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 0xdfb8a8d274f4d74f6241ab3eb09ae2c7749b37b9f3850b8d58ed5ca4fc0aa2a8. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d129e76-a83e-4fb7-83cd-31c2c638b5c7.json and https://artists.proofprofile.net/proofs/artist/6d129e76-a83e-4fb7-83cd-31c2c638b5c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xaad50f52bbc3661625ad8bbc9f3717b78d4a2364cb92ada63b0aae2a638bb664. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMVRR1331040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fd7187057e5209d510b9035f65cf6f49c0099f55b80a42999c26310917fa0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMVRR1331054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7083b3e211099e04a0b504b6f1912850b75bc482ca6320be0140ad9a5efa8f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMVRR1331055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a07acb4b756d4dfa6650c8f02bceb73f4afe67ece0f8aaacb8d472be21ec70. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMVRR1331059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c7509b74e0ed3e9c9ccb1eca39c3a46932b91cca69533f32c4641cac477a2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMVRR1331064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7083b3e211099e04a0b504b6f1912850b75bc482ca6320be0140ad9a5efa8f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMVRR1331055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c7509b74e0ed3e9c9ccb1eca39c3a46932b91cca69533f32c4641cac477a2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMVRR1331064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad50f52bbc3661625ad8bbc9f3717b78d4a2364cb92ada63b0aae2a638bb664. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMVRR1331040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fd7187057e5209d510b9035f65cf6f49c0099f55b80a42999c26310917fa0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMVRR1331054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7083b3e211099e04a0b504b6f1912850b75bc482ca6320be0140ad9a5efa8f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMVRR1331055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a07acb4b756d4dfa6650c8f02bceb73f4afe67ece0f8aaacb8d472be21ec70. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QMVRR1331059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c7509b74e0ed3e9c9ccb1eca39c3a46932b91cca69533f32c4641cac477a2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMVRR1331064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad50f52bbc3661625ad8bbc9f3717b78d4a2364cb92ada63b0aae2a638bb664. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMVRR1331040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fd7187057e5209d510b9035f65cf6f49c0099f55b80a42999c26310917fa0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMVRR1331054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7083b3e211099e04a0b504b6f1912850b75bc482ca6320be0140ad9a5efa8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMVRR1331055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a07acb4b756d4dfa6650c8f02bceb73f4afe67ece0f8aaacb8d472be21ec70. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMVRR1331059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c7509b74e0ed3e9c9ccb1eca39c3a46932b91cca69533f32c4641cac477a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMVRR1331064.