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 0x0036a7317644a2c1286e188307f205faf7a29dd7a72079a3a11eaf85ed445e42. 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/c732778c-95c0-4f95-8d1d-4f74089b2c13.json and https://artists.proofprofile.net/proofs/artist/c732778c-95c0-4f95-8d1d-4f74089b2c13.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 0x48de65bb2ef43c91ba3fbe2dde271a1fbbc5b88854ab1658d776803790e21b00. 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/ITNTP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea2f4b64fbd09034d512b4416543c375ba48f1cef8e4ec4c994a4bb5a74c834. 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/ITNTP2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c018726d53e45736447aa528e69472934e40f3e7cfbc7265ec294638626e48. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITNTP2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1fb3f433f3e18b0dadc90ae3282405e7035f0ad3335e13942798fe72565bc. 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/ITNTP2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f123596d50d07784c84b6ffa0cab1174d611413838a1d068bd35577b8cc6f1. 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/ITNTP2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd575d6f27bd3a64df1d31ba56937065037a2c2894ccd0ef6fe476e8d59a2267. 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/ITNTP2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b14ef11f5315b66281cba274e815c0597fbc5174ebbc8e130a385efa9e1f33b. 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/ITNTP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c849382ed71b72d1faa2fa0b7a5701a19a4aaa7e5655525310d9acc82aa3f. 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/ITNTP2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831d6088777f105c4008fc7acaba9a3954dee6d3245affcd41435fa7474489c7. 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/ITNTP2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71c0cad2f920a019e934e09aab7a17a14162aeb0bad59a0e5ebd458eac97167. 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/ITNTP2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6f2bca3eaecabb0d9af3bfd27ff5890761cf1910da0b510b40a51325ad49c6. 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/ITNTP2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2549409ec25092d1854b92dfc65042e216df85b05d47f5c919cd8fadbfa47. 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/ITNTP2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da1e620d8f10922b6c94cd776f2130a768067f411b72ac72e68c776509020f. 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/ITNTP2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b843e06502b374a4c98523595af41aadff994ab64caa00ae1ca4c5fc8a05cf. 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/ITNTP2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184736c9b3726f6bc8bb5308ec3f20e963d120ade8e7aec14cf9b5fd683b1022. 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/ITNTP2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0febeecc256594bac26d3ff1f8062280aa10d8e0c76d17f91a56e90339ca07ed. 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/ITNTP2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e607725c7b2532baf59fce8ae0942cb73793a6923b64ab37d4cc7308f469d0. 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/ITNTP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf536a3f53156ea06959c163e0dabe36d300013095a4e6e7bd419a24a52596f8. 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/ITNTP2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf53472b3a698b7fed94a3254b5f6bece6a3106bef3f3a6491211a3461129e. 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/ITNTP2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ac7fbf60564e784f3a0ba73689416207cd8d3d3b7795b3f384b9cc93cbeee8. 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/ITNTP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83565c7a293992974e69d37e9135f445f349736b00c27f18680ed6fa22cb19b5. 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/ITNTP1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd351c79f212e765876102fec80fc4a1206cf0700f29bed31febe5ddd03fa76ef. 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/ITNTP1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632b7b47dd8b147bd79d3d3eb4098d48a4fa37ee8f98da1c0fa4e672b9cc04f. 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/ITNTP1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdb8ef68676c0800fee2a9dfa2bc630e25e5c2efeaffded1aeb2ccc1a02bd54. 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/ITNTP1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae6711a7f5cdfe581dad776dbbf632cc207c14f8e7e8cd8b792d415b1d100ed. 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/ITNTP1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a782e6d9a0dc5c927888c17850d341cf999efbfbd12112ff9efcef72a38b5f4. 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/ITNTP1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b067144198cf1e66122ee5cba0b5d7d62c8feada48fd5c2b8fcb06f39f3f77. 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/ITNTP1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fd28f22d8011528c26a8d8e8b47d4e2f009cc0dcdf447e3cc6409ce59431b9. 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/QM4DW1834999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ece9adf46f6d30d02e5d5407c6a6b303ee6c1ccf28d406599f0cfedd480bf7. 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/QM4DW1835000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423808bd69465bc289f73097105952a0c0d13e08f141e18ac4a427468dc1d2f7. 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/QM4DW1835002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907ba953788040d8902e1b96789104a61aa73f19d4ea10714b7b1d97ec716dfc. 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/QM4DW1835003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacf14adf391e151d0d229c72171be1e4a7940ec9f2343bb3d7d8045f11fc6f0. 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/QM4DW1835004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1fb3f433f3e18b0dadc90ae3282405e7035f0ad3335e13942798fe72565bc. 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/ITNTP2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b14ef11f5315b66281cba274e815c0597fbc5174ebbc8e130a385efa9e1f33b. 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/ITNTP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eed587679bb76f6433a375d649ff4d3549efa85f3c1826c771f8b8efca777d. 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/ITK252140005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0c1decaaa15f5fadbbc470f253b4cc6f2e2b04bdc27566c7d8b6403c8356e. 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/ITNTP2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7800eef17239f603d3076617ad61f70c85c1fd72ef2fe63b515c3bea3b579d3d. 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/ITNTP2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61999e10d01989e5bc972702afded83d974ca99e9aaecf3b3c8506735797119. 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/ITNTP2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2549409ec25092d1854b92dfc65042e216df85b05d47f5c919cd8fadbfa47. 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/ITNTP2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0febeecc256594bac26d3ff1f8062280aa10d8e0c76d17f91a56e90339ca07ed. 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/ITNTP2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e510c437ca2ef1582dcdea8b4754a4d92fa8da20beb7f4cafbe5114d57af31. 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/QZBRF1882490.