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 0xdda4542eebebeb0f2ab152802f3421122b7a18ea082be2c7ba05114b165a42ff. 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/cd4a65e1-f1f5-4aed-86d8-412a821f5894.json and https://artists.proofprofile.net/proofs/artist/cd4a65e1-f1f5-4aed-86d8-412a821f5894.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ddd7c49c60977a98f19259cb77acaa9f1863949eff5f8d4013bbaf70e2871b. 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/NLG661900439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5bdbfbd0fd06b50c76bfb462bcce4a397a1f5ac2977b2236ca1f270c1bd1d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLG661900441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d177d859f2c7fbd12597c7d3e6fc13a71e0fa34998807e70a5b6ab67b01c506. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLG662000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1ed2eaabc48220036a6855f82699d9727b634ebc19145dd2dc0ff9fc0d50c0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:33:27Z), 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/USUYG1564172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21443562a4e729dde3e9691966a82b15d2c17172fee49e10db8ee467a0185e4. 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/NLS5K1700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb096aef7ea2e9e9fbf2fddd2ef747004463fd96456ee425ec05b9b2c26403c4. 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/NLS241900143.
Loco (with MamboLosco) - Italian Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370c8e89d0be2241c33080caf77fffa5beb74cc73f4b980a0d02fb89204c87ae. 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/NLG661900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15dbad0ea8fd8c7394c2029cd8fcad17fe1cc4af57754277ebfea4fb0b662e5. 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/NLG661900263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b4c7c49814716cb3997f1a29abae68bd7a039109db616e4f08b6531067429. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLG661900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80600c117b90d9dfa7c7361c35a57d6ab8c3a9bc0f3fb0b036415cdf3a536ad6. 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/NLG661900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eeb2f454c3cda35a41b6c19e42cabd7086e7d07685dd16f29ed9ef50476e3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLS5K2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd914684dd9d54e4d22c417bcd3a7b95e47ae5dbc61e675ce315a320c0df03184. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL6US2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27842784ca74dd0fd9cb67ff44fd3e51cc18aaab7e637b0c2fcd323933d10a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLG661800295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeafc2ef6e169006e006bba38d2d7ebaeaca98fafec80fef9dd3657277c6bb4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL5HJ2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5cf44d3da8d30710c7b336916f178cb967f422429350204a76b4a422978545. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/NLS5K1700110.
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
Baby Momma - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179fd5d71f7254858f63ff0e9b617338e3a8db4177871edc7137fe73a60ee12a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLG661900661.
Yamilet - Mixed by Deejay Abstract / Hosted by 4Shobangers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec186a8c8129036d674371426af3d9a6162b68aed1567e162ecebfd119c7831f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLG661900662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a8a46e14ac4e021927346dcdfa646aa55d7c5affc5e1c1887795361bb9919. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLG661900201.