thumb|Dogsled huskies at rest after racing Husky is a general term for a type of dog used in the polar regions, primarily and specifically for work as sled dogs. It also refers to a traditional north
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd140d83803ee9d3ae494b8f3983ca400b11374c27ff676b54828380957ae74. 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/bd063e89-472f-4f54-a3ba-eca1ceaf75cc.json and https://artists.proofprofile.net/proofs/artist/bd063e89-472f-4f54-a3ba-eca1ceaf75cc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07457ea7e7f21fa7e32a9522666f6d897083857af4018144e80edc6490b1337e. 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/AUMPB1502403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b070ce57711a5ed23fcd29ec1776dfd6ed5566dc24127400da1b445b9be6f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMPB1502406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124512730ddcceff29ff1f00f57bdba947708d31e8221744b82983fb271be150. 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/ITX4M2200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247b5d896b29162f373eb5447dbddfaaac76070ac57850f3f58fc61b1704285. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2227277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4345dbac6fd9c4a6e04d30ad791a05b42c2a64e76c980df602adab831dc93007. 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/USA2P2139288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dbfbfd803c45fc8b205037a1d8f31fabf6e8d3f538e86f542b3592661a14be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMPB2109002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715b572f154caa42187cfb3e7ce44f678579168f3738e7747241f5b9afa485a. 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/AUMPB2109001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ce8c850e3be64d2154340703de5b6f1ba492503f434bfecaf99e9487d4060. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMPB2108706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd77f5a1962523d80aa53c3cd3890c732cac84a4f5bc8e15899c35c18d8b89ad. 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/AUVC02005810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6886bb3ca0bf1e736ea8f184c37525767df97590d9f107c98b9b49b5a893b093. 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/CA7C62000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332603697a71904976dd9a784a1208a6bc111cb76501579aecd401e1f349023. 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/AUMPB1805206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd89b012502756e34c7331291888317898f4295f0fe09426471d6d5cd5e72e58. 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/AUVC01892410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8673d167ac3f8fe23d1f3fbe5b3bc7ee1261cb71c59f9bbb989afe42a3e3f7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:29Z), 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/AUMPB1704607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cee667ea0b3ce83f84d39c59b71a7c376a4fc826a65459e9f9ac245288cdb5. 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/AUMPB1703803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9683fcb6335fddb6c1402f2da57f3d5597388d8477a52a219d01f4e41b703c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBJAJ2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ffa4ce0fbc6856a67f27dff31c0fdb677ea77806e8085b36fe077050de47ba. 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/AUMPB2412603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe172c0b8fc7c735d8c95f7885a9384ae82bba1e8c39fc12a2a4f4d50a7057ea9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMPB2412604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52c1433c89d2605804da6ed6e697f8c1276f02a6bdcd0eca3eb9d6cbb606774. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUNV02400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac2ab09aa8164391af68d6b03b2762b21446e13995b9040fac311aa677eadeb. 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/AUMPB2412503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b7bb7d2e607dc3d27dfbc867bd682decf3483d0fe63f65ce6fd56fe4a3b3ff. 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/AUMPB2412504.