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 0x77d60a59bd15e83ef2f1123db7bf15aea885f34afebf421a73b64e1cd7913d8c. 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/db703ba5-9b99-437b-b190-6b2d6dc87334.json and https://artists.proofprofile.net/proofs/artist/db703ba5-9b99-437b-b190-6b2d6dc87334.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 0xbadd66b1cb85dbd5e3fc27707a182046359f6792ba18f591bd05e53ada411503. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FRS182038312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435350e885c08823d7fea60c74fd75348f12ab7724ce44fc54ee95bdc4a1c987. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GX53U2006866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca983c8c04705700097a4e6271e680b2e137b29ad85a9612f0b1bd11b91ec07. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA62203826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a167c8d4a00ac5cc952f5f6b0ac9c5fac9a78f14ece72721cc49149be945cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP2252677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c2c8e489701b701107f6cfe7c54dea22ba1d46c973c8598132035ff3d22480. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:40:42Z), 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/QM4TX2378561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07533935a0946ee9980bc2c3a996941a7dc478b2292659f39a63f912338bbab7. 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/QM4TX2378563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18cc72896fd5099e2ed80f197b64ae33d54f6589224b65ea783060143b4cc39. 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/QM4TX2378387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec73e93121d22362a629ebc7eee1da4d0a76015f3530a8047bf025eb9cfb122d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM6P42219959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c998ea9b3d126ee1f0468911f41aedf443277dd30e9dd877b50e83f158f11f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLFP2243666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f869555b09ba22a8f3e3736894b72e5a6ac6b3c273738b24780cd117ae0b3a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM6N22336246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152231f66e75257a61d2915f89999fae9a57b33f3bd13e4ee7b23082a27a5762. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:10:03Z), 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/QM6N22336252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cff4ff052491a1e288fae4954a047e435d549d624c1511388f9dc25ebe6e2b8. 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/QMDA72331713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb06366b012633856d1527e148d3603ea2e71c5e5606509d4b66a71de64de83. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMFMF2385201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd259b4786c9a94e4a9337a10cf9b4901d0549a6339cea60e9ab25cf3d1a113a2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:59Z), 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/QM6MZ2403361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c03cb3a566a046a0885ca888069d3608fcfc3451191dc1cc98321f80df92625. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM4TW2442083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e140bcaf1abdac5746ffc3c5e21e65426be599839d0fcef3e9ffc5056b0907. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF2324809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cff4ff052491a1e288fae4954a047e435d549d624c1511388f9dc25ebe6e2b8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA72331713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799356aabc6c67cd5c448bc7b063f292b4fa4e5a359ebdb9e6f1268d23bcf835. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMBZ92434156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf41537d48c299d822581f1ff9ea457ecc7135f1784876f0cbafe8ef3e76ec3. 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/FRX202046979.