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 0x69d5079e47f26206e1f79db542c0c5fe358683748a7a3318bb52dddaed4d8318. 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/dc79b4d8-7e85-489c-bc45-c41a98ac7fd1.json and https://artists.proofprofile.net/proofs/artist/dc79b4d8-7e85-489c-bc45-c41a98ac7fd1.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 0x400409880b3be99b58d38c8d446dca3a5405bd119ba648174415f9da3d84ab9e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZTAZ2285308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6524455b600571437ec003e231dfadecd5f367c65ffbeece9070507f268da97a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAZ2285309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130accd8e8fe656ff5ef64f7e0b23d8786503ca94fe244218618f1a7ee0c864e. 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/QZTAZ2285310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86df40ae28e116c08775bbdcbd17fd513c04459d4715ec118a940214a721bad. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZTAZ2285313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c4afb8b30b8ba17623dac285a2d44115ee8186225c68b89c5c90231fb40085. 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/QZTAZ2285314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91965d284674570dbeacf7f5dacfd5134328942b0bda3f52425a72e69e8b575d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZTAZ2285315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e886e53e889e40f0fbb5cf4d02fae80335fce0b44bc7884507de2344a9d6053. 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/QZTAZ2285316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d6843855dcc574c0ee83a819bbd2753a23160ea1a9a88d0826a68331d58113. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:20Z), 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/QZFZ32051421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b6750afb2400607fb55bba1cba45631fdd5465875e1b0348e83a82fe7d149f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ32051425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0315b97ff82afef271d98e85682aec221c73dc8afd954d3f995c6bfdb64e6e4. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZFZ32051431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b50e8e0a2b398148e38e8c58b6a28b51c8b287d8f71df3d9fad6b4f2468bb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:31Z), 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/QZFZ32051428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e473db6d5b1ddea4d05ecdd100ae830f4b904200ee293ca276a27b956be4f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ32051424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c7342d4090a0b5f591536fc0f9b78e7c616978f356775d7a49c47d97ccffb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:40Z), 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/QZFZ32051433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c245eeb0e4ae9101c6abc7048268f9571fb60536cba107fe6a2f833156266e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:27:42Z), 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/QZFZ32051426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08fdb8833fce0bf93aec2278c7830a03040b4735060d229841455a3e4975c3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32051427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4162c90f1b52c59f73ac8ad5e1148ccf5d3b0931ebc732c47e6ff32350e25d6b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZFZ32051418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcfd6c405e89f64cfb952cd85f3ebe8b59cc1b8f47d5a5768a5eb0b8e97adf2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZFZ32051434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f876e23fcab4d2f92476f9868f096ce88db85d2f8fa0e8afaee49d4ed205b. 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/QZFZ32049440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92376d87a492c3816b0fa56110f0f93186133b1c028da4e39630958e68bb06f5. 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/QZFZ32049441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348e9c8b8f86924f956bb1a72541745e55d069f46a10623f104478fa0c7559b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:15Z), 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/QZFZ32049437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928fed29f80611ad4c4cb7b35bb712481f192216e88d124c7ddb0a1d0accce70. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZFZ32049436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bf02b5efe2d442a2c9eae9b7ae2f0580ce6d18c18af376a433209049b4ac38. 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/QZFZ32049435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eb2731f813b8f9de7d15f7d858addbdd57d27dbec12fb78839376ea77050b2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ32050898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd90567faacfc056792f50f50ffe702ca4bb8708521a3d68fdbdfa590c90ef1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32050906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9058525c8dd742ed7554efc5da06c9c99fb45768a2df013cccb4133e225470c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZFZ32049742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51d1a365d9b7ee6837ab99457746179f720c34bb7f05c92ad2cc9e0258da406. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:25Z), 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/QZFZ32049746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e081b5406807414c319e5daf286a3bf5602fb6395fede5e0ad042470d68812. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFYY2161973.
Marchas Solemnes del maestro Manuel Antonio Ramirez Crocker 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349036f03018dbaedd5751ab5bd2aca0625f8baba5f4b173813b233fec813046. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:59Z), 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/QZFZ32517214.