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 0xc593fb8d284473950230712e663226e866febce7972d5e4712558678f6147675. 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/a9514bf9-a17d-48cf-90a9-1be0b4bda846.json and https://artists.proofprofile.net/proofs/artist/a9514bf9-a17d-48cf-90a9-1be0b4bda846.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 0xf5ad01fda0291c960c190ebe181ca705d87ab0ca6d9aca51f2a4917caf7a686d. 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/QZMEQ2410365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1405b9b5f9cf8d631fff1e2b30cf180cefad49652a74883ba89ce6fb023b67. 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/QZMEQ2410366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47deaf4482b785e66337760fbada1cc65468f49e6b6316495ccb35ede9d00322. 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/QZHN42402632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0926d2134dff4651b170048b9e8ba0bc228cd0c677c382a7e1d58b87b7455. 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/QZHN52345022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf0717f1b19fdaea912a6cb3223300e902b72b308ca6dc19f9de3cfc982842. 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/QZDA62313507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9d972f73e82db8dc9d4ad636285bb7ef4803b92c0460e5cd64fe9b7b81a31b. 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/QZFYZ2386785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf85a49093831ec17dab939704234e486822ad92bf376bc5443c86b0038a04. 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/QZTB92276317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5251e4983d9fed63776c366fdeaa92a5d2103f955ed25e0fcb7ced68012b085. 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/QZTAY2250927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec56234cef31820d2b0b6d4760c5049091eacb6fdde0e6f7ec267a204205cc1. 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/QZRP42214913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f057782fcb57cc7cdd9ff08a66bd24a33e025b43da79e39ebe89f83188401b. 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/QZNWX2240065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d827dfd168fdfa915d3d5b21275247a0c37bd3fed6234409e4c5809a92155. 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/QZMEQ2242361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895d695d3dc2896369ed3049b624a879268636dc95be720b2c567e2212095890. 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/QZMEP2263337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422688372254bf161c36071672fdd1429e809cb78f5c4c55b2659471824377c1. 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/QZK6G2201739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8844c27a9363bde99d752619fd1205c1616362fddf8f2b495264e1bc6e1d948f. 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/QZK6N2239646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ee5cc91257f7e746d5913949fed2dde68ec70fd7342b55a84b03db792e35f9. 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/QZHN82229394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a64d4694d3cb9d904ba85dbb3a10b972844aeb4b6b98aa7e01737feb0dd9e. 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/QZHN62223794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a7b33a791c0b4128f01b455916d16fabe4136db18573513d5d7d5d4a315bf9. 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/QZES92214412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738bab458e0dd1b011f5f0667cd6179fa643b4f9e4da2f99d05a311159b5b676. 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/QZES52202195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6c5650705a61d77a21a5b941e8139025e1de86372ddcaa57b1e9c11b2674cb. 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/QZFZ72216483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5469454b3ab8d7a1be28953cf4f8b469387a836bf8151e9bf44b5310a3a430a1. 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/QZFZ72216484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bd650deeb28f802b1847dd5cbca40c02975c90d397f27473f8c1d00738e3e5. 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/QZFZ72216485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86082ac90c27c624dd0f19232fc9ff80cb32a0c66dc83901531c6a093ceea9da. 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/QZFZ72216486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6251f076ef13a029c498d5d6c4f8f0ee63adf07814c6dc7cca7f4e6a6e4ec648. 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/QZTAU2137636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa8a832b7efe3cf9bd0ead07f2ef52b0cab36de990ac7d18197dff7b6f14cc7. 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/QZTAU2137637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c02fa2e69e516a6f8a2c308f8159aff1bcf50d5b1c9efd19423817cbab1261. 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/QZTAU2137638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe2491a09b57f3a0663ca8f58c9a597952a6626debde5e1944c05bb0c2ee1b. 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/QZTAU2137639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa63c4f4446aaf4ce805c9a9b10c756678c0457547ca9193abaeb4277e9ff66. 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/QZTAU2137640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072175ffaa429f3b35017200ef8e6ccca79f564ffc106e49fa45be57b26393c. 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/QZTAU2137641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df39c1ead09e5db0ccf56a51b5ca69dfa46be9cb562e531c80e43fac0d0bc6. 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/QZPLR2195154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ae3a794bbc423011acd1aee1e6097ec4d27352e352b3c006ad79b1e4b46d9. 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/QZPLR2195155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357b4d9f377da14fdf28b9654f0fa6233bc712b07a702a616589fd81b5419e5. 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/QZPLR2195156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1834eebf352e7b458d961600125de35738bc5ba1eef4453f0f5131dda1b24d. 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/QZPLR2195157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9532dd977affd8327273d01e1d64eaf4915b4bf16743678a70eb3e780997dccb. 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/QZPLR2195158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9139359c12daa13e5035cc6a78c588d709e7c51ebf92dc2d27b4542a428b61. 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/QZNWX2106230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b564784bbf0ea40f49428f9495458658fd9c81c3f6e2284fb5077e0806ed9a. 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/QZNWX2106231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc2a8b28111b06cb576b64f80bed7d1f0e959a2605772b34844ab4e7206699c. 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/QZNWX2106232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cac7dbe6420996616bdacf983a96abc93eb7d6ebc219e1eeb141f04d2a0e97e. 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/QZNWX2106233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ec0bc6edac8df089d8e8ed1394add0db2c9f0ea7d4052c83f1270ae46e0c33. 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/QZNWX2106234.