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 0xef65c072b5134cfd9767199dda7d9478842c040ae9e983a8f9715933a994f09b. 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/64f75c74-38f8-43d3-b168-de0356eb283e.json and https://artists.proofprofile.net/proofs/artist/64f75c74-38f8-43d3-b168-de0356eb283e.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 0x17d35bb8d7c0030f31dfebee966061942cc3678afc9cd17c09cc855d36e8838a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR10S1903721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623d5c39c1fd1887c8c80e238cf6ab5d77956209b3b6961eb1731ee12d44b7d9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR10S1903722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80084c8daa29f8227595e96a65d440afde80de296d7c2e7b0218a07cc8431543. 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/FR10S1903723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8290abdea5d671e6289f2d3838721c9929e8b8385a06284e1135407f1b7c7ace. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR10S1903724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7cb991d3a4160e42ec4dabc970117a9052322cbb4300fb4064692f8dfb4a9c. 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/FR10S1903725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb313688495ca6825c265eb9fba3e761b0eb2eb3b5b0f92857aaf6838c02ebf. 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/FR10S1903726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cecc30520ecdc1113d41fdef0ff97d67d5267e36b6891df4efe5b261c9ba8c. 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/FR10S1903727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b29139f74597d30340b8b04bf378fcf71aea44a9179b9f44c2e8935d62a5069. 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/FR10S1903728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ca9e5cf226f03fedb15175be9d8f6e620405c12e332c46903884b2fb6acead. 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/FR10S1903729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2215ca286f1f70015ad715916079d0a0d326b8dfee704f9fcf0db97bae58dd. 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/FR10S1903730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c38c3d4b6defbd7fbe48c12499e62065a1499208a278bfe73a88005f1173fd. 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/FR10S1903731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed44625762cc4ba25f556fc3e5e9171e06eb4173cafcca3ca9ef56111c7078f. 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/FR10S1903709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac99555bd859161fe9bb9808541f77896c5b75d42533010034fb90f06b908c36. 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/FR10S1903710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe037aba6770d80355d0c80ffeaf73edfe008836350a0712afd23071dbdabe170. 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/FR10S1903711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc3c705e213173ca2afcd241921edd25336fb099896766876baefac9314c79. 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/FR10S1903712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1ad98ca5f8e700e4e0ca32577d46a073470b80cb2b85b6e5beba158258e0a. 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/FR10S1903713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8763c03d607c78a5446a72a0d6ab3c18c91d379b921e70b48002c1647c4fc. 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/FR10S1903714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac926d410f56fbcebb1accfe7a80775c6fbd15c3e751eafdae33a1e9ca9d48a2. 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/FR10S1903715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8be3606f3faafac8031491d5237c801be5229379ac7571f5e8014d2080cde. 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/FR10S1903716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c38e826519566dd81c1e8d68f50cbd04577d62e6afa33facf8eb55646edf12. 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/FR10S1903717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8ed97b9430a89a82421acd731d0242571f49eb55e1fea5e3263b9e9b8c941. 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/QZMEN2169910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61cd33c9df59b7a5d1a8febc83cdebfbc1fa8af3655c7f66b4903396d73909c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFZ22124976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20565bfaf6b56b4ebaf8358a282c26c6f4e69f94a737808e48d25c3d8fb34668. 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/TCACX1708790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ade692bc87074825f6726d99b4289246e47ab3ac64a960c8e7c70d0443d3ec. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCACH1581742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1b4d890f591166186776f19b38dd8bfe385af39fe77fdbc3ad7ad8acf042c4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCACH1581750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad9d90df0759d9aae9a543a65fec893838079ea453bfcbb0145cba3f3a4a18. 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/TCACH1581756.
Atalaya (feat. Edgar Pulido the Constructor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783122b2332a5e66bbcab836c2517dcba95bb2741f84b80edb74bda827021f96. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCACH1581768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc347861046aa8b108b3a6ae6126763507c28a1ec6ac56238b81c3093bcfac. 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/TCACH1581770.