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 0xfea29f7b495f28bb185b7821d48037e94d9b39a54c4282d29aa0c9387ae0aa3d. 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/1b6506b6-c7d4-4fab-9add-bfe2bff42d4c.json and https://artists.proofprofile.net/proofs/artist/1b6506b6-c7d4-4fab-9add-bfe2bff42d4c.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 0x394cc87bc1c83990b0db5e22b74c2661672c85a01037081b95d5b950d178b8d6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US37G0401935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd901e2d26ee44da802a9915298885866476c463d9287e6ff5db01f225e7c8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:56Z), 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/US37G0401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51526f3746c7139249afdf16a27312a81ab6d05c5994d0c409fa41867a2a1090. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US37G0581403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3347f5ae52535efb56f78a13aabc94f88859ef75a0ff131de384b9a30c9a6c79. 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/US37G0782207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb993addfac2b9ccb64523e6356344f52a40c07dc13eb493e51f1085b60c355. 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/US37G0782208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e86847fa2e10109cb18c4ce1c855318b48057d3254dd4ec906a77fd9123dac7. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/US37G0883004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d9c0d40d9c8834fd389ba094abc586566a35685dac84179ffe63ccc34a00bc. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/US37G0883005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98caa9d0d71f83fe2b63fa3b78776ad461453047da80aba2ecd986b6bbd30fd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US37G0883006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ead3381536c267d72fa4efd9d2de03fb420ea6613a04970529c9923498ffb. 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/US37G0883008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7272fbfa2ee0d79575619dfd21f81804c623bb4a367f5743bb43354708a48564. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US37G0883013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f642945ee3093aae5319bb599ed6c5b683e9e7ca9fbd349c078d9d380833d. 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/US37G0983511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47891d8297a064d4e0769108c855e60c09a9cce932c0a0cba312581a490cd9d1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US37G1184405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957b2aca154f9515f61a19a597a2ade075cf4c4b69410f49509350be9cf829e1. 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/US37G1184408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ab3e9d069838f6e0445a69ba4fbd4f7c251c116d5fe194eb1185e4ee29b9b4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:21Z), 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/US37G1184409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1cb26b8586424dd1b492c2fc28caa27fbc7f9111751abe428586a3c58c268. 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/US37G1285201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a82a8d7c159c95f4bcb02fe67de0133328e292c6e5215ed96606ec2a5bffbf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:22Z), 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/US37G1285202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa619419259dfe581c93cc30aeeec2aae2c3ddb085ba5ccd3c1894297e145cc84. 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/US37G1285205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1eb1ae441c947d7a776a129e00b1c8b8face533c3fd798cbdcfd75df30cca. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/US37G1285206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696087c025882700b7f027abaa121496b17771ff89e0a3e8978b78152e07e254. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US37G1285212.
The Complete Recordings, Vol. 2 1949-1952
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7a0ad188edf6205f0ac3a746fcf773a19e2d3a7897a8599e9a1937d03f8828. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US37G0782203.
Gloryland - 30 Bluegrass Gospel Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5668d7bff4b3cbc3269a561b363a23c217191b97314a1c31dc73f310ff9b3554. 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/US37G0401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5b28d0302e2bc62f7644c732d6f61b3302fc6c4aa155cd0f28a0876c498992. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US37G0580611.