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 0x9141d09a615b7910472b3c3267f32528d5021f967ba9974c071493a109f20efb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e02530a-5523-458b-bfe1-bc40c46a0292.json and https://artists.proofprofile.net/proofs/artist/9e02530a-5523-458b-bfe1-bc40c46a0292.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Las Brasas A Un Costao (Remastered 2025)
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 0x8c0b2676e7053ce8b2483d4790103955855439d066abe0789792b5a6c19406a3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452563896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f504b71c73b7657ae7f9c3cd5c192dc60e691332bc21973536cd40b191c6a2. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ARF249490101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d4c090cc07df519235fb7ad799fd660f24803e53156021d6ab3acc6ec9995d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF249490105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e74ada5038cacbb7c1ddf005352c7e690f0910e289a3c7d35e81af590d81ba. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ARF249490112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ca19786d68d8a446df8b3337cff88fd6300189ee9f83a2df10656d8459b132. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FRX282377480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ff964761e65de69089cf2532c45e59af9718150252566b087eef976ef27bd8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282377485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65690146f00c03f50b9cff568cce476fa42dc3dcec23df74dace39e47dbbe4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FRX282377487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c45e9b69287fed2f6b1839dc42af6bab0df2f9eb9e5f692f7ea0a506494cf. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/FRX282377492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3629b24f9b5a9d58627af122e0b74e471d77d5117a1903d9455b684d4a90733. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/AR8L71800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dda802fc4b324467b3acb652349d60d2cdfdd71daa90ca764fd3efab997417. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:04Z), 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/AR8L71800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e472bde91069806d7f4e24eb366ed92a57cd9c0e35684bd80b51071de387f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AR8L71800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7c3c47a16daa4ed7a554c7ee2f212ec537aa5a27893471ea386f6644286de. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AR8L71500411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2997ae20447840575f0ace894050c0bd782202a11b10e094ed3ea5538ed72206. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AR8L71500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dff525a197026abe304a3656ccab6751f94734667928604bd826a027e60c98. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AR8L71500416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa921a4409be2efaa6e34d9b0c0bd5ab21500ac7c990011a3f7b109f46df7ae57. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AR8L71500419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd056e547f96096f614a9d4d08a365cde3f528a33ad3bc538a00b2edf66f0cf0a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AR8L71500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37d8ee714d84009ce49f1c56a16d7cf247b730d23137e4448ccedf629f195b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/AR8L71500422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da606e45e660f39dcc4ad85099a8c80b02bdfc627e9ed63f83d22d3a6670f7f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AR8L71500423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62caf73f16c8bb00c8f4b26ad8161920a8ef4d6d59871169c7655fc0fe4893e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:33Z), 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/AR8L71500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f0b24d5816df71f1a8beddd60287b011e4c48272d82576c4a5536380dcbac3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AR8L71500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d6086b9ec7c31d94c9fb66c547f51dc740d6afe7415dea389f57962ea21a74. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:06Z), 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/AR8L71500428.
Archivo Histórico, Vol. 4 (Remastered 2025)