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 0xd7b681d688f45e090e1e9e5d33db356e549f80c8fc58d5eb5176a973edc3d081. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99bdf96e-dc0c-46fb-acbf-d90683a1688c.json and https://artists.proofprofile.net/proofs/artist/99bdf96e-dc0c-46fb-acbf-d90683a1688c.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 0xdc8cc34c9ce8dcc6da4c6a01910c287b4d9e38e3dd66773a7588a2c970af7752. 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/DEZC62384138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4b8a8137ebf023424f3ebf1c23e1a07832903202188fdd2021c9162bce62e5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:19:27Z), 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/USDA12404881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07088cea749a24490ad3fad1e45fdebec06b131ce8fb4e51637669e769483e07. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USDA12324539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dda53e2135d8c929bbe0cbc6cf95aea8d43bd66df5afc3990da35fab6e6132. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDA12315732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29634e5031fe7a0bddb09c59ad96346c5cb6759230cc1aad3b783a13238fe1bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEYW82407018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147d4a81201a24d2ed9f97de224fc6efd7a5d98698050de8aacb05f40d2229c6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT2VB2403293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944fdda7b14c5ea7858322f205e177efe5188d36aa6f87068bcd4515e20121e9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:38:18Z), 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/DEYW82419746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe003d4524e94ae599111b6ade93697e3376d67bb872b386e0f99ac557f4a96db. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CAQOI2501258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a17db6357e4560859a3c88264a78b275db94d2ab77ddc19b8e039aa01445ed. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:13Z), 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/QZAKB2466776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717d9fa1ec620c0a167532ff445bac67aad2b504f3000ef6ac3d43cc80f3ef97. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEYW82505241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248f832764b45944365cc60f35b645acb1993cf8809e4a36dff9b643bc1084db. 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/CAQOI2510460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8ddcc0ab486a9e2355a9e8d06503db5ec7873b0b9532b4657f326dd1cdcc7. 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/CAQOI2509923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e13774f8c3cd6399048a163dede0562e487e8bb00da4ac8a8b22406ece2beb. 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/CAQOI2506627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248f832764b45944365cc60f35b645acb1993cf8809e4a36dff9b643bc1084db. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAQOI2510460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e13774f8c3cd6399048a163dede0562e487e8bb00da4ac8a8b22406ece2beb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAQOI2506627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8ddcc0ab486a9e2355a9e8d06503db5ec7873b0b9532b4657f326dd1cdcc7. 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/CAQOI2509923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd47c35a0fb9840ec79362735cede79556bf8affcb96a99f97617a6ef07cc84. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CAQOI2519718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8ddcc0ab486a9e2355a9e8d06503db5ec7873b0b9532b4657f326dd1cdcc7. 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/CAQOI2509923.