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 0xaf4573f4a0147b9320f9c163a31d5c2710c5506d38b39783f7bc8a1cf16e0b03. 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/b58f818d-e08a-4022-86d6-7652501cdd9f.json and https://artists.proofprofile.net/proofs/artist/b58f818d-e08a-4022-86d6-7652501cdd9f.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 0x14acb81c94c5780d566e3c4b943c4015075b615a5b3d7738cf89949ba899720e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA081801386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e9ff30d1b58411f88ab7bba262d6ecb7679b29960912e8bb4959c31ad2f49. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA081801390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919f1e20bc54fc7b1f21de2da1ff97b67fa311f2b40f65da808d2e904d6580a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ESA081900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec4f69c35795644b7422ebcfe44cef9fb43b45523a5382e55387211fad0df8a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ESA081900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90cb94a088a71b192bb1db75a00808409cd97762e12ca599039cd95c09a9e5f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:30:22Z), 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/ESA081900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a52b722beb37559216f16438e025f30515674186c7e15c5749eeeb4496e4fb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:12Z), 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/ESA081900234.
Los exsindicalistas reconvertidos en jefes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c2b2770754db700945b23ab2df3c8e7b687f080b405dd2ad25e8e3b7b8d5c4. 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/ESA081900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb38b6f35b9753aa75fe958aeeb7c2fba1c41f7aeddbcef06ee1fbf3516c17b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA082101555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c53765252df7c8aab210a5e5758807dfd909ed71d9ae01ca886d133edf7737. 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/ESA082101557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56bbbe8ab9f16a3e3064827fe13131163cacd113623635eebcf301e99aa20bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA082101559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56483e43bac0d6d069d5e5046e9fa680d0bf0842c07c61792f349a972dda7f2c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ESA082101561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564e016a4d5ad81ff3de740fbc3a2f4dc3215611090f6bb6f4779b308a00cfc3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM4TW2451756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe653824fc702f4d787ec31dfc441749a4dc23cd57613e47c92232ce0d176e3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:11Z), 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/QM4TW2451760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde28044a36d3a39d22777cf9f3b495fbb7ec6cdb1dc303c2769092f5105add30. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TW2451761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88bf3511eb2798fc26ed124d43db064aebaa1025d2caf5d0735c6ad6c20cdbd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM4TW2451762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23674a5315572d1586eb57122410a08fc520466678798b992184dfafa2555b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TW2451763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6911cede667f0793969a0418f2257cb8a8dfbf57a3331dd269538623866bf95f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QM4TW2451764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2aad43da1cc2ca521f6acb0ff87aad69430e175f3dc4ddf8bc6598c1a1fe47. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4TW2451765.