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 0xc8f4bbe13ad6ae23975421e183573afd8a4f79c7c0387c628f1011028b4a72c7. 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/d784a06c-50f8-4962-b954-c34a95c4cda2.json and https://artists.proofprofile.net/proofs/artist/d784a06c-50f8-4962-b954-c34a95c4cda2.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 0xaac8b18e9115f1aea50857d5e9ed76c8c31a05c04257f1a32058d3c0edf85df5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBRH31200745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee374ed548ac16a96e8575a5dd3b0fd234304573d56848b7d4e0fee7b7e2018. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBRH31200746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ed8c20d625ba516f189d0f0aa0f6b6ce2a5857fce995c91c9ba31fe57d1dcd. 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/GBRH31200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ca897caedfe8e97b8d77c77d70901e482a77c465c81294f60c215d77c68350. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBRH31200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05bad0b3fcf1599e0381082876cbe8a8bdb6cb21bf5071fd362f11a85acfe77. 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/GBRH31200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e740fd96c2d15af34fc30e0ec38bba21c958800c114ba2d2ef13e41fa371bb9. 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/GBRH31200839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9170af31dcb1969d3a0c7d07e29daaa2d47e1faa5e0dbcde022d29ef7cdd95f. 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/GBRH31200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c6d6f220c95188a0f1a12ee7d102f6ef17f38d7694e17a7197b68c7a9b7fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBRH31200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1178c58e4576b25303b0bf43e579e5f9b052ffe92fbfc16f835719a6a77004. 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/GBRH31200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a60ae2856023467b4e5a8e4fedb1226d62ccca4ff121733e473f5b98bb558f. 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/GBRH31200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac8b18e9115f1aea50857d5e9ed76c8c31a05c04257f1a32058d3c0edf85df5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBRH31200745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13295051974668292fe63eccc4a780e0f85f93288bd70f7bca0a1e52dd5ee0af. 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/GBRH31200844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a300d80e393789876f9de19bfa447489f0dcadbfdb24c67f8a518d6eb79c58d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBRH31200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ed8c20d625ba516f189d0f0aa0f6b6ce2a5857fce995c91c9ba31fe57d1dcd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBRH31200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380f3dbfc6f0c06a0f57e856ad0263e77f8c9947c23d7c795e3e15f61e8537ed. 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/GBRH31200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ca897caedfe8e97b8d77c77d70901e482a77c465c81294f60c215d77c68350. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:13:37Z), 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/GBRH31200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05bad0b3fcf1599e0381082876cbe8a8bdb6cb21bf5071fd362f11a85acfe77. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBRH31200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e740fd96c2d15af34fc30e0ec38bba21c958800c114ba2d2ef13e41fa371bb9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRH31200839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9170af31dcb1969d3a0c7d07e29daaa2d47e1faa5e0dbcde022d29ef7cdd95f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBRH31200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1178c58e4576b25303b0bf43e579e5f9b052ffe92fbfc16f835719a6a77004. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBRH31200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a60ae2856023467b4e5a8e4fedb1226d62ccca4ff121733e473f5b98bb558f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBRH31200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac8b18e9115f1aea50857d5e9ed76c8c31a05c04257f1a32058d3c0edf85df5. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBRH31200745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13295051974668292fe63eccc4a780e0f85f93288bd70f7bca0a1e52dd5ee0af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:31:39Z), 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/GBRH31200844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a300d80e393789876f9de19bfa447489f0dcadbfdb24c67f8a518d6eb79c58d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBRH31200845.