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 0x4d933973b65bb21e8caa3df7a62a22d5bb49e72dcf0b23494857e039cd231fa2. 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/c9021e40-21e1-4c59-b395-b87b0ca37246.json and https://artists.proofprofile.net/proofs/artist/c9021e40-21e1-4c59-b395-b87b0ca37246.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 0xc12ec936ddd8b3cebec1e7fe7c3cca63ca91b23988a6fbbcb539592de47a93e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4719028fd23018aec499216fb731beade31ef30e91cad1a495acf880c5f757. 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/HKG731661261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda15cbe5faa81b99a3aa92af008e258a6e6a4d5acc99c386d472921c2346ded1. 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/FRX872457869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9de27981f6450958e890a2048da7386a6e9490aec500dedffda49e76dd6f9b1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKG731793372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9bea02cd2b9c3a9373c7815d68f6f1f72d26009553a8c82259262068067a50. 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/SE6SA2465639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b4ceb9fedabc3cf450587aca0d49e0cadf334f87ff1af2c27d4e5c183f9755. 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/SE6SA2465641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee06a8f1513ba0f2d56ee4d3bb64ed111c33f18297c641f36183a2a19c8058b2. 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/QZJPM2445586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46f37908e104447e7b7d6d176b1e28897ffa0a45ca8a02eac29927d66aba78. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZJPM2445587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafa22431bf480360d78074adf670ddad43abc8c2bbebb5e74de965554566af4. 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/SE5BU2534407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e596c883f19c3997b51e251e869988a4f79d3b655f24bfd342ba9761d8603. 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/SE5BU2534409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb522b9b1d23096efead5ffbadd01120142aae7dd0febf80410d9a67e388bfc. 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/SE5BU2534412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1321e3dcd7455bbfa6af549854deb21bcccd89367071ed8605703c56b1d292ee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5BU2534414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f049963734fe3b2e06d855887261ec41ea972e4f1423cd04731cf82593b29. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SE5BU2534415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59627a694d1524082b2f588c1aca82a65618a464e837819912c9e17dba397154. 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/SE5BU2534417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5ca710ce5dde80a472a4381420d7705160b6e4dc41b1afd09dcc9284c65c7d. 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/HKG732497269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde451c864549c38101772bf32302501ed3cc416136f72a164fc7ea978d6b33c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732497270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed00847e0e61eab68b4fd50f330a80723f3fdc99ed4b412a290926ebf2a7e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732406767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c6e3026a8072429a77e776c002beb2a611b255db5202d5c593656fdb8c7c0. 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/HKG731679188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e72c7f83b643aa6c68f6a8f088d2b3aeec96c14e10462816a2d6d64bc4d9af3. 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/HKG732376967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa343301bd1ca9d3e11bf69f97a31315c58a6993964631c4ca87e8c279b9ae8. 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/HKG732328916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67571f3d3abc8ec34b8efaaa6bccdeb0e15e6f9bb07823ef629f360f800cd25a. 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/HKG732253501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5840516dd6447c7ce32d46a010c864db23c57f34d9c9083409cbc55d10e3d511. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKG731721686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d86b6ab75ed943625caf3bb09c774064066ab892b6e408303f44c3486d118c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG732139788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3203f26d63ac350f37613bc549f8d9b358b5997c5b5df78aaff13c14ebf646e9. 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/HKG732135054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba3100828a4026693c26610e00911bc28fdb9bc0fac4fd178cb0fd9b9b0bfa4. 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/HKG732120650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1b6e4768ce0cb17623dc7f5858655ee7890f6305912a3e0399bf2ae9f8af45. 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/HKG732028406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f77db7973d31e50c93048e45c89e67d588c0f83279da663f446a72d7181d75. 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/HKG732028408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bd9b6940e4977072d0d49be39b4c916f4fdc7c79d40f242a44d18aabab5d1b. 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/HKG732028409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb77771d0d9223ed810e664ecb8b6b44b64bb9e6ee348a943d5b8dc47b00b6e8. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/HKG732019069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537d2c264756e255ddb8ff72e36e3cc7ab94dbffa3509210bd0925f97ec1c0fe. 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/HKG732017792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bbd25e64b4bfdba3a1c1d02b01cdf985063ef25f5b09dcf45b657a9944f49c. 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/HKG732017141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf28a1c2b787c9ce93f9822a70b6c19155c6bac4a1f16f103980a3bb96ea52. 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/HKG732017149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65ca49a8a5634b68aa0ddcc5a63f3a937414795c54d6819a0ca106ac17c024. 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/HKG732013203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe031c7ffa2ca658bf9dc4874d890744c49392c6c5758b2f16257cb4aa90eb301. 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/HKG732012170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9391f6b365d09a00db5f59702c70f9dc3ecd545ca86e539f6692dc99ac7154c0. 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/HKG732012174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a94bed27aa6f43fb398aca17e4716672fed4d12a8925fa89eb9847f0e9163. 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/HKG732001832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445e47c261a044509048eb7ba4ac4d980e1f428591c4537edcd50a5f6b2b49e5. 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/HKG732005372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d5d776db2c0e527f097c48481ec4b5800135bd1d28cb8e787ca30c0bbfbea8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CNZ702000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a94bed27aa6f43fb398aca17e4716672fed4d12a8925fa89eb9847f0e9163. 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/HKG732001832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b0b50afc858660ce3d9172a96d8a517006041f3b8c17e211b5a5cad6207b0b. 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/HKG732012179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59657bf97135e130246582f2ef44a576dc60820e4f01b275b07008b8993d208. 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/FR10S2130348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9de27981f6450958e890a2048da7386a6e9490aec500dedffda49e76dd6f9b1. 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/HKG731793372.