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 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 0x1b2e6dae9a0dd9d62cbae9d08bb7ac262a3cfbf2a30a1e6748b85e64a82cf570. 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/9272d2fb-086b-4d88-b19d-bd63fab3cfb1.json and https://artists.proofprofile.net/proofs/artist/9272d2fb-086b-4d88-b19d-bd63fab3cfb1.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 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 0x268ad912933beda3561d54b813775ab06e11ca70e2c9fba6023301b4feeab3ae. 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/ES5152301059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41496eda34f6e81783c875caed2c6a5a83e4c996cfaa7dc1ebe1a27922b30d. 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/ES5152400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5877ae97faf6fbb67eed6d1620f5f1365a387e45a1e080695f19d917ddc4f8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES5152400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77111205e1afaf4bed41c3ce6a38e035dcdd6e30cacdcc4df7a69d7aec01a6c. 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/ES5152400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6d29d943cf9d8538ae74fe63128858f6ebc4e10434354f395ec29edfc02566. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5152400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c373d8f4c2f9ba7565543e8bbc302861daf3de84edad09a022c5a81f654d781. 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/ES5152400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12502a09fe96e987334f5d79b66eb53c7c5f6fd81350a10cabdba35af20473e. 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/ES5152400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc404cc8a481bc5723743ad9204261f39d7925b999ada97b922862e3d11a7a86. 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/ES5152100608.
Todo lo que tengo (feat. Juancho Marqués)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b14bcbcf5d91451aa48ed0e6fd4bb897799570ba0d415c5683685dbb537e91. 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/ES5152100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb017240ec5fa3354ee4e8649c7ecbf24fb0dd8e8c173424f12e38da4104d78. 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/ES5152100728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5614bb01aba6d61f8b9203f9bb7b76dd1b6336e7fac07892cf0512e090474725. 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/ES5152100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c435d32a491bef4a2123dcf4c295f9a51c4e813ec1bbead5df1d043159bec4. 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/ES5051700227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ad912933beda3561d54b813775ab06e11ca70e2c9fba6023301b4feeab3ae. 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/ES5152301059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7fc9b8d10fdb21f3232b2b37379f3278ec5d6ec4ae7169e4e5863498df20f4. 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/ES5152300643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56daa9cdf5f9eab11d7960b83af4114a8f26ec6fd8b82414b3d5d70302142cb1. 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/ES5152300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d007b00219875d14bf779975611895560c7b603baca1a25dc25119a38db953. 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/ES5152300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912fce0bc1cc14d03144112951435069d85ff312331a8c8f6fe49190624d6452. 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/ES5152200717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8410b9520cf148db123d546380085678b43e75735a7ef91800e161f077da28. 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/ES5152200465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5614bb01aba6d61f8b9203f9bb7b76dd1b6336e7fac07892cf0512e090474725. 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/ES5152100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b14bcbcf5d91451aa48ed0e6fd4bb897799570ba0d415c5683685dbb537e91. 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/ES5152100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc404cc8a481bc5723743ad9204261f39d7925b999ada97b922862e3d11a7a86. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5152100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76bd5d2dae5dc07b8625b21c6b8fdcacda55813f720c5fc3a1520a7d2b4596. 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/GBMA21868829.
Inocencia (feat. Escandaloso Xpósito & Karina Pasian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e03898a0e07bcdf46510595d4249721e77600a6bdeb002f82284aa3b1626610. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:42:32Z), 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/GBMA21861692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a36b6a4e4100cae2f0a8b3ad59fafb95d8aadb29563ee8f37e929ad4348a56. 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/GBMA21860680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3143f7508d3c0f797a04952592734c836af481ccd948dd0dc5ddf817fe3027e. 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/ES71G1881403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a40631b8c8ec7f1cf75322bfc30ba625c25d63262ec00659eb889ce547eedc2. 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/ES71G1858205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52aa3456fd977eda052f63f13685252b3b40a3b9ab4b862c5d01765c9ada6d2. 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/ES85D2000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b692a43e75b88115634485198727d861be4de58171a76d7d2ad28516636c258. 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/ES85D2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b692a43e75b88115634485198727d861be4de58171a76d7d2ad28516636c258. 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/ES85D2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52aa3456fd977eda052f63f13685252b3b40a3b9ab4b862c5d01765c9ada6d2. 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/ES85D2000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff995aa1d45aa55b9418c3efa96fbd62d421ab26bc86641a9a4cf86431e5f26. 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/ES85D2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcb9cc41fcfb2af0be130951f8f31c72810d313700efc3e2352a1619bd39463. 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/ES85D2000704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd8ff26bca7db09307a1b27311049c1d91b6fbbdb80dc346163a6383ad7f8d. 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/ES85D2000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff995aa1d45aa55b9418c3efa96fbd62d421ab26bc86641a9a4cf86431e5f26. 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/ES85D2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17594b29fc1fe94301c8f6b11d6c10ffdc052c7b80624c2c7b1a297a3da81034. 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/QZGLS2218273.