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 0xdb912111fb3f9c3bc6d3e12f47fecdbe3840828b18f7bb9ea2070383845ebaf1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f09b6fa6-728c-4464-8265-c67b15922b4a.json and https://artists.proofprofile.net/proofs/artist/f09b6fa6-728c-4464-8265-c67b15922b4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never ending song of love - You are my sunshine - Schönes Mädchen aus Arcadia
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 0xca1a20303e96777c142a5f10a64738337ac92b28e9a44ec19e324fdf61a388e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH0271109810.
You belong to my heart - Ginny come lately - Goodbye my love godbye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e43f0d04b6e9e6f8f7a4905b90b2f3656797149f06c0bbb6c4a3c89ea854ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH0271109830.
Alexanders Ragtime Band - Yes Sir, thats my baby - Goody goody
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67271ceca3003563b044dbf11226ee1b42db3a885ccba59ebc06d86fffa71cf5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0271109850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e4a9330da15984f5d9a564c5f667a13ee5200ac75ed3f40470b202b73e2313. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0270200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c303a17a4a1c174d903a982e0bd5872e2c1a009d7da4703b6b5a99f50209862. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH0270126110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e003b05ecbbee40e0e09a25fd874b0c1c24ea63e2ac6c8328ef3f6f52c1f6. 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/CH0270126210.
Jambalaya , Schmidtchen Schleicher , Milord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21694562337674e9605db5663e4e443f78f3cf13a2b38c4b24d7902a9dfadc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH0270831970.
Je suis seule ce soir , Song sung Blue , La mer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441ef0d95e13a110452f6bc119a188df6c0d983dd165e265a18579ad00e8eeda. 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/CH0270832050.
Hooray!Hooray! It's a holi-holiday , So richtig nett ist 's nur im Bett , Theater
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb947c57f37f09b4612e6e8bac31d9095823472e1c90fc52481442f175a10b85. 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/CH0270832240.
Be my love , The Devil sent you to Laredo , Kleine Schwalbe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f59fb43c65bb1febc562d4d0cdbb89f02d71b6386a21df9fac3cad4394f4c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH0270832270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356d9ac75a372898ebe179a1555e8889fd762541fea5f8b7cbaf631e0da9a43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0270832280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d30b6c71bc6226383f1e5dc4458c7f2bdaa69771cf112d7d743c0e9a0a3156. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH0271106380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640183ddb4b4ef55108a6fa052bbae005a7e642fef8250ded5f0562e6152c56a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0271106410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff096019f2f2a88d2d6da2a622bb99ed726c303aeb10044963ccda18d04331e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0271106460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437361ed01dc6b0f2ad816b4bf64246d81aa30137a4798b8a0442abb46ba6f33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0279910003.