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 0x0aaecf1059e22a009d23f29a84ebbfbd074aad7bd4b47247e4e3e2295cd1b0f2. 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/be7ba95b-9e16-45a2-932e-bbe83b033c83.json and https://artists.proofprofile.net/proofs/artist/be7ba95b-9e16-45a2-932e-bbe83b033c83.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 0xf9bc091356bb9babde231d567bf59c66ff99a2ab6e643e5585e62173c256f925. 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/GX3Q92469592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e45d39ebc13247def82a7775317974a94b3ba20022eb68f99595dbf524da8. 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/NO2DY2300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f81a99b2a80b41c5a25c2fa7342b16a2cab8158307d4c5e6d8fa51f383dc811. 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/QZNWW2484767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec9dd033cdfe1df46cd3d0acb108f9ad7b45b8ed0a8699b4c10082ab70a1821. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6K2410223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e30fb8bfabb2933f5b14562bc53896beb908b008c365bbae46f5cdc7a610ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFM2375209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66002c39e25c00475eb630ccde133158f1d67dccba2dc6352ea6d29a0d60e4f2. 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/QZWFG2352978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e13b46932ce67e50e2c94a5c3a662cf57bfce333c0f875c0f75e435f25115. 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/QZNWX2322152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f5e389092eee90c571c8c830ead1c92cb5a03bcacd1d93e48370a832116102. 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/QZMER2397610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c53db32323091e0df3a023bc793ccb223084ef19a2704a0151420f896bfd36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6Q2360370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003fd1403780a0ae2aafe57ff53eadc9ffe3d6722306f1aa52c6601a75ae2f0b. 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/QZHNA2362955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7589d9f91b56b264cc9f227bfa535612f8fa101d6108f2b775a26f3167794. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES92343279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2f642700f273d37b6d8336e23fd31d95b32c42e9e6ccb2dba9464a2a8fd343. 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/NOX8G2400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c38c0b05c8cb00036757a696a12d324c6564ee3be4161e6c66f6464ddcc00e. 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/NOX8G2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb9a72bc43bb9aad591f4a69aac10536a28b3673def7293695ab57bfd2a9fe1. 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/USA2P2508488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be95c5db03554160063850d80bd053451d4801f9f038fca5eb1661462a0227e. 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/QZHN32517678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec1895bc0508d664ceab5e98a262fdc73199f1be416abed8f3bba4ec20c6e37. 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/QZFZ62523120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55df25e112b81a370c3d8d6a87d9261413ac5f133052779bce5e5dd1d9229b9. 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/USA2P2501568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb447fec52c4e954a30806176c592a568702fc04a4aef1b93927eb945e911b99a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2501979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44358aff0c2f5713168db4116059fd25c38f526f00dca7e3bb11b20c95251c9. 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/US38Y2500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfad5b50d745f8d53ca9545356f4e1cec46fb6d8e615f458e2010a8263ca8b0. 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/TCAJC2476319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4d5535e6cc155aa11386d13cfa053770fb29c136ba36cf2e737a9e86a4663d. 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/NOX8G2400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87855cd805c4c5aea079b88c37599600472129ac4b092d57ec34c83705f440d1. 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/USA2P2474200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a74cbe4caeca41f249171c1406977c42d237dca4f67864033e93c9b4774555. 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/USA2P2468954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836900963ac641e2f1405baf773304201dbd166c726777be48e63148bbd1abb3. 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/USA2P2465510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf128455145d4c7afbdd29ff2633dd398b57441747b6b5a8ae84bac775a4fa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2462379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c4995490700274683f3a7986f53cf673789ef6317776ca52791be27edbff5. 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/NOX8G2400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1404889c224b0b8b3f360a48c1f97403a830df98fe8d94755ff3d8efb0d5109. 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/QZTB32444486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4f035b5e8e8abdd979a2bfa3df4d73558ba7da89dec706cb7e29a914d1871e. 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/QZTBA2437118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d27c879a7a6dc9ed6c3f1b400744328cb6c9d329e8f63564565fcfbf1ec1f8f. 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/QZK6N2484648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abc1f6a1c0b6363f601dedafa489725933b6bda09c64bad2cf81e0c087ee11f. 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/QZHN92425726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621c98d37ae3a58c9bb7e4956e63e0a598cec3407cfaf83b8c9542d1ea1b27ac. 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/QZES52455045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fded5f06be88301fb83c7557fb7616e90ad2820036e08eed602915444d91a2. 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/QZTBF2303453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172705d3e233d3a5ebd2ed606f80a1631457f25c8e10aa9e3b4bfdc9051d994a. 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/TCAHN2317059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb13eeea011eb079a59c9385ac2bf0cd21a9e8505d4d74fb18df9ff45b5935d8. 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/QZTAZ2365125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c45bd880ced2ad3321f65aa4c8facd46ddc38a8acec7f26d18f12b01bc4ea26. 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/QZTB32355609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac093f819b1437b089fc3bf113d0b1d567b2106fb06c9797ab7760c3b3f73b1. 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/NOX8G2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed7f70eab66dc71c7de15f0facf57d802986a7c60d2fa44e2f445bf722a6ee0. 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/NOX8G2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca09128cd79b1a5a7df172b01b737a4fb86bdf15208bc1d3fda8c99fb417001. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2513436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6493889bd38492bdbdd1bb17556c20e3b400bd611bcfd559f55610d6fa206fdd. 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/QZHNB2358942.