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 0x0c8bcf37fa666e0f092424056778b556322cc955999f881cd4c78d409922d6d3. 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/0119457c-aba2-4507-8b76-32811f6865e2.json and https://artists.proofprofile.net/proofs/artist/0119457c-aba2-4507-8b76-32811f6865e2.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 0x303898fd21a56054fd5d49aa4d5e498180887eb2f7a5f1ead6ebdd0597828854. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKPL1947553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f83d5d7a74ba5c95043234f2b62a55318c53dd392769227bf93dda7d2f7bf5f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:57Z), 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/TCAFL2125346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf909051edfd667c346c860fa9716d767f770afb9e1977c1f4a4cba893dac103. 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/TCAFN2120732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd920c7fbb7e389aaa40cd37064d79db164aa305c0dcdc90b2bb7414272b8c7a0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAFP2132593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2cbfc1faadce7a461d5a88d5123620c8086370531ac4ac8f2cd3c807a07b6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAFP2177905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cb58ee6c69a29c7f14cbfddfec97dcfb2d68c70a2ce91837148acd6b5a0b99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFQ2146882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f48b0297c8a447cc6df23d631a9627ff7ba2536bf063833008376a3c8ddad7c. 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/TCAET2096939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551debefbd257049dee5b1f7c5237dde743d9498fd58bd53245dabd6c041cb7. 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/QZNJX2102252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd32816d140cd9a125f21377852d38c98a8a61f1cea7c66708cdc37dc85bea0b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFW2193512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047a1534712c81885593d3a2278667f0417505a129856fcc46062b5125152e03. 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/TCAFX2154901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b98177c4ce6ffd85c7f6a3932b33788fc7367d50e2703ceb9bf7e9f417e518. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAGD2219653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb82d5d746c8ee8e334fd5f05bcffab6c00565970f268b26bd36510746704628. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6G2246342.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d70917e4d00510a3d63df7734d9dc22acdaab4c29918f41ac82d07c63396cc. 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/TCAGP2227508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2847a9feb7c93e8e80c8106f23b995cd422fd78f7d6c4e220365963bd1ae8d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHB2351421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb559df879b3f2d52255ccf76e2603173c8e8811be6366afa3a6f59a774d3173. 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/TCAHM2334345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8763fa463f72c6c270b6ae7385fbc98528fa6b0730e66320884d398bf5706e8e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIK2483125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0c801660ab10314d6625d99b6dbcce512414ed1ad206e85d8fe25504f613f9. 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/QZTB42416604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b1ccd307e13fb44c0bee9e79843a818b6ef18fb1b399bede033dd5485729d5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:21Z), 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/QZTB42416605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698c8e014ee27ef1e0bc28f960410f8f0adc699d1cdbc882d07f358d73884b4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB42416606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e7306da7a3c83c6e2fed33044afbe4aa424e0f98599ac1e9871b9e5105ac14. 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/QZTB42416607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f2bae7775f3fbed03209e9523564f960e0f12d9f943882524b630ba72bfe77. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:45:37Z), 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/QZTB42416608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a0d2e378ea6033cb50e1f74606666b236414245042b121d06290c81b6e5e41. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB42416609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f37ba9e255964378efa0d28e48cfabe5417323ba244e8931c64613958f775c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB42416610.