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 0x84b5beb094788b558abcb1d716fc091a577d9bf001eaa53bae300998690991ad. 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/3fdcb20a-f1b0-48ea-be6f-81c086409eac.json and https://artists.proofprofile.net/proofs/artist/3fdcb20a-f1b0-48ea-be6f-81c086409eac.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 0xf15c6e98c0786e0d52cbee2d3e85fa9b5bfca7671d4691bab7053e1d53865b59. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USDY42288842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91ba573807fb566a5ca188af254e3a97f096aa1f1d0206645e7ef31cc6c42db. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDY42288843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e94aca78fb8db772f19a7fccdd4b8d8429407e772debbb22bda96526c5bfdd1. 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/USDY42288844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa737c996f0115ad7d2d7be925bbb146b93db18df174fe6f07526aeff456a69db. 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/USDY42288845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a92bd68c1016d857beb4e84ffd6b43b76343f3a905be0a09892107bcfe42ed. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USDY42288846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc0e62b0d7110dbe136052bb3ac473f01903efd12c4d1159b7034e1ce4cb517. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY42288847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc28e1511c3431572f8d6d3177334183b45bdfddbefbb83df12f0d4f9f7a91. 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/USDY42288849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfafc51f1518d084e4972b7147db94a82ba7bfa844aa5dc03d361c6bc78c2630. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:42Z), 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/USDY42288850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a4246e1952011e96ae2209ac1bba062ce219811d9296230a568a22fb176a9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDY42288851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbdc687c0e18441e082ac909a21855af09a3663427dfe57c27340aad938e22a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM22232118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d85ebef10db0eb8b6c987af5cdc551b013d52c2e9e7ec0140556c15264529. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM22232120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166491cc0638fca822c25feda601bac4dc70927e271b59fc942a16d53e959022. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USHM22232121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefc3b11cbb35d25cd16762cbe8492bce0188bcb754d56947d9fc9769b7ff114. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM22232122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54d8d4d3c11ff3afe49a8e5dbb5f3a5cb0950718a66e53fa6cae513ed5123ce. 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/USHM22232123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb299f67869608a148fc9df5a7054cf812949e1ec1b17f6fc56439581a17b6c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USHM22232124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7827b837d27dda3bb983b63fa8302c814096eff7a508aa7fb22c258077c93a4b. 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/USHM22232125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce843c3acaead01731430edf9bc9f4d4a1dd5e8d67e2dafa9f47a35473d8e11. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:44Z), 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/USHM22232126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef16825f47a924fc5f35a04cf002a77d5ac1ab808b60bdcf5bdec07251881fa. 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/USHM22232127.
Calming Instrumental Worship: Hymns, Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f721236697aee8bcf2046be47de122cd87ea680f57ddc8c1f5655123eef7b0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM22232152.
Calming Instrumental Worship: Christmas, Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53e5b543d58c3e3887e43394f87bc69c932b6373197e4692630cb77f58c09fb. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:44:03Z), 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/USL4Q2294515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080cddba0828abc78889fafaa9542645f46ae027a1d88d78b52d6b7320ebf514. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4R2208887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7723aced0891d5e3ceb4f943b9168f8e375b0afed072142a077a5bf8aaedc52. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USL4R2208888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b07ca26f6524a4f49527591591c0df48a023c4ac2666829eceedb734a3c584. 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/USL4R2208889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4c7160899cea76922670af97c2b25b92a979c80faf11d5a85b53422b998cba. 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/USL4R2208890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ee3aaa7c2887b4be74f7a97e8104708a1ffff887b301e392cc7ee187af08c. 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/USL4R2208891.