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 0x9600eb46cedd82a2693978179ae7bdf9d3766c24ea1c5883322d00b443c670f9. 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/68b3b26d-5abd-40c3-b58c-57fdc831c4a1.json and https://artists.proofprofile.net/proofs/artist/68b3b26d-5abd-40c3-b58c-57fdc831c4a1.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 0x7017d1fa5d8c0d4250610070133450d60ed210b77a5dd2aa98eb4722d56fff94. 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/USJ3V1160644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4904dc9cfbfed366f6de138af3cb7e586037ab32501e01019b12b6d0e71b9922. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USJ3V1160645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cee208837480df327db9468a7ed15ca3d0872599ea4f8964ba8eddc26753ee. 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/USJ3V1160648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c82d7a1775f573d68284c547778427096d13433f5d53508291628c63ab427d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USJ3V1160650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb926fa0372c8e52a565c82160036992b79ac0689b060175c2553011b363b635a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USJ3V1300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f93f2ee1ae337049ebaead8099d87563abfe3c0af7eea8e059ec88bff584c02. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:05Z), 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/USJ3V1421069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30c19f3623aa07255a583bf4d3425155efbc75f57b8c8e2edb57072f535d1a9. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USJ3V1421072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da14f376b7c0545d06d06765de968168235f106cf9b373021a2770099d9d546. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USJ3V1421073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5573f38ee6d86888a8e64c265f88a77c833c12452ec79c41a4b95dada9189f7a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:33Z), 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/USJ3V1421074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb403ce41275979a1114752e2be03551b0d444bb8c01b3b9eb30afbc6eae31f. 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/USJ3V1421076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cf096b26d96387949471592386d4e1d93d6c9071fb8174f41a0a75d8434c2d. 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/TCADY1840910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c61ba8343fd273eafd65454b7a61689aa66392ccc65631a11a82818c5cd2e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEW2053044.
La Chilena Del Covid-19 (Version Mixteco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb7959de5edbd6db277a404ae9b160649dadbfd3e897936660bf3c71a9e7305. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:49Z), 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/TCAGD2293542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c4ef5c1b4413b0d2be23a8d7318f0ca63cde66407a6b143e16afdd8bceee04. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:57Z), 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/TCAGD2293567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2583da953c019de27da7a7f8836ef126989a0fe7eba98641ec4cb346d664f3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAGD2293593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f607991d8bd053205445390ae43f1eb26ebe51a105b5c41f291d54ba1283a6. 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/TCAGD2293597.
Popurri La Marciana La Casimira y La Iguana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce2171b885cf1d5c72abbd021e036fa99cf9a736bf6c4272880a0e96203fb1. 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/QZWFG2384155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde5fba41e619e02b8fad13ce806b14d69abf54d58ff8eec6740bd7874abf45. 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/QZES82520983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab1ee6c1c0435049ba1a9c3959f2b1fb66dc8e892c43852099d2128bc2cb777. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:59Z), 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/QZES82520986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b61c00e189e15ec944db56de94778e5ad61c7afdf185f0c40f8cc639ba4e2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFH2571245.