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 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 0x527ebbb309c2dec1e40d074f7cd592c848ae75e09c58c61a75d17c826f6d1a31. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ad8ea70-f9c0-4fba-be6e-61676c953052.json and https://artists.proofprofile.net/proofs/artist/3ad8ea70-f9c0-4fba-be6e-61676c953052.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 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 0x553d9e2a4df299360e4e874e6036fecaa54a77a6b3b4535ad15aa6f8be699f6c. 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/TCAEH1951240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5aee12782510e51e8f65918d2d20a1eee77471e370e761fd719e2c3713fff. 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/TCAEH1951244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818382820a5aeff441a00d993fe30df2f2c4d80b266464db57b5856c0bc72983. 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/TCAEH1951250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dff7539363c93ad4d9740f28cd916d7553b5981ea1dc3ebf1353d3a8f09b09. 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/TCAEH1951252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d519d029004f9c2ae4d636689b256a55b3c2cc4e87e35f555159bae00480263. 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/TCAEH1951267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2558752d6b2940aef904d245f1446572896cc82aa2dadf869f0365fd6c9a1bb1. 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/TCAEH1951275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f1c140b74a69d3ff98344621b3c8d486aec46266f11572fe4c78c47c1f7a3. 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/QZNWP2473901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc08568149aabf32d16c7942a15295719d25402ead4f6866294a7f99de228a57. 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/QZNWP2473902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a042b450cc460d0660fb18b192f57a6e48b6d385bd03861252e0e3454bf51d. 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/UK6KW2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4736dacf748a12f8062e995d2b71c4eb2a8536f4b274d5cc4dec6c8b6db7fe4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWP2271407.
I Write Sins Not Tragedies - Unquiet Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786dc9a7f90600673290d205b49f31b67eb46cea6ef86a7b7a44a58a5e15fd63. 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/QZAKB2204814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c4d46e72a3e67e76fbf9b1c5a20d3b3ce1abbbc158ab0c4e3720e17f5060d. 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/QZNWP2271401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f0864066fbc80385f31b931c6ffd7e769e3c224686cc9b666992b60a539ba8. 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/QZNWP2271402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceedd96d8083099bdba95c32a167c3a60540135b4f913dedb0a9b3e0eee6176. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWP2271403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17626b0e0b60cce2d1f77b2e57fc4c22a006db99882c88cb66b2ff6604d1111. 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/QZNWP2271404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01426870e6a5aa87a0106a079513fa4af79fef68331a47f18a7307ee87e40a6d. 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/QZNWP2271405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3afdb28eed7b50c30d02a8f79fb27752bf4bcb2aab4620c22f102f71243ea4. 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/QZNWP2271406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe396c27f0e3c1f61b05012e2ce976b24d4f3a3032ae375f0eb417a73e8ac8c69. 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/TCAEM1947300.
In an Emergency Such as the End of the World