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 0x43295c6d81d1be6cba48485bfdc61ef418a53760a6d06189457d72ddf827682f. 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/392e08b7-37d7-4fb0-a37e-928a088a1df2.json and https://artists.proofprofile.net/proofs/artist/392e08b7-37d7-4fb0-a37e-928a088a1df2.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 0xc548f9ba5d0e425cada494f0ee17601a075f5ec13514a0d765367c0eeb2da374. 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/NLQ8D2300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd18979991fa67ab4a7f7b904d9dc53a341c2f716946a6e2956979c86b0e3f. 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/NLQ8D2300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a22cc84c04227f67097f0c1e5aebe0fb9adf699b0fbce12ff79ba69b5190a8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM6N22455016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a3bd25bb1a4e5fcd4b31fdb9f5404ff125fbdc7b05f655f48b917f6876ab66. 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/QM6N22455017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea5b727dab9ff4fd0106ca6ee0d282d7d0360ce900c92cd6fd5675c1b0f662. 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/GBKQU2414618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2cd1dfb28216fa32b7e7bb5a91233be6753ea60529867943994cad2f606995. 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/GBKQU2414619.
Live Your Dream (Dreamland Festival Anthem 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f1d0abcefdc9ed4de2f0f52af900895f041c190ffcb9bcc04ac19a4e6a0003. 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/TCAHH2391720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc342b9774400f2e5886b4a81cfb3d6dd6c9a27afba6e1d3e0b9eba6abc257672. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NLBW52200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf275d0d6b4d64bdadcc8d080436d8a0f0f4c3d64979ae2d903fa17123343ec0d. 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/NL4VT2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f5dba4ae0462c9224c2611da480c630de6d01eaee6af1d7ab6cdf230b53e41. 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/NL4VT2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf9695c1132a3e8538e5a36ca1a0444d6b6027594fa764aeab730ba6afe8108. 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/BEB682000451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c09af76516b6014cf46a6bc1c10582674eba30ea7d0e2e65b1b42ac1c7bb33a. 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/ITB841800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8f02d549a71245501d91d2ec0529e723ca1952b2988c70123465e1b34ea24. 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/BEB682100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad88d8a5d17435ecf98919a6a469e5c1cbb9b928c98ea3a3167ae7b0d33ab478. 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/NLDD60900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1b80f4c3d283a37502074998cfa32dd8baa617365db4f0c85f527b3d4e4e1. 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/NLDD60900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b613c63ec04957ea808d45eab7be8cd826386420b80cc84697c2d017a54c7. 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/BEB682200488.