en la Noche (Strangers in the Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c99d1cfbfbbefab24d32dc5b43d796bc9e873363e6f149c9723d5ee5fed02d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF149800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a176baef8a977dc5f0db479c08aadea5e5f8aa8d2a56a86235b0b5723d84d7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/MXF149800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f971404c360ca96b11ce0da99cdf40c98fee4c209077d593d239e83bcbef4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QM4TX1716804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f971404c360ca96b11ce0da99cdf40c98fee4c209077d593d239e83bcbef4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:59:24Z), 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/QM4TX1716804.
Jornada Sentimental (Sentimental Journey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80113c462a2badd11be4bf0cf5fa7cd5f7d79de6a45f136c4a72693dd1132ff6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXF019701218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b46913d3543bea1370d7431057835def1dea3459843e4cdeaede382a7bf6c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:04Z), 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/MXF019200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85750a7d143f5fa26fba2a847b4ca48cfb2c85d05ce30b7067ebda342d2a7d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/MXF016600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ae56d0a405839f8e1d1ae43050a80985060f5687e15ff6eed6ca2a5e5cc18. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:48Z), 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/MXF016700361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5879a76d5115fe8c8ed64086cb868dc02a234fd821316d2a66b6f0d85541b13. 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/MXF016500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a9213a80e212cc9e557c7cdaa692ead4f30d56d0c1f64d12618c8d8abf11fa. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/MXF018100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4aef8951f54826ef651eb58016c0ae60b87463c021ea16b4e89b17c309a0f5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF016300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6cb9e1532b7b3dba5120659b7b93678135b613ce63b0551ef86c60d2b01816. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:43Z), 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/MXF016300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091a42f9b1ef9ec46e2d025e68e992e47e7a8720a9a02d1259ba94a532f65658. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:09Z), 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/MXF016300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b66f41c05b5f5d272b4de9eb2dac0b4d26c8553f9d43939dab71869beeaa5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF016600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd108ca27bcddd40e7cbc99799ef96848c7f9de1bd7b55dd5d3d700b199e943f9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/MXF018900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17825ad9d2d58a5ce0369a050e530b01939619b71d50b6dba1ba350f89c922e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF019600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d83581d7b9c489d140b7397f94e160b26ee1c4da13cc655d1df2e3ba478d6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM4TX1716828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14d571576bac1abd4c0866eab29050697fb1895d4959679820d079f6c5967b. 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/PL06V2315596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83c128072595e511aaec11e21166e82c1d7a23c9d71d63d66d026bc1d7b07b. 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/QM4TW1571404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2d402bb36f754d2128099bff3f24947044061090ebe587d8641b9b45944fc8. 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/QM4TW1571432.
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