Cotonete (Portuguese for cotton swab, which was used in its logo; stylized in all-lowercase as cotonete with emphasis on the net) was a Portuguese website in 2001 owned by Media Capital Rádios. It ena
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 0xabece8e6bf5b8cccddf3618f55896880f854ec927736f83121ee208861821218. 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/d6b76ce5-e2fe-44dd-ae84-0067a9026d92.json and https://artists.proofprofile.net/proofs/artist/d6b76ce5-e2fe-44dd-ae84-0067a9026d92.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 0x9b00c0c12c9d2414486911c32d81763005019ded55310ab3f7e35a1e9b2fd24f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR4EO1700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05eb32767049b35373bbeeeb0bb0e97536841da1f534d1e8b8ea21f8bc74d81. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR4EO1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05eb32767049b35373bbeeeb0bb0e97536841da1f534d1e8b8ea21f8bc74d81. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR4EO1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb8df91a010cb41b839b3bda342e4663dd27f95aa588c0f42eb780b244df30b. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FR7Z21900004.
Layla (DJ Deep & Romain Poncet Acid Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf596d9c63cd14a1066ec6f55765f726f894a5cb22c8fbb0b3c091f8fa8da9d9. 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/FR4EO2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71bfd85f5b53fc1346cfd7e3525e07a9f320e5e70a7c5986a4f77c27d389029. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FR4EO2000050.
Layla (Unreleased Remixes By Sergie Rezza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6692524c2b943ed949855039872b7d199c7c338eae6c73cf585b9f012d61ef. 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/FR4EO2300037.
Day In Day Out (Florian Pellissier Extended Version)
Day In Day Out - Florian Pellissier Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad362ed5cce2a2fc00e2882581dbd2c76d78e449e0c73048cf4028bee9fae23. 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/FR4EO2300067.
What Did You Run For? (Danilo Plessow Remix)
What Did You Run For? - Danilo Plessow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa4203184593d52a0b10f556d3e2b20267a55706813ead848a0ebe1a46c966d. 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/FR4EO2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02149d7ba9880d031818565337dcd412e38d2781ab35c2fa8fed6f6c2098e957. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR4EO2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71f89b7a87b6666884b01a91173116a40be1bec45e7bbad9163b7d9e107bd1. 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/FR4EO2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a00b505aee73a46a609ca957b73357c829c36cb9e811ef4b84f5f0ef8e15a. 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/FR4EO2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6692524c2b943ed949855039872b7d199c7c338eae6c73cf585b9f012d61ef. 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/FR4EO2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0cb966c403f55a2251bbc767c2fbd7e18d70c97604b4e7af1ca23d9d268e0. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/FR4EO2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04a3dc2ee895395f2a32c7f982d32e83c62e7eb9f51eb762d056c10c447560. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR4EO2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867b76471cfb9412ff0516cf9a570d759510052d1a2aad36b3e413fee9d1dfdd. 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/FR4EO2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e349027fbcc0089efcc3c592a8be7c59e2777685ed9df196dd9cfa350fffa2. 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/FR4EO2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b611a5b0e5ac748c1b45663b40ca6f2dec1ca6dab48ce3a633506e7a322b9e1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR4EO2300042.
O Céu é Preto (Dimitri From Paris & DJ Deep Remix)
O Céu é Preto - Dimitri From Paris & DJ Deep Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604c96013367bf0fe0e5bc1414320eb0264c2ce18f08f7bbc0e330489dfe9103. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FR4EO2400060.
Simone Mazzer & Cotonete (Vinyl Edition)
Dust - Dimitri From Paris Vs Contonete Discomix
Disco Funkin', Vol. 1 (Curated by Shaka Loves You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b743814b20f2b6be908827e84c682f67cba7bad0121fc22200f17f552b3bb5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBFBC1701674.
I Want Magic (Dimitri from Paris vs. Cotonete 12" Version) - Mixed
Disco Funkin', Vol. 2 (Curated by Flevans) [DJ Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29467529c9136ffb3ce5c3012ca0e6c94b3231169994fded99df048ce9848209. 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/GBRGV1961403.
Turntables on the Hudson: Twenty Years of Good Vibes (20 Year Anniversary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf82a2d3546fc66b44ac1fd630deb34fa5d90cb2577789f0d400e3f6ed40a383. 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/FR4EO1700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6692524c2b943ed949855039872b7d199c7c338eae6c73cf585b9f012d61ef. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/FR4EO2300037.