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 0xfa1939b743d079d972af15e01b2c2aacf66d727fd7c1f8a957f5ab47ca7909c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2ca0de8-3c70-4cc2-9c1b-15609a1a0126.json and https://artists.proofprofile.net/proofs/artist/d2ca0de8-3c70-4cc2-9c1b-15609a1a0126.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 0x03710f2e5d4ed681818a3572b3658313f20e1a3c6026987790be0ddabc4c93b0. 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/ES6101900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41a3d7aa76cc7ad8ebfd5ecb13d9fa1bb5b676ba4640c1789114ceca34d399c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:35Z), 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/ES6101900626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b223ef037af10a520ac43917d8a1b1235198159ee5b6a3e1ab6d01ef34435. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES6101900628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203e081f5affa88745bd9349f50ba485f6edb80d1579f1e2daf1346f32442ebf. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:45Z), 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/ES6101900632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a21da9c391b3c6b50820d61b9230e2167ef9c33bb0eb0c3a656b3da5264fe96. 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/ES6101900567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed5731d9d5247b63f9b33b0134f6bd9de56cc8ec0ae722185e28e23568b8d29. 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/QMDA62177229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaff4b5c926b022eb6b10185d2c22bead5c56419b78a2eedafd549d03a6c5425. 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/QMDA72168825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4521c3298de674be1d7644599829e2da960a166cbc551f1b6ff25d960cb14ae3. 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/QMDA72168826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aece36879466fe2abc9d2c028256f940967ca5e3835318e8aace8a85664a41d. 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/QMDA72168827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e506b367fd1b5cf763db29c45aa489ba322fd47b6243d812eabd7052e050a1. 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/QMDA72168828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4611feb187f7d5c5a55ed171e150383577f31eb7cecbf9a26480c53b536a0c5. 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/QMDA72168829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e89b4ad0cc0369c9ca515cc799d5cb2897a631f1a768fff0a07a1039c77331. 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/QMDA72168830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c895bbe7919d65b6ac13362855a09a3849497aa9029a1eb0b0713aca78c1195. 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/QMDA72168831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67841e431b46460a34b8f7886109df3a525679f7698398952da08c8fab944a59. 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/QMDA72168832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03e8802d647689255d3f8a8aea0bf0227aa10f95d1ce28e57f56f35eeab19c. 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/QMDA72168833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e330ef6daa43b0bd506f132a95ff22e2373345ede07d1722865b800d58ea49. 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/QMDA72168834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7228edf3b281e8e1dd6f3284f0724f5154d412731409bfd2526266ea3be2671. 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/QMDA72168835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c613874fdd54f0d20f77353cc8aa240926cb6dad4a13571fb18e9e8b7f014. 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/QMDA72168836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0597351a25c6920c5c57381280ea731598eeede18b0fbd615c0bdb321bcdfc. 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/QMDA72168837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ff162b92ecb7c4093798c848d2d66acf75fa6333b0bccabded32fa6a136921. 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/QMDA72168838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b956afa300ab456b9086bf6f3af0406820db26b59bd85e7cf4a829101b2246. 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/QMDA72168839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205cb11d04d2008ea6fd34f6e513941224d33739372eb867d1a60de6bb2f772. 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/QMDA72168840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7782463520b6a5c43db8b84590a056f94c7de3a3bb15433b004a7bdeb97176b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BK4DA2454790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5aa06906c78faa75547938fafb1b8a46b93e1a647837922ff9dc37d45f90f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BK4DA2454796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92595cfbfe21d92c278f377af9ffcff7e5b88888fc52ffd9020462877e66fdf5. 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/BK4DA2454797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e42d0a504a31d527f8e1fd35da5a148081e5e66b57a3b12134397c0a0c50a5. 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/BK4DA2454745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e227dda26e62d58414cad62d96fc57038c769653cc85172a270e8cb46962506. 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/BK4DA2454791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4db565a9386f7154ad3fc4a15a0ee4a93b7ac5a7a8e1ec639e338f9c09b7213. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:47Z), 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/BK4DA2454792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe559f5ce07e4c153b7f9eaade27e38d47cc80470c1ec69d988c2b8f2a6b4d53a. 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/BK4DA2454793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6744c9c3ea7032d6fecfcbf256c6724bb82d00384b9525091966d55313291e9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BK4DA2454794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1546d0225838b99d5c6b1d707ed97425d013d3cc3f48087d92c8acba34b5b52. 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/BK4DA2454801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f1353d494e3fd7384eb9a23a2fae958b177cc847595989bb0feb824b503c6. 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/ES71G1841572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d8706d935945b2934ae9e80e8906c2f55498043ac984119b098bef3084cc5. 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/ES71G1841579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b452b495e9c828338a5c124f89f217230300ac202969bc68389348be3f2c2. 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/ESA011800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9731488b069c20d77f3f0eec51de25eccc8cea5e1fdb9072203775efe9a27b46. 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/ESA011800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95b566b10bb5190aa882063f7e7c4623d5cba4790db18a2d8094f4d3a387104. 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/ESA011800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823ca2d3a90333150996a017f75d61928a3b11c423b4ce94fa6de2fe90e213bb. 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/ESA011800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d17bd5618f373a3da959f79a92545f6249ece77b8b73c2d50ab8335580062. 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/ESA011800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659378143857024a24489ef7e1412684f9ef814695f4eecb220d4dbff067e6d8. 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/ESA011800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890afa727626068af31841bca9934b38d91509ce603f5cf0bcb165ef7e2fa42f. 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/ESA011800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c8bccdf28342f1267a08ed87cfae307b536a136854fa08a21b1f85a48a5138. 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/ESA011800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4edc55d560781162720d98dc48d36a2185b9c4d4de6b0d8b59ec635cd394f95. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ESA011800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a178bc72f6227bbc79ad6d91a96e44c7d5066c8e07000c75584b45f11b6033e. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ESA011800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4830746259f7108b0bc31cca44f54e76d65b38004c0475224da7a38e38687c0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:22:36Z), 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/ESA011800086.
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 0x369026e9b6b6138fe9179ec8f4685d66607d60ea2ca539d30d9f75a4bd48190d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:19Z), 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/ESA011800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc584e85cecbbe5f05ec4b865fd27fcb5b52bf0f1d953d7daa286d4c64c61363a. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ESA011800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd601cac7c8f212f2d879154aac1d09d4008ae61c3910626acd3d95cf7aa2ed. 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/ESA011800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837386396571f53166ae63ac2acb0d7c133bfd87fb4d3343e736cccf71a530d0. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/ESA011800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a44e21b71ccb6d8a4b3cdef77ec4b27559524fb9aa5b41f0732dca9df465c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES71G1867382.