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 0x3ab0d9101c9897f24215f85a9ccb7f7b07b7227b4c0a629e0500dd2b7153694d. 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/ed22e67d-4328-4462-835f-185a6eaa5f30.json and https://artists.proofprofile.net/proofs/artist/ed22e67d-4328-4462-835f-185a6eaa5f30.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 0x54d240abec8941b8c0b86b72324141100f94efef9d51297603342ada7febfeb6. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/USBS50410382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bccc6eff69feef6bbffa69abe63a7afa69ec9667c859283e60733eff5378de. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USBS50410383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd3f6686a559026c27cc4fcd5a258c6fbb955938cc66e5a8c852bffaef5094. 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/USBS50410384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cab9fbde8169fbe26529d7b9ba116459bb115ee470cec08857b1916138237c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USBS50410386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b807b6714f104a7689da2142d3041086deca057af6ecc67408b65cda351d9a. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USBS50410389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd3f6686a559026c27cc4fcd5a258c6fbb955938cc66e5a8c852bffaef5094. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USBS50410384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270674366df4b6bbf4bbebec7d7a86dc670a81f98ba6bb402c19d28ee98e5a32. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USBS50410330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732bc453a7613f99dfa09f27512540316a04413829e0d375104cbec8536fff7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USBS50410334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c3027fcad2284e2ce209f89122d958a8871e77f520285bf329b20e7b36039. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USBS50410331.
Like, Love, Lust & The Open Halls Of The Soul
Like, Love, Lust & the Open Halls of the Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd90a9efd8d997592f93b7c752eed7198daee4312ae806205688a0785a8ffd. 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/USBS50611434.
Like Love Lust & The Open Halls of the Soul
Like, Love, Lust And The Open Halls Of The Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6381a6a61f07465dbbe9f6ece7de46c2aa031b58fe00ad7ec25e64172fe9da51. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZXT62300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a012dcc186c98cc42da4b49be988878b10521e4fbe143329c570eac8920312. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USZPA0902171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1e9d7814d37bcfe7dce78df46dbd4d13122f28c48285ecf9c35203c03f303. 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/USZPA0902175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd66826d089126993804a47e6b40fad6f755a73a4870ae6474e3b9f0bac554d. 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/QZXT62300006.