1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x04a9ce99229902cb3f32cf9dfce93641d048960ee4411c8128c11a11b14abdab. 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/8288d43f-b30f-4fb1-950d-dd609d689222.json and https://artists.proofprofile.net/proofs/artist/8288d43f-b30f-4fb1-950d-dd609d689222.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 → block OTSBitcoinBlock must exist at that height 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 0x87292432459420a5a8a6c93445f4680ea56d9eec846161be941a8708b6d32586. 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/TWCC32201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ee3b350f7dbd64c36d527079777e0ea9daf1e4e98542f252bcb6e19c231ba. 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/TWCC32201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2acdf9653f3405cc2e7b21edb050969a000f736830eb70488185e31c8e2ac01. 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/TWCC32201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc22a5979b522f765053b0ed37fafad1095d3a1e4e71a033f66e39329b2754e4. 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/TWCC32201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e4e0f76ff88c9645cbcc8dc98d9985573f62bb3ebd0e4cc0a9a381969c6f8. 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/TWCC32201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0de650a4aeb43d54395a55e44ea32f9a80b73bbc9ddfeb4d188ca5ebdf48d4. 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/TWCC32201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784a179244633d2f9f57734d313102e6bb0baafd03e4fd7a23f6163aa18361d. 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/TWCC32201232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee4e6ce191d2abcc8e0d4fce486962df754d5e408cae8e527d645f448bee622. 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/TWCC32400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232939c274c78a4767b0eece29d06aa2d4d26e805a953b5bb9a2da6894be2d6. 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/TWCC32400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0696f1492602ab7974133ef89d9aabf15764b6125af6c075097d73416b69764. 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/TWO471600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e729c3f9b9319af69090ac6fb672983436d936d0e404c251bc0067d464eefa. 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/TWO471600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9b5fa977d894971c20922d2fee8e73e5edb677a6fd71e5e8b10a0f6db56f9. 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/TWO471600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c05a916b69b46cf67931e7b25ce6f59d0a167c7dfde252decc8894010e5dd5. 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/TWO471600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a77a1ec8bfcef31284e5a497b95a87a89192862c2829d79e1b9ba6075020a7d. 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/TWO471600208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e57ad4d39eb48c57e6cca4ff63c18d91baa9a2a0dfd8744501ebf940c221f64. 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/TWO471600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e138471cdefda99a130d854ec5b66f0758b3fcae70188104c9101d01e38c978. 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/TWO471600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c496fa7bdcd4a73220a93748ce618c687fa2de25e9970cb196e65e24705b98. 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/TWO471600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef283ddd93796316a8643c87bb3fae3620a82ab0a6e669462481e26c6a34d0f4. 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/TWO471600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b2246226d8217ee30d92e9fbbb630fe37a31b037f5e6951e3443895d64fefe. 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/TWCC32400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0906d089f167cb489e81632de91baa26d9cfb86f68795ae5d906b99d0ddd35d9. 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/TWCC32400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee749157ca4a6bb28ef5ba9365b84e137a7d3cd42dcdfa5e2995bc0ccb1b4f. 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/TWCC32400294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892f9a167eb82c4fa844eeea898127f2ee784682cdff42e31cb7417badc3a0b4. 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/TWO471901203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb180f52c60d654e1a2276cf2ee5fb7e1a75640100443165bd3c6039ae422a93e. 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/TWO471901204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf42c63147d92ddad5ae78f05fbe52b04e552f957115fcc8f56c124c78b154bf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWO471901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf84aea3eb8f2b1508e724ca9b1ca25d322c46c9190abe54530bb420501ef89. 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/TWO471901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4634c61d2cd59aff1c808ecf480a76d805ee58ef21c8e22131ad747712e5a4e1. 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/TWO471901207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb2a897fb587a6912679a68967856cf8c65bcd64ddb0235974b2f44ad88e90. 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/TWO471300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b809644abd1f75161a66e2152a882e0c0f8a402649a3ee4250292b30771a83. 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/TWO471300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce63249519a05f98ee5de01655c62a7254a0e945b0ca2c60b579fa30cb1e2d0. 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/TWO471300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d90a8afcd77bc73265136071086405dc88307a39fcc545a77485ac3e61dec. 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/TWO471300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d57bea8d13042341874183c7fdd345d3bad435f0896ded659a09645767000df. 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/TWO471300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97086087c3c0ec2e1355a77e2d646a7f91c8f9f4a530252008b092649ffd9485. 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/TWO471300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8512a352ed14995e608b4a9a9058156215931b32e617236be06fb598d968120. 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/TWO471300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3585c92fd40f31e9af9ee1bf24466c0b23e43add96871b622bcd3953ff559d. 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/TWO471300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4061bfd8537fed9b13815bc00ad1081c30fb01874eeffcedbd9340ee5373ac4. 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/TWO471300111.