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 0x1f7b92f1c8de6301c823327a8ece6b7888c68fa53a17bd976d8c2662e79348c4. 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/b0047cd5-795c-4215-bb2e-949bdfc4824b.json and https://artists.proofprofile.net/proofs/artist/b0047cd5-795c-4215-bb2e-949bdfc4824b.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 0xa9f2a78e93371cff59aedcbca2485d7abc2f7bbdb1dfab0ad237afc244922ec2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCADC1766726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52959d990465460aa481c737dbf77161d44d38ee34a15d406a99a8621fdd7d7d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCADC1766730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8607256b02b6b782b812731c112b46cea4f51e5ba4e0b1931eac8401277d7aa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADC1766731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e99745af1e29fca78bf20d49210b2af4bfef2ac7ff1877a33032ea15435cbb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZES71846535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d3774a3971358b8148836c65ceda9501d3495f6165d63cba6224a4ad772c10. 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/QZES71846536.
A Million Dreams (The Greatest Showman) [Fingerstyle]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde8c0a67b30e8c7efe8652236d8293af3773faa53670247f02a25474fde8eaa. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZES81988521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e866482eaddfa8b9b799953eda739968fa3689289e92a70f4e4d358e55bbe8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN41941165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a579bd68c5b5b653933131b8999252c43dc9a7cc09e33626e404f1d27e1911. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US7VG2033180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01930bae0bee97938684855d974c51873193f19712b529bffc81b271589fabe2. 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/SE6SA2189848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62776d6839cc09f7ee962becb1a44f8ccf4d635277c134ea48554fe7bfe13165. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAHB2325103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf71fa8fc2ca4226a76ae0af38b0ee2a4daf534e19938a908d3a832d08c1087a. 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/TCAHE2341099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0b0b800940c7035b23a1fb23d1640d406b5978e3728ea134849f22a205a81. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHO2313052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e537d305e1c34aef20ec06ec7fb657ed12e942ed32a080d7d48c8736c75526. 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/TCAHS2362146.
Waiting for You (Intro: My Heart Will Go On)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe77c428010a4e98a3fa1604ef6b6f4a57568f988e5ebecc6beae5a266300d. 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/QZTB92484730.
You're Still The One (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142948b0cce446184a2c334f5e43a5196dbceb1bcf47babcce92f02a84e78056. 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/TCAJC2455212.
The Little Train of the Caipira (Solo Acoustic Guitar)