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 0x4b3d059d826af82363d8956aece1b70f368dc364e800288806ceeba321b1ec71. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c521df02-2a2c-48ea-9d69-06ca73c03a16.json and https://artists.proofprofile.net/proofs/artist/c521df02-2a2c-48ea-9d69-06ca73c03a16.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 0x73263bdd5bf50190c05d481837b6b36dccaadfd04c6a0c9e1f916bf81b127c9d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZ5FN1728737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433dfb6d74b616d695947707ddd2f3b8d6dcb546dab1b41f420858033155fd38. 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/QZS632182252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b6f135765a0cb000df2b0f8d9800cd6cee827859e3ce79b2fa367a63302865. 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/QZS672193939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbc152c741033c93f45ffc1e8b255f80fcd76390412bf7a120e2850878dd207. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZS672176103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7394c365e6494b11cf19edd122542508b87cd0fc541826bab3b5a4833ec948. 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/QZS642118785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6dfa04c548e4449efdda42c18884fee2a5c32dd38ed1f24dfc0dad567cc18. 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/CA5KR2461373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1605ee8e758fa3d9154df54fd6bdd19b82bd5b9512baf8af73c43909c8127623. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBKQU2024906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a48bf958b33ddab709d018bd6d88dc586ee96cc0c9a43aace891cb4b49c729b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU2024909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68619e4afe50c7ec3c9ca75cb917e5130725bc32e789c68fbfe78b69cdbe5d4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU2073820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd334874c33976da0c762aca6975924f593f429ae2f9af8d6f7826668758eef8. 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/GBKQU2073821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7fd85ce93675e29f47840e83627a4aec3449a794509280f0366d277af2f63d. 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/GBKQU1959172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa583678f97cfadaf6e4b51c95a5ad1766311c590d540bcaaf6e2c96cbaeb5296. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GX8LD2366254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4566ad0e1a5e69f01674ebb4f29603cfdd8cf350fab71a003369c0e931def4. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBLV61818654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906cc88a854e074607b1aac34edb1c120d70311dd9b0cd2511f53dfbc8ba1412. 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/GBLV61818656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd890bd5624e143d7a0236d6a7d0fd5bbc8aa3c07d7a98383f7f39c5f47444cc3. 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/GBLV61818657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6f6d2a0ca8e7328c9c4a24ea5f7c1f2122ffda80045d3f66ca57ff0705eded. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBLV61818658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae7bf85d407bcaafff1d9af0d40118c8cbd03deafee7ef3ad20ff1012f0e7b5. 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/GBLV61818659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6035777ac389a99acf0365652ea2d97f73689a04d2b188dd330f9da26dfd61c4. 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/GBLV61818660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d2ad8526a8491334043f9907ffa3d5c01311f2785f66dc007a3e3ac4141db0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLV61818664.
Whispers of our ancestors - Zen Racoon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fed6276872a08ee3dd2d456da2be353315e05f29bbb84ac72d1730d4484fd7. 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/FR9W12004259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37f1799b8da04768f2c9db0a82e1bb225ec08a10b842b837e6b594c0a725ca7. 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/FR9W12004260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a9c0086a1bae4e02f5762680bb3aac20acbc7c1549ba6a0d843a7ff35ae65. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W12004261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c32ab7e04c27385e4b8f4024aa9fb0a1c39aa6787f1d7a6ee536d7cafbd779. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR9W12004262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcd362d0c2a92698fba2bdd93f1588f4cdbe18e310cbd6ddc6881c355413309. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/FR9W12004263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc8db58b570202974d2d5ad2bfee759eec36d6fc12a496e0401dc8cef5dd21d. 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/FR9W12004264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815cf69092c286ab3986693277ae6674cf8d287f759543f1196d68d55ca0cf05. 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/GBKQU2122352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed0ff0d4d543878fb6b0a0706d2cdce90f17ef6068be4cfb93e626acfef50e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLCK41087615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e57e38cece894b28cdf9c6f45950925301ecdf233048b2acbf5789d3e6337a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLCK41087616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e7539978dc81d144c0568b0b3f9a6c04fbf2a4e8fc6432224112f004f3a395. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR9W11820936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ceb3095d8d6fef9837c979cde44b513d41858697f8e8e011b6a8055139b42d. 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/FR9W11820941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da219de0d7ea850b805af86e013fb575eddf8f9e90227534a35d17ccf8a0dc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU2056856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d353e36d5e21f9b6958fc519e6e8044685b9b787a65ae38ee7c60e486326ea. 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/GBKQU1758668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58d46e60a21f8792f00274c51a8a71377599fe2096b5ae692b02d65061e277. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR9W11912436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3424500b35e3ac49c13dad7fffa10520b7f07dab53de6090c8e0a6c9da1d7056. 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/FR9W11912438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f86aa27b9a90d254e1a11f3bb93ec67f139f4673a76d4649ba27939b81ddf. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2151202.