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 0x3579eec215e6225d4deba33c939ed3d26f82381ce1782ee01d9df8c01209ef0e. 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/84fb35fa-d299-47a8-bac8-9613eabe4842.json and https://artists.proofprofile.net/proofs/artist/84fb35fa-d299-47a8-bac8-9613eabe4842.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 0x2e9f26df4e39f06e5bdc67b5ff35858cdf766863ebe4329810808aec0b65b033. 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/HKG732292072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63252a5ad4a5a9b70694c86e026232bba42dfa9a587f3ce262f7fdb3c0bae8a4. 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/HKG732292073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef461978efc798f3fb4f60729bb11ab36ac88b4cc188a19498fee6be36663f4c. 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/HKG732292074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6967e2c89c0a9cf3e16e6e06fe38a0bd5f7147fc74b7eff10c6738d0cf867fa. 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/HKG732292075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9589e19cacdc3936ec036eae929c638f743a441f621045a8531a45c1c523e6b6. 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/HKG732292080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1727c26fbb569b346f92ebea7320e516d9a5013dff6e23a44b75fde47a552302. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/HKG732292076.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cd3217801b265ffb03ee766aff1bfd9b4b4ffda93111b4cff5ffbc1033c4e0. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HKG732292077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7120b3c68dc27e2d35ec6cbcdb3b25ef91cbe672b83c86e152d46aed65d0c7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/HKG732292078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe119e2514d2a15a86a3d97ea1cf1573d089e6ff552ff4fecb08b1095568b5d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKG732292079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ce12dd63591554716b352bff5824bc09d6640ebc3767ae6543a3bd89840a9. 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/HKG731652970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d730a2448f8ba7fc27a2e85e60bbb7fb3bf06b168c307a99c1b5bfcb9271c. 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/HKG731652971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9205b0ef2321b52e06fa2f2c4a512fde823c0c35c4ad6f8a7259a5e9485c7f. 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/HKG731652972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a401fe251a259459c408e8cf639e1a5ce7f868181790baca9c81f4d53f35c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG731652974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7159bab9edf262e0991ed84eaff176a30220a36bcabfa314cd881bb1c0acb0e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/HKG731652973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa721864861cafe6c6a2ce7bbcb40cf717aa456765a466a92627a76d843bee51e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKG732105428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3448aa8507b0b468e37b66321e8c6ff08c1daf8b9c423da80d8bf7d2ed219a9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HKG732110431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf58b7fd04470516eb5d602a36c3f6dcbd219fd8a20504af7d1653312ce4284. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DGA082414600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37f1fdc77eab0978e5120f5ac96a55bf3fc6ff70ae8ab81a2515b5d5a94876e. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DGA082414599.
Fragile People Fragile Lie (Rolling Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139989c1921a114500f99de1ee898f3d7f6276622d4cf65f0fa8296da4781660. 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/DGA052340795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12830326c8d8e87b8675f9904d8ac1e5321779bd5114368a4b3de6d25081abbf. 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/HKG732261481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe9a258f4feecbad7d74af8e02993ea7337bb224ac94c2e286fd2ab805ba064. 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/DGA0R2332265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5779fb1338e3a629edd04b6d17cd9ff9d8791fc6a9ea16ffb3bd6d159e7ac7. 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/HKG732010371.