thumb|upright=0.9|The Roaring Lion sculpture in Israel thumb|upright=0.9|The Lion of Judah on a Bezalel ceramic tile The Lion of Judah (, ) is a Jewish national and cultural symbol, traditionally reg
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 0x1558facfd8514d7cbce53414a15cec6944946a52b6c8615e9dab8178c24cba86. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b6a9b94-7788-413b-a638-906ae622da69.json and https://artists.proofprofile.net/proofs/artist/7b6a9b94-7788-413b-a638-906ae622da69.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 0x20a25c01f0ca3e44767a4fdcad8888c275b6c6595c36f3bfc90f7c28d077662b. 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/QMGVJ2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b4264516258fc1d36c6b408b59e6b650f5b10006d25e72ed5233ec42370232. 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/QMGVJ2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b22cd73e9499a3eafdc0ed48ddf748fcf781f38c25e65af4914454e460042b. 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/QMGVJ2100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f2193845202b335183f30f5691bf55f3821b6c3b53f9814d79df4b256666ee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMGVJ2100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c55c2b0eae6093365fbc8893efb8528424e04664e58df39748e95a462d7f51. 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/QMGVJ2100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd199e8781d2d060cf0964ce5c25f2268ff57a72a0a1ae5135743bf230a751bb. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QMGVJ2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf537ff2bc30c4f7174102b91341dbc635bb9ee7c1cc8d4d56d47b9da0b5b0df1. 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/QMGVJ2100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada7573882a9fa23cbbbb4d9ec3cb48e0db6700664d8f88911e11912d3aaac99. 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/QMGVJ2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c7150efef66a6d41adc56747cc65bf73bc7062094f87b2957527b3686d58e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMGVJ2100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c856c1002385bb4bed664a1535e3b4233fa17260a9b2448d8dce6af0163ad5. 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/QZK6P1969405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6a0c188797883d2b83ff26612822b134ff4553687370b6adbaf34babd8f30. 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/QZK6P1969406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc2439b0902c38114c3da69f50b08d76588ffb0720403233e78fed18bfe8f54. 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/QZK6P1969408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835653286b96ac40b39bccf26f0195575c801a68ae08b8ce9085fc7ec5dd74f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6P1969409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4f870308f0856d7a7f9b66c82254a4a305fe7ba6eaf0e1088e452496dd4659. 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/QZK6P1969410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94717c2a16938d4e527212120ea340ce7b3da3bdb5ebc9671cf3c7694089bd80. 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/QMGVJ2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2ebce653a34b531e996b7b4ec3df049f31e233235712815cc8be310ee6f97c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMGVJ2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1e39ce7318fc994437e2363dca0a17c9d7b3afa4b7e8d535ca621c234f4b4. 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/QMGVJ2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5bd850f0ae6e96454caed41df150ddd59f9835333b1a32c8c9c5032426dfe1. 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/QMGVJ2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1e39ce7318fc994437e2363dca0a17c9d7b3afa4b7e8d535ca621c234f4b4. 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/QMGVJ2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94717c2a16938d4e527212120ea340ce7b3da3bdb5ebc9671cf3c7694089bd80. 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/QMGVJ2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf58bfbf21767717a77569b8ef4de9a2a257e49e6e54d8cb7a4a697a7f7bd663. 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/QZES52085702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d826c6fb3615ad69fbdaa632350e77e96af53edd47aa94ee94fb4043b6e2ab. 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/QZDA52077507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835653286b96ac40b39bccf26f0195575c801a68ae08b8ce9085fc7ec5dd74f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P1969409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c856c1002385bb4bed664a1535e3b4233fa17260a9b2448d8dce6af0163ad5. 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/QZK6P1969405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee87c528c9797cdd3ac0a1510f5051eac2425c8a4b8bc7c9308e8f6b37d606ad. 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/QZHN31978553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecfcc2b7bdc88200347d2d77dac13e37b9ae43ca70a06a2e44a6da4020e1641. 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/QZES51967141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ec05226fa24d5b045af0d1baf0cae53cb3d108938f80b94a4b763938e76ef3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA51969635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b15bb8331f6b30d35ab7f9125993baefb04de6fcce3dadd25d8a6da53a04d42. 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/QZES51856773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39330e3a500edabfef463d8545ee2301b209bce7d1439f7f84a6f831bf497000. 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/GBLFP1887897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c5aa821e6ae60bf3db0eec71e01e84fd1c48fd9a5a05cabc6f9d4cf1f777d. 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/GBLFP1808621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3f875d02dd128540eb4b5a4c5f21fbc1083784b83c25efd0e0fde0ee46a63e. 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/GBLFP1808622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c2f2886e8934aaa993f2d07b76eb120c80102c0f8693b998e533459d7689f. 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/GBLFP1808624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c11795e08220676322873c02c550f21a39a3dc7ff2fe48e16f8509ffb69345d. 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/GBLFP1808623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989bb682032bd2b3136fbaeba776519d24de6ad340b4d7ceae391695ddff9ae2. 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/GBLFP1808626.