Robert J. Dufford, S.J. (born 1943) is a Jesuit priest, a member of the St. Louis Jesuits musical group and a composer of Catholic liturgical music. One of his songs is "Be Not Afraid." His work is in
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 0x8d1272aa2b192e50004c78b91f53ebdf7d9e45d8df38bed269099cc9b2138050. 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/580f5ecd-2ecb-4a00-abad-f1d50c6e80fb.json and https://artists.proofprofile.net/proofs/artist/580f5ecd-2ecb-4a00-abad-f1d50c6e80fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tongues as of Fire - Vol 2 (Instrumental)
Tongues as of Fire - Vol 1 (Instrumental)
Tongues as of Fire - Vol 3 (Instrumental)
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 0x05d8b999dd65f4dfebed71a89b87d26208f347605d81b62e2db6fee9423dcb28. 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/USA4N1301658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf686daf5109bb1dc43b6d0bb1e6e2b109abcf8c47f5140a7d2aca4078e0a3343. 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/USA4N1302595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077ca6ed4fe689ef6c5894d011ab8b775e173a36ddcf5d380168f3e184062e99. 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/USA4N1301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9308548d79ccc54b71a82a0dc305391b98afef272b73e9559907350c20e45501. 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/USA4N1300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88275dc2403e19b4893622fdcef560d17956789b1d92686f0d878a834fddef3c. 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/USA4N1301751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e854e07da43cefe1d9653f74ecc4606d06cb4fee7e85ea24f9b92ebc4b2af. 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/USA4N1301614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f06bddb722d9b90ad0900a6961915284e09945bfb022d18854eeeacbdc068. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA4N1301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59249c9eae3d07af9e5faf3c41a6f640ab9ec68b68a3c55be8da62a01ce1e67. 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/USA4N0300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f39f7d07f2bcda4396d1f0d8a3905595ba97323fb4ed3176966dd3e8a03e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA4N1300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492502e03e68f4676ebef485aa6fb10d264441c2dd745f157b8493b8c718b29a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA4N1301463.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d38f73cc9b1eeee633fd9946149f0da492d7ccaa674fca5229ff95316f60393. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USA4N1301587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16428b3a63bdbda82c1ee603ebbd9647a4b2fe776a2bbb4519f757561442d49. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA4N0300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa990e12270d170d607cc94b190aa6c75c65e3f80fc0216b9e49100ddfa478ff6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA4N0300955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d0a97fb828f4b70c19d3ea0a1dfb9dc2b09873786312ad9c6559fc8b888afb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA4N1301285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f00b220d25c5e770e4c0c7a8531d034324c079edb946ded82d78963cc2acab3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA4N1301031.