20 Fingers is the name of an American production team consisting of producers and DJs Carlos "Charlie Babie" Rosario, Manfred "Manny" Mohr, J.J. Flores and Onofrio Lollino. They were popular in the mi
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 0xfd88d2a9a3d527fdc17984d9efbe851ff5660881e4e6107cacee04d41d5f60ba. 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/a290bade-cd94-432f-a643-ae7b67ac0639.json and https://artists.proofprofile.net/proofs/artist/a290bade-cd94-432f-a643-ae7b67ac0639.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 0xb04bdec25049147c43b3bf42018acc1d5706216a3f4f2fa12b2e42f610798de8. 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/CAU119505478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e8532f6dd47298eadf63bd705ad4a5845e037f0197c4c05e1e2946113084a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CAU119505491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa685946d23721fe0960228c1b802eb04d4dc9215ec5f8d96d93296fb1506ae87. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAU119505492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f74a8be4b736e01c30cf9107735c30af2b4d342c0edc80566926b8716d750e1. 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/USVR10400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c7ea8bb67d89a6a139a88535ab35622267aa0e7234601e203e86ae09de6c6. 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/USVR10400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed82091f890d4635e0093f194a209fb323c35e90d9a8675cd94eaad3565db121. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USVR10400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650fe57071c74dc0f56afc3d0d8d60098071a91e33e939391b041a6411463a2e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USVR10400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b9f30ef54678c6c27ad7f2f41201c50a4e2881805696b33ba871cd42dae205. 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/USVR10400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2e208f44cdd7fa1c566dfcd4a00ef1d2d236496f666992d784e9494858617d. 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/USVR10400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3e4823c18b0f00cc87e3a3d89cb02dfe388767e794d067e64c023db6115123. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USVR10400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e97d5c386ee96e6b4a177592261f1b5639180ee38ca7af4531c2865ce9c554. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5c498e2bbe19120ec09e46ca0907a4cb7cafb9639e71ce1b2d46e0d19a942. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USRC10201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243a1f7538ed174b9ac30e823b49579a2d65c3e07cb19b064ebe4d5ebdb9b445. 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/USVR10400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81148dbf421929b2f8787bd476dd8bd9e764bdeb00362ad3f9ec5b8f72f5a354. 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/USVR10400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa044ecc06ee43702406f7f154176ad6affa683ef530662463196d9f58a23c. 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/USVR10400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81176efe6f6603ce33ed893d8d2bdcfbd7a067c9efea516a9caed5f24ebe6795. 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/USVR10400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528894301919af66cf59c644e442671d398afc85e6990853dc73999fc3a6832c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:42Z), 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/USVR10400007.
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 0xbe670d8b4adf85a6f9bca955baeefafa8c6093d9e0f34970071bb4b5f75e5739. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USVR10400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd04b066aeeb87a84b012709c0d77d2a9908bd85821e0691b8a1bceae91e9bd. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USVR10400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb934560981e1fed591a3f8d34ca18f18e60fac5c0369ac3e6787ac89af6fce76. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USVR11800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1fb66d0847e148e1c923484dd8473aa57a2ca1c93a8227ff4876810e3b3cda. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USVR10400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a86d39c6fc579e433752ce1363e182bf5d01678ae1c6f6bf7775d7291b3ee0. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USVR10400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991a05b8d63eb8a7c3534a946704dbadd780be3fc046c296067cf0e10522d4c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CAU119605486.
Libertango - Arranged for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab38c9c42495b744afc3ef1d236ce0d2375a2600d39879e8012f1e3a0167cd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PT9HM2000008.
Tico Tico no Fuba - Arranged for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e538b3f27bc60694565a8ce551ed4396025a7281bda5f74f3c94e1117960709. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PT9HM2000011.
Champagne Rag - Arranged for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7dd77768780b77c9628cb46e26c8e9e876059788a5e05b937648a3010cec9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/PT9HM2000005.
Dizzy Fingers - Arranged for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88532d5487c33516e2c75f75d83c806699c0c06cd210cdcd45517a00edf14913. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/PT9HM2000006.
Carinhoso - Arranged for Piano Four Hands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90568fd117721ef630f0b1984870287aa71bb054f94f1c2e4535c3f9348e7b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PT9HM2000010.
20 Fingers - Lick It ( Ericson , Laut und Deutlich Remix ) [Laut und Deutlich, Ericson (DE) Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada01cf77fa0cedf03a15f2a91993bfb17b2b7a9a123bc2a3e6fe1db046a22f. 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/GBSMU8576576.