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 0x8d1716d221aeca22e87903f5fdd89eb4271c7de010986c4028bb54d94fb8bb82. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/489bffb5-70f4-4656-8cf1-24b0e457c1fe.json and https://artists.proofprofile.net/proofs/artist/489bffb5-70f4-4656-8cf1-24b0e457c1fe.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 0x37783d29c64389b4ac6e617e53cc3c96b7d944648bbbc597b89b14559c8ab995. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US67K1345805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be836f61fb4a64272280abf86ac4b086e6487771ef2dd4f8fb9c77b08ac7453. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US67K1346105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1df4122d9ae7b7b3ca2112a23eb4fd382bab105aa1dd1524d3f232bd2031fa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US67K1346106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cfb51798611e8e2d4ceef519ac57e13fcce95710fa76129b45cbb3a6380e94. 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/US67K1346107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f70d19e4acbf5b5fcaa305dcd90852089f0f0f0d3196263ca3dee7d952a3f3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US67K1346202.
Odyssey: A Twelve-Month Revolution (feat. Chris Woods)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655f942ce06656b78ea353c3e54fd67eac3709bcec536a1b2fa4fecafebc2dfd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:27Z), 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/USE830942827.
Something About December (Solo Piano Cover)
The Little Drummer Boy (Solo Piano Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7365633d836be8d390003a689639f7e019f3e2057b35ca39613af4fdb799df0. 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/TLVEM2429342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75111a45078fa380bdaa624a0f31276b829700754d4a185565ee35744d29bd60. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZPEW2455817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0da77bdc2b4af6078967e0d0e8a1b10ef7ee55e3148ccd35cdf9ad9de3c681. 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/QZPEW2447429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1e8c4a35400f727a8e62f687f6ff3d5033f7c3deec00705f55181cf59f4400. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZPEW2409983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7eadee7681989b2992162363a97d891a677b9dd72ab646bf824d2e5576316. 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/QZPEW2433299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7365633d836be8d390003a689639f7e019f3e2057b35ca39613af4fdb799df0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TLVEM2429342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcbbb56b5e380a49aab85dd6e0ee43499150eb0fbfa06da5772da4c5e6ae2fe. 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/TLVEM2473762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161161e668d60d9b9b04992520f9292a160503ec14bd02d0f26432a15a578846. 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/QZPEW2579781.