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 0x54ab873699b8375dabee2a24e4f0517367adb8b665abc2eeac272a74960d8c72. 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/23189010-6d51-4d4c-81be-c00656f3750a.json and https://artists.proofprofile.net/proofs/artist/23189010-6d51-4d4c-81be-c00656f3750a.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 0x7be6c42bb96196ac3276e7d4cd81cbd2fc429c94c6f66d6a63fc3a0f49abe788. 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/SE6RB2014202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745144f4c8ea28750eed398bb86ed17872859c480c6a04f91d8ebe514fec4149. 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/SE4RG1939601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c4fdd5f34dbb0397f4c8999b5f9621a9884693b65d6d5719c7aab624fc102. 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/SE4RG1939604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389ec17dcf44038f9e7c04b79dcf3345a539bca31843dcabc2efbdf769d4d010. 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/SE4RG1914202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7236e55351958dcc4e4d0af83f109580075e353b159a971e607d054e2766c1. 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/SE4RG1914203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a33c6da879450c3133376fb5e10a474c89945bd5cc8457baafb689d400b8c9. 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/SE4RG1910602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2754d7c77202b71e72e6fd1c067cd696d33c79f6188bbd37f17c8aa58a95e3a7. 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/SE4RG1910603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec34df1b1acf032f9d9da59e38883f387eb44351ecd38eb744e4066a4f1687. 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/SE4RG1909002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe383ae56f3421b4bc679c9c2fd8100282bf49a4ac2d324af4d6209dfbf3f4073. 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/SE4RG1909004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa695a25995f850bf163868817071099680d213c2c8701ad20befd6aff9469e74. 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/SE4RG1903502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ebde040c8ba78c7a3208c1ae0b709da82b81afdb713abcc32c9ec540e0f717. 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/SE4RG1903504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b63936cb1775938bc18fcb844660fd5ee42dd21c005f3452abc6b2555f2bf. 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/SE4RG1822803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4959bf129df239fdd384901b25f463c9ceca2cfac3f7b0ec80e411ca58ae1cf. 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/SE4RG1822804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6248148650af2a1b37ddc16a59a2d7ec43f57ec3a484568cb45f1d9db477298. 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/SE4RG1820401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e43f6a53c7ceb93a95bdece3be0f75bf172874b2e06dd7d87cdb8f1c8fee6d. 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/SE4RG1820402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aba3da5d0ece2387f5cd18b1a6c1f88306776dd66b5186c0ee0efb5d1653cb7. 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/SE4RG1820403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dc2a28ae58f2996d2c19dabace851b9b49c41c57194aa3405fc3cc75d1172f. 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/SE4RG1820404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e22e582ca296b5853936281e5fda89b8f2d5edfe02091c1383ab5f5ff1f4c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/SE4RG1818801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a81428d2c8b45b94f02de875cbb21fe43a0da8dca1be9c55d32c660474e60. 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/SE4RG1818802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d2e10211ed0724520102c8b7375e8ab41fa68280a476c20156b0f2841badb. 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/SE4RG1818803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0c832092e30d0bafa1ec986fbb43755f6effcf432e17b6bfa56aca05ff5862. 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/SE4RG1818401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4176c658ca4a789e60dffddf85913a73694ae6b3bdf8406fff407a480ca7858. 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/SE4RG1818402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596856722d9d2e0652834afede9a482e73fc450c36c13c8dcacab6598145b44f. 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/SE4RG1818404.