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 0x27cf1d8d7b8f6951bdcca35ad70753de6aefa9252645ef9de9dc202b79f2682c. 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/d8cde72b-f0a2-4269-aa9c-b665f33f24fc.json and https://artists.proofprofile.net/proofs/artist/d8cde72b-f0a2-4269-aa9c-b665f33f24fc.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 0x7d68cd65aac689dd277cb8fd133461c97269492b59685a032ea7745b5ecfa750. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:01Z), 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/SGB502507295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4314b16949d8f855eee0f331033d97a81fc66b2d0c2c4de6264e7e09581c09f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SGB502501199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebf5754a0871effc120ac3e96bedf2961ce8ec7caa4f57a6f66b7c5a80d0b33. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:42Z), 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/SGB502506371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93334c5626a7693e562e1e9a0b676abe664a4bd7e6175498d6baf228ea76efdf. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:39Z), 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/SGB502507867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812e2c7097686d6863d9e9bafa831b6a263f31ebfde2858abcfdaebda9853cf. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SGB502508635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f876c7f7a0679ab0cb4beb3b77db665f93895fbec48e8f077ab0a904f198613. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SGB502508109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556c1832005809069e1cce345beadf518dc5e1f46b5107b67c7329999d7dfab. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:26Z), 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/SGB502506865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35ee2540074802cb936ecb505a65659bc1338686c059af699476dd929932806. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SGB502509724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe362ef0e2956f412f76e993e41971af25bd225a9786d59783056b67db9b19266. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:00Z), 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/SGB502505756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb020196bf70958db850b6f96a6fd035fccdfb9d6620f1a56f7f631f4b57fc5f7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:48:50Z), 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/SGB502503881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651dea685df1ae35b5506c3e2a59978af7bfae8dc5d03155dfbd35355042284. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SGB502504757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e90446f9ddc90aced3e63c9dbc426225ff46400cf9c5eda1d8565dab1e7554d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SGB502503293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48094cffd500a23a2467017a8e5d39329d050e27668fb81c5ee1a78909be61d3. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:09Z), 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/SGB502504902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff4778438925915e05c2c04c03b33b6d2aaf450021c6d31d42a3915143d9630. 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/SGB502503648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce04309ccfaea46d52bd707a35908344ebb4294d105c6d1553127bffad57d6a2. 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/SGB502506931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b915c5052277d499565f836116e9ebb7b8189923992ba56343dd9ec4fbd389. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:21Z), 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/SGB502507060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2325ed7ff057121973a010246bccb2da723fcfb04a113983ec20224e3c3bf20a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGB502502385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d87baf5112ca59001857eabb5c940524cf534b2706f8b6ade3108e97324ed7a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:03:28Z), 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/SGB502500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc65a27cf5c42eb4e9252e56cf5ea64916c66057ef84d3aedd4365f5abce5e2c. 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/SGB502500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba260e80c6971acfb12634c22d9933cc56ae796223fb48b3d65b43bc4a32220d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SGB502504835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0de72fa8261dfef700d74b9f02f3a8fcc94e2b04b5546724f94d40567f2bae. 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/SGW502503873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc844147d3cafd0aa05e2e03ba0ee9e30379e776051fd23804ff31142a571283c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGW502506259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21049a69849f262f368897c4c2f6bcd1d4bf7ef605545ae3b9c2fa3cf30da35a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:06:05Z), 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/SGW502502081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add800a9d4438286645a1b0a8e5b5dc6b9732252a69f813e74041ac3c7cc9b2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SGW502506134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c0c6bc9a96033a03ac4ccc5860faa168590ec18a9a993f0b16c58ecd976d64. 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/SGW502508209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32499aa0d32b74a03b9be56231ba330f659ebf9024a5e9ae2abf952b4081e2e6. 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/SGW502502196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d0071e5c518c0afb263ded76c58405ca6611b8d1701f896977bd315c4e78e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SGW502501580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3950f7295c8c341b4bd54209bc055c1d7ec3c8a8f192d36f3fef8af34d13f87f. 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/SGW502503813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b132edc2a510de6d1b9a68ba85dede2cfdae03b7642b021c934d476dff01b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:06:35Z), 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/SGW502509709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1516a61309c12197a81beb216a342d7bce262db85b201e29aed14cdee5beea39. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:17Z), 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/SGW502508429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d669a2f92b9478d3ebb89dd909eb6cf81e4713bdaa1a686530a4d98ed704ff. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SGW502507276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906c0faa440f31b172deb9a7201e920e3043355cd1e202f7d7aab04d76e446f6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:47Z), 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/SGW502508204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaedc6b42c1970cc6adb28701e5e472669470ee6bddbf0bb21891a6a8b054472. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:55Z), 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/SGW502508597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484bb579cf32009337a40c51bb62061453d1c7a8b1146c733c773b927dafbac7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:48Z), 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/SGW502507005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8228be6fa229c7b96cf89482bb1dece86b926a7b057602f8e84e93f717c2b487. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:34Z), 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/SGW502505023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e4d254b1da31de98be2c7d64bb28818759beba8c857303d7adae9f9cfecd84. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:20Z), 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/SGW502500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c473d5d3298958835b9d6afa3e2ac3f65beb2258635bdc7a22ca2cd3798e6b5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGW502500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626ae9a12d2cb81361f4404d09519f4a75b35c259a098d499a9ac9cec045564. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SGW502500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6840e0f3492c31c773365f4d6ff6e19f11cf32ff95cbc278e4e215df39dd443. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:03Z), 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/SGW502509233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7339a7f9cd2957d06266ae4d0f15277273d449d65bd683aa55fc008bf054605. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:17Z), 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/SGW502508174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59576fd87dfa5732a2d10c8ad6cea6ac323e57db94e864b40e808ee14185524. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SGW502508620.