1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f83b459ebc59cabea93ed8de1797f6fbe0021a835fbfb828bd1f17c05e9804. 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/5d023ece-f06c-40d2-98df-8788e171e9ce.json and https://artists.proofprofile.net/proofs/artist/5d023ece-f06c-40d2-98df-8788e171e9ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb495d1f7fa81639e8a62f0b2bc46e877a0c851b5da229f691233470d13e3e991. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZES62079320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ad2f5bfbcb2a782d82e29841e8b7d55d4f141479403638e529b1195589b5ea. 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/QZHN72290000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cfe622d7b2a87a8ddbe584ec023d400ede16b7d48ca9f922fb9d2c22fa754f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTAX2231888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121dbe44bed2ef7b1c6704b9de93ed3e90930ba53c5c6fd50bf30e7104e47bf6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB52273210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50f24ae2afe32fd1169e2f6c82dd1975832844a64b53873a707f52481d622ca. 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/QZTB82282840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fecf36e2de3658d2d00f9eedd00f2f9aa3ed0ef54206a8684d6320e952b9a7. 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/QZFZ62392933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1cf3ab13f6d3ce083bdd9df9338b4b1e7cae2827a3d9e0e679d1f1f3253167. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA62304477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f8843f8c3c6c852ce1fa095df321102220de10dadec4624612846c0cd0c894. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN32373833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1d1dac3638fc099f63f61a01e75960a7d2eba94d8db3d74e7b220ade4f33ab. 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/QZHN42396081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9456c2ae6ad5d764abd367c06394f74ba5685ab913e2182d9b14aa81c84d27. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHN82380550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3fe2043d884fa18a9e0cd1e06c185e1fda9fd1b5ebc9904c234c9a03f43adf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHNC2355959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06ccbf145df6ea0207f0fe8cf62f2c776e71b2d8717f8a032f5b6ad7707869b. 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/QZK6F2394491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba0ac671cec1e20004fb525d586395adb39031db15f181b40676b0aa118c47. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZMER2305810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70da72a90efd96a6cff5339499edd6bc91311d564a29f65c7fc74be5ea5727c7. 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/QZTB32337586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a969d57681c8148c0b599c24ea670d9a1fc89f3274be6f62cb2f51a39cecdd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZFYZ2423982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4bd4ffb2b06f76b35ced5dad497651c7291676ae153dbdb5160cfddb96109. 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/QZFZ72486216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f344192bba1d4ad30c30a734a3d5fc5372934b6856f4388ff48e7c8bbc6904. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6P2499506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46db5dc1c1dea165f36887f04358628e4448468f044f499d79f23a798fb5848. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6F2463737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf96fd47c2e634cf5047a694ee0c58ae7576e448cedd70075f16500757f9172. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZK6F2464989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fcb932e1a511d55827e46ca61872a26d4a2a26b8b0c7b8d3f428f14e0170ec. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6F2469466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ba2349c99fd4074ab62bf3f7999da383bf98266d62845aa257e91e62f46b66. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNWT2473175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ee518b180141fb21eeb6fa0671776ba04b5413fca143cfd142e101c29c8a8. 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/QZTB22480458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2786da8eb5c95cfa3eda762e58fea4294b337ee23cb6057d9ca7fb13c99ea. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZTB22480459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c40c26b0c84b80be756e928d5b93a9a4b3cb8d7df4d80aafa022ca41166b7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZTB42445441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c6b6382962e9955dcd60510cccdfc09778c9198dc4ae383e73caae00815348. 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/QZTB82432669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da966b6643013196b798f9d14ab967e602c445f8debfe383b5ef1aa73adcd0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFW2421470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c475764fb5e5342ea63d99efb0e4b0cea49f6f4209b93904716a73d41410d7. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZWFW2421471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e101dfbcfaa83f0d5fdaa82d4383926ba34c2793efbdc64537aac8e3152e27. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZFZ62543490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc7fc52b98d7be947424c13270ac34d998743ecff45bf542464513d320279f8. 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/QZFZ62543491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ed88bcc6b9ec1fffbe4d2155c534e286e0ae92b373466347f0fb03ca80b7a1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHN92522463.
stop, you're going to bring out my darkside
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9b19181a154f3db893644c0229d951283f4d4bb71f4641efab91e470c5a28. 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/QZK6N2560299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833a79aa58b4f86b4d242647301a122a44ae021eaa731db0d35c3c9236395a56. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZNWR2568391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe296c54578cc4feb8d3a41f72231bab2078e27dcbcc7269012422c0295f0a06. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFX2527347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3936ef0225cef7eab4ba9755ed05462e2aac2bc9e5ae72e9c46bc7d61cb2024e. 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/QZWFX2527348.