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 0x51651ae8081032c064c055b61636219ea6e79a20e56c2e52d91589438fd2653d. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/674efa95-1556-4577-964a-3ec1c50b6c87.json and https://artists.proofprofile.net/proofs/artist/674efa95-1556-4577-964a-3ec1c50b6c87.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 0x908d42d734f74a6ebc639b666c5dce8f2f7ce3689b2fd66bda0a2e74a55235fd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARC571901359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7aadb31442084a8da6e1596dcfabdad817f07dfd89577b5d510124e7a1c7e5. 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/ARN9J1600001.
Allá Donde Fuí Feliz (feat. Raly Barrionuevo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd0a67e74f82c762169526d144f23db31c8902b0b61323d448f94c6d26a5b2e. 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/ARN9J1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6271b24cfd23cae18db399fe0f2cff49c5f9ddc57bb9d044309b3b9af6389e. 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/ARN9J1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3152c82cbced19b2fda7cc584758c0aad6a373b0d1d27cf4a4acbc5709f2a0a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARN9J1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a5bb77f5f7dd787106d7b29b87865f2e8e37ee42341f1517b9b80ca8288d0a. 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/ARN9J1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02710a6458ccc48138c7069633a4a837260f0bb75fd07e980ab6f23f27060c13. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARN9J1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5f5ff7ca4102a380961ff48ec5ab09a175c168ea6d987bfa471ffc0ee137b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ARN9J1600002.
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 0xe74b1f7715cef068e1f608d096c4944575863858529995ff8921bb47c4d6eca6. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ARN9J1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a572713c0ebef71e210687e7324912fa5661e797fb6e202795164b4ed2c1f8. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ARN9J1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1730ac967a5300231f07c1946c8040bd12499eabdf8c5c790f57c752f25536d6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ARN9J1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76f018b2801b10939949170b53b83363bacb4e3f793247c83e9380d1f413026. 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/ESA012232208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abe6670b63cabbb04f1ac73bf0ba35e2f5815657a7d6393f0e154c452118c19. 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/ESA012232212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9dd18efa811483beebf50723c9e4481610bfb1ccb8b28087376e6aa8d872ed. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESA012232217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d13e6166d5f1c039036e4cd6b44c8a4a32c5169a5ece902b49834fa29564dc. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ESA012232207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e769c4880af952634e6c7d980806be818985d4a17656b00fb69a0b5e645274c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ESA012232209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f3005c073224e49f235abbe4f2ef201e04cc521e44347fd96da9eeab0fc2b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ESA012232210.
Oh Holy Night (Especial Navidad/Christmas) [Cover]
El Diablo de Humahuaca (feat. Los del Portezuelo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee9519818db3b0afcf65db6003dc6a5096080b12675d2914a2ee73fefad5a5b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARG602500049.