J69 may refer to: , a Bangor-class minesweeper of the Royal Canadian Navy , a Halcyon-class minesweeper of the Royal Navy LNER Class J69, a British steam locomotive class Parabiaugmented truncated
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 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 0x40965c9ec25c48f28be1c28b51f54a247b1fd0c779a6b7780e1023e528ad1d03. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b47953d0-9822-47b7-8b50-a06ff9db8355.json and https://artists.proofprofile.net/proofs/artist/b47953d0-9822-47b7-8b50-a06ff9db8355.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 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 0x70b943980ec5f882c3c4f5cbdaac26f3a0e2560aa0eb1e22e36325a4e4b75639. 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/GX72H2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103986501998275dfd2dcd77f7ffe4f2d19220439b232831c022e893673ecfd. 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/GB8KE2206900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8395fb6c4248be093a1f921838506077039860cbfdf4134a9a6fa157b9bd3690. 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/GB8KE2153614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d0b1c1093446fcfde2ac8f2efb4f80e00366a734da8cd00f1dc29997dbbf4. 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/GB8KE2150860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbf924220200e9953d20e3dffc2203e7f774d2dab3d55168193fc41118e2aa. 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/FRX201978035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd632e37b44f7aeb075b43594651a5ececaf85b9e157f39c19b71167ae53d6fb. 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/FRX201978047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83354090482cb67b95f62251fa76131e55862424cf77e1b8299ea4b6e96aea4a. 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/FR59R1803517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ede2bd908a430aa9b140bfb052bc771848fb456833ec4d3c56ce204792e21. 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/FR59R1803518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffac0de6126c19cfe01a9bb60862b4db00320a3104152f5043ed70f6032edaf. 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/FR59R1803549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2ddc21b447841e383a9e5f62d5cf155beca1267e7e5c6712048f4272340fd0. 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/FR2X41853634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7395120f1497fa7f575a9e8e6ab0486f1313268646cd8f635b7348c66a8c9784. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762188539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46f56c37262115d77e03f088ef0ce00f300ff69e7d1bc3f2f228791650f58db. 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/FRX202295109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76566f06aa2b2ec5b9d3ade5f766a5c8e85a079ddc2ee8c195e5d485a79f50d2. 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/GBLV62003418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed93aa0156359836dc36a12d32ddf35c5dd9eea716d79e4cb4b9e3668b5fb81a. 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/GBLV62003422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf972308089b37a940c8f6bc9401a2dd312e3e365a2aa7fac4389b3a3bcfcdc07. 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/GBKQU1853138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49ccea3e8aa9b2610040bb67d7842cb28c845cc8a55283ed518d11d20109b8. 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/GBKQU1871935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f25632c119c00384237ada5a8179663729b7c48f48220a2b8b552aeba46487c. 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/GB8KE2208472.