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 0x3d0766b17fc01725932e02493e7ba5bb760435285e58bcf67b14de5355e9038d. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5839b3e-adc8-4f71-95fb-1210492af61c.json and https://artists.proofprofile.net/proofs/artist/f5839b3e-adc8-4f71-95fb-1210492af61c.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 0x0fd236a3013daef344de9473842b6d20c4b67ed607c8f3bae9d5bbb46e4c3259. 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/QZES52596790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c24a18233195ca1ed67cea9e3a0f79224ff7fea26d26bda5c1b10715a40358. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES52596791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f02a5a60a7a35b1907d62f8069aa2045b0c6db8dbac978897ed17b2fed7f95. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES52596792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f912a716bce4d84a6cdd10d7fa8a6dc5abab2e7e29b0756603e55a2b2df739f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:06Z), 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/QZES52596793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2fe7dbca750caf8fbc983004e4aa39d1bdd2b2a4623afa2776d2ea2e7383c9. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:05Z), 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/QZES52596794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb618d6a6d3f95a6a5f64242157b81ef316836eff97f2164a2d32e7b60ffba360. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZES52596795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f4ee4d6a5e93456ee3ff108d2201baba8cf154a000499d144f52d752e05c8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZES52596796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b72e07e3326a39f9c5a5eb8827119dd1d292940f7bba6d3cc4ba459cf4b058. 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/QZES52596797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966447d9c5b1fa68ac3d4784b23c92c381bec5b6b7cae35de2a4d13c7280fdc8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZES52596798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43700e6fe6f7e5c5cd406fafd39b6e18d2f91a07b75becabc93e9b0e9f9f3e5d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZES52596799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938e907fcd015bc131559b6d8feb763b91661c9cf8748b0482348bc262d3dcb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:04Z), 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/QZES52596800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616ac71d1e58c725d6b61b9074c00f13de8d2e3611b051c9ddc4c416169473c1. 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/QZES52596801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bc28574ef47ddf8c3e0346a14d242be791522423dd4ac6c81e8559b6a95f4c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES52596802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d63b353bb80f46742ec3ea4a554385a35a534f0e97699a4ec15ecba827b15a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES52596803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef66c89ace8d4c8f5e3fd2685de7a6bee06edbd79f936aacf5119d7b6bd1b4e5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:01:04Z), 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/QZES52596804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170b2080178b3618442bd58d437ec43dfe3be564b8df2462abe855d7b58a2cda. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:32Z), 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/QZES52596805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c9432827a41315201b45950d83c72302068667bddb0ccfb919a52ec362581. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZES52596806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6755e1196222e1d2b1b93d9d317dcd2b33efc6a0656c0070dbb1b41429107cb9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES52596807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e07ea8cdf3501dc03127867d1db4996fe57b18b6bffda8f7049b2c7e039bef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES52596808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae65f59e7a6e2c6777b69977c4598ca5ea56dd10f499eac1b832d6ed49185513. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES52596809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260fd1a20349773cbc1fa99851a179e386fd8c81151ae68ccc091fbc5135e1ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52596810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7811424ca922f73ada7c84fa30bec791d73340cfa328ebffd812a4aa70c13f94. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:28Z), 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/QZES52596811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507887dadd57aec39487efd490e5e09f09e990b807e8cd17dc22cbc6f19b8c5e. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES52596812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d923e449cafa9f9de5988240e6501d434337081be8693e2d3dabc612fc200e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES52596813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c361f72124dd2f62ac2febb10cdc61917266c849cc699b9d4a7d52d669496dc. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES52596814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76840d19268f6546781cbea5bb98d31c8ebce4fc34614a9cbc6b60a3b9b1e416. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:52Z), 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/QZES52596815.