Bajofondo is a Río de la Plata-based music band consisting of eight musicians from Argentina and Uruguay, which aims to create a more contemporary version of tango and other musical styles of the Río
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 0x1cf0e40b00d148fa7d7b4137b7cc93f5ef2473c679c78402362a082fc46ce55e. 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/bd7ca609-bb11-4092-83f9-6a6329af4a30.json and https://artists.proofprofile.net/proofs/artist/bd7ca609-bb11-4092-83f9-6a6329af4a30.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 0xaeafdde05279a9264332820ec5342ada1abfeb007edcc8883557994e4cb89957. 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/USQX91202189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a7efc8ad137dad2bd5012c5391ed83ed9f405ef88b5460dc47dd6d1b9a63c. 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/USQX91202191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a884ea4323adcf0d95b90f7db36e2bb12f1fbd59c665d1cb3c27ae0200e858. 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/USUM70811026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a884ea4323adcf0d95b90f7db36e2bb12f1fbd59c665d1cb3c27ae0200e858. 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/USUM70811026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e61c76deffaf482f1e6b12c17ec666db29665295df2d086fdd1c410fae04a. 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/USUM70742556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff60ed3070caf51e0fc75e86ed9b3d51a815f36bbc3a5810c67a80ade063669. 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/USUM70742566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a884ea4323adcf0d95b90f7db36e2bb12f1fbd59c665d1cb3c27ae0200e858. 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/USUM70811026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342cbc0f2e20044c0798859cc605a06e452039ab2dcd0ddc301a3d971c14a11. 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/MXF012200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2930b61caaf44d3cacc1b016bebdc2e38801cddd69c2beda4594fe37cefc05d. 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/USUM70742540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b856129ce8b2711d60a783f701fe225e0250fcfb1121041f5cfbc771651d5f6. 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/USUM70742541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c294d9238a3f30560a96ebe10a7b1e983717566487ec4f1aea3663d052d2a20. 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/USUM70742551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14fe0d4e74ca6084516ec7f2d789f84ff5b6eb9dc5b4a4a61f793494c42df45. 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/USUM70742552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b24cdeae6ce9b597246a7dbd95059d0a7cc0ae0e85157c2b3c81a45551dd5b. 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/USUM70738967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb625073cea938168f17f3ff252db645fa5bebd69ba58af5e9c6612c010441ba. 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/USUM70742553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a5ed1d5cf717786e2c1860f70739961cd6c791837acc6f1993c98f994e00f. 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/USUM70742554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1175a8590d65f97c9c88233c7ace93b2eb4199281ff240e6aaa22ce7ba4cab19. 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/USUM70742555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e61c76deffaf482f1e6b12c17ec666db29665295df2d086fdd1c410fae04a. 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/USUM70742556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abab9d5311373069e4f10d5b4ddfb5ddc17d208aa5f351f6936388d76b2b7c1. 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/USUM70742557.