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 0xaa2ad287b3dc739b55b6662e1fb498aa5f6bbbdbf5e4f58b646dab86af18691d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6997b2b-c866-4538-9d65-3bbc43a62fe9.json and https://artists.proofprofile.net/proofs/artist/a6997b2b-c866-4538-9d65-3bbc43a62fe9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Mormon Hymnbook: Prayer & Supplication Hymns Volume 1
The Mormon Hymnbook: Prayer & Supplication Hymns Volume 2
The Mormon Hymnbook: Prayer & Supplication Hymns Volume 3
The Mormon Hymnbook: Restoration Hymns Volume 1
The Mormon Hymnbook: Restoration Hymns Volume 2
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 0x07d13e313966c6bc0eb21cfcc5812a89201bbc0d4357842d8fdf4b5cc1a30b3a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ22B2082143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5478af6f0f16c0d86bb5e8e9eccfd03f26a88cb7660bd3e4ebfea2dc5e51e. 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/AUMEV2443456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c0d33b2217ee3dfcbe1a66eaae6f4d0ab7dda17a02c5d313efa28fccb19bbb. 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/AUMEV2443459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4376431dda6ce9f488b1fa89f4ab5fdf2d6c3d61fabfbad7123138ca2cd6e43. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:55:00Z), 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/AUMEV2443460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933016c3e4364833e4ff3dd80dcc461ba2e45852a18798cb2c458129ef9891d1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:40Z), 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/AUMEV2443462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e0993683231ab69af54c7567566477486ab1bed2c5ca3a36fb06e3b8798ceb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:25Z), 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/AUMEV2443464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ca38cb22a2e1a70d10562c8d91c851651195292f9e10d7406edd5002635cc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:42Z), 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/AUMEV2443465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814d27ea54a33d1e4fa661ec7e232439eb6bf523ce7571c0057ff20a0fc2bc6e. 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/AUMEV2451598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a4513d35bee2c3662a29684636623385b7f273f69bf7da8124816a54683d4b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:37Z), 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/AUMEV2451599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be8040022b78401e75e9b6de79da57e32c4e15a3a649f1a897c400b07f8ac72. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUMEV2451614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a7b68ba619ea0a86155727419dd18b5c4e0ad344206b9b3836d52aa6050cd5. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/AUGBT2423264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad964dc52af1932f3d872184a886f1c6d83eaccde087d97265ea8ab1cc81bed. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUGBT2423265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730287c4ac2d7038e6010c9e8ed6131ad52239b890a474fcbf2fa5f36a18803. 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/AUGBT2423267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d10ea2abd269dd989f4f966d624dfc55c3f943b4a42d477e5ae719ae485c10. 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/AUGBT2423268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fd31add188c21bc067887adeffa783747d6f8fb8a1f47979b156dc67d426d9. 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/AUGBT2423270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe143e98611ec2c285393e497aa3fdb555c6f78881e530747f2c780ff50292063. 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/AUGBT2423271.