thumb|right|upright=1.35|Catholic missionaries in Papua New Guinea A missionary is a member of a religious group who is sent into an area in order to promote its faith or provide services to people, s
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 0x4562be4c74d47ba231ee20cc392b139007c69bb5ae96068e4230a121ac16f7d4. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7c8c3a-3a5c-4c02-916c-cff8f11078fc.json and https://artists.proofprofile.net/proofs/artist/af7c8c3a-3a5c-4c02-916c-cff8f11078fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arcaea Sound Collection (Memories of Realms)
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 0x65f4de33515623c553103a54aa99b1b8f50e13d01efe19ddc5516a84094c37d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFM2172856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc191e8ac143034afc01301d4d0177133dead8ccb70eeb6d67ba610f4cd53b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFM2172858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd48fb5fffc2106532b5b67989ab40a561de0f1ff47197082af290c59a6f32f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFM2172862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992dd98fed63f8fd54effd64ad9d49108f86326f4a6645ac30723c1263a81399. 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/TCAFM2172863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbad71910138db2d8e834d330cc087cbeedf549064162e920a1a939b08cf12e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFM2172866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e1047198ed712f3915076fa12bedcb0d24e2eaaaa7f7e67f64bdf3f796b47. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFM2172867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0119dd0f6d06c100a473ae2ba0e08937414e9427f3b7aa1acfd6cff2f74372. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b23fae02348aa955dd55128cc4002d1a78e9529638ecef693eb83d493b1e2a3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAFM2172871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6083154c42fd4ab7ac115f9d1f0eb8648d4b8fa1d35da2b2707fbff5765f8df9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFM2172874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc99405046c4178a034eb3b99db32ccb5d3149828f8a4e7fdbf891ac99b059d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb130e1d01d47d78a7692ab69edcfcf241d0252e175eaf90a0077ad06721e7593. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63287c18f86a5369d15f046d44c8c0b74a60f10d62ae861687f420f7452d57e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFM2172881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e357ff2bdca8a14b8bd9beb700a6ea75b31e5968b0449ad82d9539dc32c3ed9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69e67bcc9c70b0824736aa61fd18668fc24712b067247785c8148b018024802. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFM2172885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d819dc620213becec64ed57de2b42aa0f27e095fd7ef8a080d3f32b138f15bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477cb8f9b0c7abb625d427c2487a2d83891503d09b6bc3156dd1e05bab95054d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee810c6aa898c1eb25627845ae5d2cf8130a455dd21fe2085b085baffdd9a651. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFM2172894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc030566331affe975822f0b81d851b1ba4f9835efba02d1b544b4ce202d7c. 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/TCAFM2172895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fad75afcabc27224383ab5faa87594fa1326ae6a7b866b9b60bbcf72a55e27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70e64abf1115bffdc65fdb52341cdcd09479847acd0f9b65c0cd662fbe9dacf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFM2172902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8fe4bc69dba7c2227b0c1b84ab5ecac7140996bddf80b0df085405c28e853e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a02f1edb140a07f8a599b37695a1e85ca4b6349b43e658fb2ce003eeadc4124. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9743021abeafafa18465352902291ff345b17d2da88bd9178621fe7af8edfff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFM2172907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f8214229ed30d3e9c5b04e87551bfcdc6e0ed132f186798c34bc53cae0ebb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFM2172909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc284ceb863da504ca7a64e49f0017545173e7e4c83545942a741a65866d36f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a1b5718aa67ee926aabc26cd60562e234f9863e0b93f79933fb25ad700c2a. 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/QZES91976797.