Karetus is a Portuguese electronic music duo formed in 2010 by DJs and record producers Carlos Silva and André Reis. Originally emerging from the Lisbon area, the project quickly became known for a hi
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 0xde23fa9d9bea6b229dc0f9b0c50791002227935067856354635c07144533c028. 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/de24e5e8-3b75-4cec-90ee-a40b427593d7.json and https://artists.proofprofile.net/proofs/artist/de24e5e8-3b75-4cec-90ee-a40b427593d7.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 0x999afa67b1612a624b5378c6c8ee9714067f83aca19f75d6047e1dbe88c417b4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBDLA1290115.
How I Roll (Dan Maarten & Pedro Carrilho Remix)
Barulho (feat. Pongolove) [Dirtyloud Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7757aad7a7cd652832dbc9971f5fc77f296ff09b61726305c9d7a49e9c32a43b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:30Z), 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/PT9CU1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fefe4015d6e75275b4cffaa42e62f203e01c4acee8d80fa4a958feb5501a9f. 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/PT9CU1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1576bb7e2d8d46c192496e2c695292fe81a7d98869e5e3c0aceab08c0fa252f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:14Z), 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/PT9CU1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a8901a62ca38f0ed07139c10f1978578fa42f4fbbcb680157dac3076d4d1f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PT9CU1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db371747700e342957c377e1cbd411a35933a38118e9c589ba066600cd7ccc. 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/PT9CU1500013.
Wall of Love (feat. Diogo Piçarra) [Acoustic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5eb43a997934f08b95ccb04a7d08ee8e1183c0b5b1488976630dae2a3c9b55. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/PT7ED2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8624ecc507fbd1ea7584957dc3076dd9ef4316414de819811b5693f2a6c879a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PT7ED2000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831fa520e07b981c3bc79ff6bca57e18664c35c633d69c8bb7e83c23b981d375. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/PTBM12100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd53b5fef5641b489dc58c84a2316450008849ab8045cd8c7e9ed0400673f70. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:47Z), 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/ES71G2152525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750e7a57b697ed99b433f72e406414ed8470834f9d55b4e17031b6ece88f2a3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ES71G2223567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2bc018f62b81a314006afe49276b228aa66c01f51d7e84cb2014bad47b036d. 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/ES71G2223926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e153e2c7d3b16a4d2d5ee989790ec316aa682d382694200d70d2037e18f3a7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES71G2339127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaf94b3c7175b16919530a496bfcb978ddd380771386d9f4cde476e83ecc5d5. 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/PT2DY2400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277c6991e1117db7eb2209daee9247f46b0a6f2d5051204bc6601c533ac78489. 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/PT2DY2400543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70639759972f7edc761bf974c78c2b4f5ccbd77ea6b5ea4f67f854a240d55c2f. 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/QM4TW2399891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90c65fd42dc8a0151175612e1af71a13db8abfb5a74fdb17c77b01a58163cf. 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/BX0BA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef232edde0a9b84297c625c50ea232a5dec4dd52f91ab6d71e18e1124d8146c. 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/ES5152000376.
Wall of Love (feat. Diogo Piçarra) - U & I Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b411e0b671a7130d3ba611391677c68f8a4f2504827538e84b0ec67458a35. 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/USLZJ1733421.
Wall of Love (feat. Diogo Piçarra) - Dropzone Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201deaf9409ca7861c70b2a558edaab90b1b9af4b874620023a22dc44f68dfb. 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/USLZJ1733947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7232730c8517dbcbf73a3ca291e449539c4a924b167093c7f15046ff933f28e. 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/PTUM71600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b172e50a7a796ff008482d2191454af2c776841b42a24e5501a7d58b30c746. 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/PTUM72200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b172e50a7a796ff008482d2191454af2c776841b42a24e5501a7d58b30c746. 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/PTUM72200121.
El tridente (feat. Costa) - Karetus Edit
El tridente (feat. Costa) [Karetus Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d7a396a61c786f0a1caed426cf53799b1dc1b1451841f6d1e33a4c52717c3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5152000502.
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 0x566f9aa73af5e4f96740c5f0718bf29871e82396f2b603a6b5225e580d952608. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US8DZ1201058.