Mar de Copas is a Peruvian alternative rock band from Lima. They emerged from the South American independent music scene of the 1990s. Mar de Copas sold over 50,000 copies of their first four albums
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 0x8bafed988a8172e7ceb09af19bde6bc6e5a2a9cd9bd140a6e3465affd158150c. 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/9ff2edd2-e364-44d2-be04-7f487f225e08.json and https://artists.proofprofile.net/proofs/artist/9ff2edd2-e364-44d2-be04-7f487f225e08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mar de Copas: 25 Años (Edición Remasterizada)
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 0x62d530259335881a6fecabedfb2401de65c1d341b1eea78f38cd69ce1a84f2b9. 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/USHM21390169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bdcf0acefadc27a502e15f3b65d180b4c65591eede9652ed454dea4e2bea5f. 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/USHM21390170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac5ecca6054c1841a771a33f9009796e1b0415b6d6e2270dabe8f6c55558781. 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/USHM21390174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d848f6276b972847fd1a16d5a86d9aca80fe2189ae71f5bf77d01adac1fc423. 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/USHM21390183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1f58d70da809b855007bef23a18296f53c50d00628e754fb932323ab04971. 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/USHM21390187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ee894e22a15a6e04247a02fa76d2bb8ff729c7e6281b0004c6059479b50715. 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/USHM21390191.
Si algo así como el amor está en el aire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf72365d88c7e79f2238221aff041be998a046df506fce8abb1e711e108ce27e. 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/USCGH1592189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce51c51b2b49259a5b6142772633e6f0c03afd5e814338f54eead4b60068392. 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/USCGH1592194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af45b99fec19153ca56560f89d2195d7d2f4060738d479906840e05436914ff. 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/USCGJ1518359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630b6413b2ab13561ebdb4cbd37521032128ef657f7c4a16a49842bb688ad4d0. 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/USCGJ1518365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef109f41a93a25ecc6a11d60aedf1c60d9bc70d28d2c113621a072d224cfff. 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/USCGJ1764423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba686e4b9cb22099625ff690bd8ae602d508c11b1ade1921a5302d299c19cfd. 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/USCGJ1764409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb676a656cb7395b1ce5c530fbdeadbae9f958d1a428c73eb7850f4e09050147c. 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/USCGJ1764425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7778b97897fad365975b4b2cc21806f51e4755e3086e57367e08af38b37f26. 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/USCGJ1764427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e023944a6aad87455d36077b6bfc5a3b4587fe5da973744578d6040fa8f8f6. 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/USCGJ1764431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23c299544f26c0bf44de1b44862a35dd07b1c07b5811548ec8c78c5830d0809. 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/USCGJ1764417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372a4471a57f5d8205f94522b5e6782e9be8347a923de561b1b909ea9a148476. 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/USCGJ1764433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc71cd72c9c33d7d6e1425b237895b26474b76e58f49c7df8cb5f9cfff9c99. 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/USCGJ1505899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d32b17f8b3e611eff977964b9f596ba1af9c7b3c6fa5e1e10a7f744a3f71a4. 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/USCGH1715165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c108a2b6ad2148b11a9c52284c29fbb8b36fee8455e379c5c7521cdc963b726. 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/USCGH1715175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8a3749dd837dd1184d2ec61091a64dc7198a4f49e536852b03a3239d28a92a. 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/USCGH1715193.
Héroes (Canción para el Bicentenario del Perú)