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 0x225530307226cd54272e957cf6d3c9a92cc5960fd91bc3f49aef7813b1498527. 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/b0556ed7-684d-4163-8e4e-e5158574a79e.json and https://artists.proofprofile.net/proofs/artist/b0556ed7-684d-4163-8e4e-e5158574a79e.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 0xc8dbde057402f02790ea4d315dd85a09fd672a26e49162e49754ff4f913072b6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ATAJ11700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd8aa2e1257a93ec815607ac4698ac73a5386c212bf38a666b3f44ca81b2109. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/ATAJ11700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ad3490c9a767beca1ca34f582f0d7c1ca9d70f85fb3271fd7b9ff452000bbe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ATAJ11700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e52eb425a525ab3f9d354bb8902c9cf59ce7455d2f9d20dba4f0bd9dda9118d. 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/DEKB71975383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff32c8ee95336189904b18619631d497826a6d51a766c7bf24a1a5c588240af6. 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/DEKB71975387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04273bbc8f463ec6802d65c4d9adfadf1fd6258fc5973311d6f144d896c8593d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/HRA041991690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13449004c9d385b5b31370490582e03699567afb91e3e569f9ab80a186a9f0fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/HRA041991694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab2d48ca5f83b2ef371747fde41023d6f444eba3d850d83f6943d55798419c. 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/HRA041991696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e1dc660cb08359d878e0eaa0b11aab7889b7dedac348f56f3f310bcb01a37. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/HRA041991697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb0d05e76171216baad1ebaeb30912fcb1ae8a1409c4f940749462daf1c6d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HRA042092617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a3454300a2692a493963b8c31568f7ab03fcde7e22450d67ac93f1d63a560. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/HRA042092619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804d35e7b15d96f5ea2de7950c531e0f10383ce549224355a3600f06ffccb69a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/HRA042092621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf51f30d573c2690e355cb3466b38a493e6e0d636e9f3dcd0fa376a0676369. 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/HRA042092623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7881995122eea11f7255194b594ddf259131f0671febc80be7573cc9e8191d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SE5DA2017399.
HELEM NEJSE LIVE @ RED BULL SYMPHONIC 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caaef340a71cfe3f64496a2473395e813c564731fb8affa4ca51f3962856b0a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATAJ12400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd7441422c0f0b6e224bb301a5585d812ba499fdec6408f459a4b6ca946ae19. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ATAJ12400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd294c54b897fa0553ff1923c0024c3c43405bd5924a5c3d39d51acc5a8119361. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATAJ12400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5a1fa59b86994ae6d6cdf71f2cd7ab617825158b10555cf9fe8c9a489aa918. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ATAJ12400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33641b99d9b069eed12b92e6aa486b9035972e7121f6cbfa6886fad8224218a8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATAJ12400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1801d880e2ba279b2a5b2c3929760802634fed7684c60988f0d70bd529855838. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATAJ12400285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca43c3eb322e70a08ee5d699a6d6bbf541e9d107e1fe082dd665b426bf92b0a5. 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/ATAJ12400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819eec9c1c838b59eccf1c598e321770f013f22404dd49c87beee3f0c4e9cca0. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ATAJ12300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8307aa19a7d5788f9768f59a28bd8d83dbd862fc680e252a59b217ed8aa47699. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/ATAJ12400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ee3e52bc66e39c3044be896177a4c197dbda50f410eff73913ef27cfb30268. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATAJ12400288.