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 0x491b90b859d18061b9b179f7f091fbba9804f4d30d212408f122f3cf6a2ddcd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2169bfe1-8d6a-40d1-8d05-6060a263e25f.json and https://artists.proofprofile.net/proofs/artist/2169bfe1-8d6a-40d1-8d05-6060a263e25f.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 0x03585febf1679d4fe0a275189d1360d0c45dacde687529ef32925f4409f422f7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES82335714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f330e4eefe6f824fe9ab53c01743c7516cdb0801a08b42dec1c44f5c2d65352. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKZGC2301196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3d9ca04c53b90519202bb454dc230849b1e54ed4bd30711dac405b55ffbb64. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFR2353946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24f4516fe3348b071a08dcab902fa39ab4e488cfaa8cfeee1d7e65992fd25b. 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/UKZGC2402478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d18be787938ece4595c3dd7dbd6e277c4d9530943fa6992fbff4f7c217bdb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKZGC2404032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c0ab077f1134898dcfaa55971a66b48ac4f6a3c4130ce64a3000d911bf65eb. 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/QZHN52408215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e12f87ca6b95c01eeb204aac9baf57d12a84617ee96e766583fd60d78a2a8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEQ2453501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4679404431f41e5b2ab47741c2265ef1fdbeda2e9c6e5f648c5ed29e1b82011b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWX2410555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4679404431f41e5b2ab47741c2265ef1fdbeda2e9c6e5f648c5ed29e1b82011b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWX2410555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b2f8f7bdc38c699e490381b09eaabc1e8e0b63a41aa969afde806ff15a3298. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAS2423628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e12f87ca6b95c01eeb204aac9baf57d12a84617ee96e766583fd60d78a2a8. 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/QZMEQ2453501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761544e4e564ac42de51053a612a26c273d86266a6c640e67e336cd3bbbdaf47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAZ2481613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d59c421718618809020c34f438d0b778598ea6def2611a5611fa1a9660cdb3c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:48Z), 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/QZTAZ2481614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ce149db5dce90da3746741ff00916877e72587dd4d0c07e3abbbb9f40a328. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAZ2481615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3d44fbd728c25e7cc743b7da77f13dd799cef6bcbf1c5a6f7627f9400eeda8. 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/QZTAZ2481616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf363555dd4323f7a87ae63e1fdb4a96ef8ae6204e7a2a705e11724b0a4dcf589. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAZ2481617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa052c8fb34cda801fb3cf6ba0fe80e9ac00db4aa05076e07e1e51597462acc9. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZTB92402617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae92724f6018e5f4e95e4deda33d239e2c50e8532be3b35be84aa4cf3dc4aea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFG2495575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098a2eb4296a35e4e6e9217251b1882bc98427b093954db14088e60ae857d87a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFQ2406374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b25f81d11301736fadd4be5afe0287c1266ed9d8557c82312472727b5151c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:34Z), 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/QZZ792465563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf085cb715b45eac304f81919f9271a981ec5505ff04209568e019981fd00687. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QT3F22424961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22432b1a54b058f1a53191d90274bbbd336544abe3a74d7d9e310ca682399a1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN42528338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda10db5a39e81097d8d6cc1f2461527581f56c065c389adef5211deaae96b8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFG2593129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea78295d0b1d1ff82386f89d33cfb976d61e389c59288436db0d576189aab1a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ762594744.