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 0xc54695e43c1418bc6f8b5fda2da7ed46f60b37ead5b537d24df1d261216d4cbc. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c05998a0-e4bf-4f9c-a2da-ad7c7edd3c6b.json and https://artists.proofprofile.net/proofs/artist/c05998a0-e4bf-4f9c-a2da-ad7c7edd3c6b.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 0x9431daefd4b39606a51bc3a05ce71a7deb78d957abfe84b8fe447d80494586e0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNB2157928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004431daa84cc42bfe944512dc1a551126bff1ebff73846316aaf201701f4a06. 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/QZHNC2123867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4abec07442a35a10a6489c7c8349c5679efd9f03eda369d8f241be2defa15. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:23:29Z), 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/QZK6F2170541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea8f1df2188c56ad75f8b042f8400a415be0cd930ae550154f0dee4223aef31. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZMEM2150693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702993d27027d8104ed77480e4bb5ab258bc8bec8f714503386ef23e03d6c6cd. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZMEM2148787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1b73412978fdcd982f622239434ee2f9a1eaf8f9bb48f45bd809f6474d32d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:00Z), 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/QZMEN2146099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36afb37df929dfdce397f033d391c61fae5c40f3ead985cddd367ffa6796e22. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZMEN2147208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2bee28b7b51651ce87727e609c1824f4ba61aeafef89fc5562b951b69942ce. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZMEN2147209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a4988e46b97a0e2083201efc905916774afecea93aebb8dbb00c5db9acc97e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZPLR2147524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfae7babbbcc5c6dbfed0047abeda50f1e2c94cf9112669612d6d1f71d4676e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZPLR2149421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2225c0c5ab572d46bf1e6a361cbc2c7a1a18d84ebace84a2163a28070ecd0a21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPLR2145922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd5e7e5eff3c95458edcd6036c96b623afc419d0eaa82bed87f797fa47775d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:24Z), 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/QZRP42107141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5341b5d8b48f7587368c41d1e15105aaa824443fd17aca89305423e523007c9e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZRP42114306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596766041108fa69e386472dd9a8a3ec5083d40286737d3e15433a4be7dadc42. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42107140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad548661536bf6e7aeb7a3ea62ae2826b1010b83363e3de27a7caee200f4f9. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZRP42105550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a03e3c732478f700501841174e2f04421042018eabc71e016e5b0079dba6c17. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA62273192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafebb904bde5b0316de9234c0b1fce1aa36fc6df043866f7b2464a01e5fdc404. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZDA62216018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a8330525db872502abaf2beac51bb9413c31c4711f42d9bd47a73d24a4666f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZES92270966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefc779414e741abdc881bd798f325cd18cb06ca6c66bc6c5b55c82d54e3d871. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES92290348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dabc5862721d8033050cc6da829c56298f464233fe10da9ca477ab1bf9ece51. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZES92290346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f52ad968fa52665886d66e8496099b2b8ea79261a3ff1dc60ec335d279c25c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZES92288824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d6ed0bb67d5105c6bcb3d08ff37b2408b757dfb5f8ccbf8199769d46e3c4a0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB72288787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54364c7ea8a1f1cf90d6a2610fb65462cfdfa8a315b813ea776ca58bda07673c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTB72278436.