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 0xcb39495ec51d8d85641075f0654e33a49909babab2f2792079675be9f8e08eae. 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/066d5971-999c-43c2-8cc9-241113674442.json and https://artists.proofprofile.net/proofs/artist/066d5971-999c-43c2-8cc9-241113674442.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 0x8e1d9f5818d22bbba044a6952235c16f60ec49e3e53ed9898a7d969edca2aa0a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZPJ32371204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fee7bde0b5b84aeb5d0ed15400f8d0167c4da52d9a21794267c1b5a5b45025. 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/QZPJ32344525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102e44b57d223a75beed0ceed2b21902052e615fb1811eabef84a4e5f661b9b. 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/QZPJ32331522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa5cfc7121fd06397233b2d7ff2dbf201cffeee5e2cafa2e204e8a8b737c18d. 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/QZPJ32345449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cec0a7d0f897e9572ba898f22059cecc034a39c9b96332b765133f108c3a97. 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/QZPJ32355622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a82a6ca9e37b1910c90a9e39451c37d9b2fdd21370f8497fea54f4f0615fcb. 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/QZPJ32331908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef8cecbb6b9a6486f777033c4a978f8b19a6d90433c6fbf898ca33ee5b5b1a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZPJ32354552.
I am a beacon of light, illuminating paths for others with my black girl magic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acd7ab9f9a5ec9e8b04d85f94bff001289e6a3240a9d3695d5e7711b2086d47. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZPJ32347874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4b062660d19c5e896749f9ad5a2e7b166c61629b0fc75631fa7df39f9b2b3. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZPJ32330166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7d9c907bff9b6647820565a11a6bf2f66c651c0bca7095727bb04c5d8f86e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZPJ32349781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87882514b089017948e9156b9be5381e0c8a70888756b032e06f6f018fb6e525. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZPJ32353879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d14433cebba50cd1db915d869c43647fdb8ebbd59c43bf00d5f7fedc83f6d8. 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/QZPJ32341690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac6a8230402ae1b4cd7ed3e4539746f29cc9c96181fc36ef0496517df44d4ec. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZPJ32344878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd751882a8f83b31a792219a3e1707805ce5c4b7120376e54af3becdb3fd7eb87. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZPJ32334429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7359d3a8a7b34274c8e7efa4ea5c97777a80fa6d545e524d301c3ce161c74c. 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/QZPJ32317720.