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 0x67cfd7854032c5d5833ec3e2b3016debcd3da11be38ddf1da9e679053f534ceb. 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/7bdcf5eb-6aba-4fe7-9527-155d5e7f2166.json and https://artists.proofprofile.net/proofs/artist/7bdcf5eb-6aba-4fe7-9527-155d5e7f2166.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 0x456a3a990d5558d2d603fba97d5766a4363afb952a05112e524e830b661338ff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:51:59Z), 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/QZYFZ2397967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f085c3390005d6b86d1ab2d35b6ff2e6c8b769ef7abee9d216745ca6f18b158. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZZ662305991.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce84229426959a30cc0214d69b8e3a5223aafb15f71f5ac146c17837e05f450. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAHX2465448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf8b86b6f9c54e21ffcc129a9a753cec12296d3477c61d41f11cf5b705f6f97. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHX2468381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd57b6b20dea4745ef462c9ff0b45c2c372eb23c792bd9728f9d53f52bf636. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAHX2468371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af690a570a70c6abaf977b512b03b0e15d9390551c9d2748e72dc3d4b0b2cd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:34Z), 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/TCAHY2437122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa5c5187807522395bdfb2ebea53970e621915fd6f7fd12209d83729b641d2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAHY2437129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8392b9c7e96ae878157d0d04ca7674e31894f1922fcc40d75eb42de50b1a1d3c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHY2437118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e9850f4ddb1456011e5412274d9a00b62df83be1057c33f2c1f031b312efb5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHY2483784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113b218f61150073cae491c29c47a212e5f1f0a1a5b8fb1c19b24c0a37b13198. 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/TCAHY2483763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bece12a67e7dce8a1ee34b1632b9787857bf782cbfa9ccb01d0e16f7802c738. 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/TCAHY2483755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea54ec1281051378495b2987b6b1231f0272e2194ef356c1b9e90ac03378b8d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:19Z), 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/TCAIA2404848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cd42ca7ae1ee76ad56d7e3f1dd35e9ebf2fee5d7a9ce4e8e3e40fe618c9c1c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:26:19Z), 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/TCAIA2404871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de95fbc4780e53a01a5935be871906108d520934ff150cdd2d9433d1529efd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAIC2433756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0437b3af283ea54acc7f9d5809cf46b6d0793cc3ace54dff665f524871ffc7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAID2442441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d760cbfda9f043d07e98585263785af64dd0970be6e03cbd5eeb66fc04fdc2f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:32:36Z), 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/TCAIE2453880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f9de76f9f37344f444eb0185e10eb0184c0f8ee20a0c186b1f9755d1a691f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:55Z), 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/TCAIG2475172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe849c6918d0801351a90e4b554ff13aabfc61c9aa85eae3d89e8d04959c256a6. 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/TCAIT2497203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d49f0e547f6a3f3c3677cb05e2685e27b9e48b7294e2d928ba890dcf0c5d5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DE1H12500604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c91612883f48158399095ccbb1e5d94c8d1517448ad3bb218a858f4e742a63d. 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/DE1H12500605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed68599548a4b2c760eccf3b67370cab8a3edb5e99abffb914d80e7fb580255b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:55:21Z), 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/DE1H12500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88fdbe758c14e56990a491d946c5b93db7d2013ef480b00c5e1d98a26ef1d3a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:10Z), 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/DE1H12500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c4f47ad53fb8a83748daf8b70bb65ab973f17be8a314e01d8310887c591030. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1H12500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559ed5d0fd91ba1cdbcfb0b9c7c3433cc6fec441af15ac60ab2851d879df65d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA062540656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6042ed236336768386a5f627124d5667431fe1e27ea005ef1581696a728acc43. 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/DGA062540532.