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 0x13ee2ba46489ccb86334381fba9d79811c98b4f344eb6ff8f70204f60553b736. 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/3b258bde-bee3-428c-af27-114ac27f1a46.json and https://artists.proofprofile.net/proofs/artist/3b258bde-bee3-428c-af27-114ac27f1a46.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 0x562a39290d2c77759ee2d0fdfb3679502558a4c7606f085d599028726481ff9f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:49Z), 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/SE6XW2348125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64116d24f77755bb6325495f73e9a03a1da8e992f7aa8846f06bf20c4832dda6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE6XY2334425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f524d7765d91cb5bd023e8c6e7e1952ab9c28439e933a6efded074f8ceafae. 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/USHM81787185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5399907a0fa5e59a1cd38c82b3b6148d5acfda101f79c036a661851506bee803. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6SA2338920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5013b9fbebfb397da3aff85d8c8262d295e06a60f810f72b6f5d15b63bb7d045. 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/SE6XY2300413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6421ea84c64533dce124488e6389fd6da968ea6a0ca08a041187d15df48b3302. 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/SE6XW2312702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201efeae6d3808e7ed3f8c58f01bbfab186f13b3a3d3bfc1faed879ff1ee89da. 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/SE6SA2364078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565ab0ca46c026c6ddaba1624825043fcd010195473729242c39646927a5c2b5. 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/SE6XW2374794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d62a0435017aeb67c53a244660608197c7722db063a73690936605bbeab2d32. 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/SE6SA2396981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5fd9acfa2921af5dd4ad3b1de529babe80520dc163ecaea805e7feab52ee72. 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/SE6QE2381399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20edcc62012a23674bcf5a7866779ec109d28045d03b14d6626b696842cd1d83. 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/SE6XW2342402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40db5d8927aa7b6af45e52d368e769a779da6d72d53211797907eb93bdbb33. 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/SE6TI2384792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780c1d2af3ad68f1d43209f94079e92cbbad7f1a2039ee6ba8a0e387cdcae03a. 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/QM4TX1613620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2947f8b130486b1ab8f451f77f2ceba8e7734b0ab58e57effd01844e24ef007. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX1613624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f80fa8ff7ed41c66f15d4c01b6f5cf7b6a635ecf159af518d4a1c36cf920361. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:34:40Z), 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/QM4TX1613626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb9318ff4e2125cb62afea38fc4c102477137a85738274f0a2891b171bf7ba. 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/QM4TW1620776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e142e88385309666fd57f41dee61450cc6c42cd2e184bbcf3457e090ded8fc. 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/QM4TW1620777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79563e088dc594f22701084f82ce89a342ba44969b6684bfc7e7df319e3edb9c. 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/QM4TW1620778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047c636a89280e3e7ee964afef248f3dea866026dfa0acedf7eb8360a9ee686c. 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/QM4TW1620779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679e2be5e19f1d2294aecca61b747bcf1dead8f38a2b008c6e1e5b81dfefe5eb. 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/QM4TW1620780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30267b637c6814a99914f038d37f2a2337b497060f7a384f391f93d819054978. 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/QM4TW1620781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c10928fd2ee41ce2747c32911c357e12574e16e407587efdffeb690e8eeadd. 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/QM4TW1620782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9f5740ba19ac6957a0c6a36d43a73edcf0269a40f97b7138035baacf51a41. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QM4TW1620783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102653c16c135165c23d733d59314fd7b683bf1b2b6b766b8ebf44d357bd82c. 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/QM4TW1620785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace528a15c604e19c4df99e70e57f1f2112584eb3d363f44fc3c4a2e52c143fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:52:52Z), 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/QM4TW1620786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc5503ec7d9e13c09fc717e1392095a1ff76d5e4f9b6b4333a168b3256a257b. 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/QM4TW1620741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802fd4edb17fd7533d2d70db2e7e856e0161609f1e049958691dcee18b303ead. 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/QM4TW1620745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c135897fe813480d9949aa4c8d001c8e7176ab8116941de5f3d1ad6be0a1fd9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:44Z), 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/QM4TW1620746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3149961d2eddab6bf2887ded895e72b01881ffbf91284273f8a691cdda321974. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:59Z), 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/QM4TW1620748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656a7fd5ecf92c957d442b3efb038235777d8f145045534b94ab3bc436ecbec5. 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/QM4TW1620696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3773bbe26fd52c0d8ad09ae1acbed2d5e9b0f315d8f877801bc6c3d3652b81. 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/QM4TW1620697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e6fbf785590c8d0f3e065ab2c44603092b47e96dfd4162d9148a0f8a5217fc. 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/QM4TW1620698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209603d08b588b0aaae356b1ebf3d5184b006b7525ea78755a83400541ac0b24. 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/QM4TW1620699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2aa51e8cdbe0fb19e57877010f9cc52d212e3926c5ec934adab346b644c33ec. 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/QM4TW1620700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573296c3565ee5ee47d2fea8dcf2313cd1f937992ad241ce355ed7c27a4af03d. 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/QM4TW1620701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e221190a9b87cd2cf75cb3b289b61af2316b3434df0144f0952e6adafdfed. 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/QM4TW1620702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f0f712daa3982fb883b493449e1ed4a9f4a9bf8f001bd7f2297fbad5e72e3. 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/QM4TW1634822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58584c9fbcb572377f1070f7330b9031f443c71cb8d94205b50eaf3d4e2fb7. 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/QM4TW1634823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cfa12b461076dc0a8353de8d5094334f4d3025ded54b79f7da7415b71b61f4. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:36:19Z), 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/QM4TW1634828.
Vine a buscarte (Viaje al centro de la grieta)