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 0xc901ea3bfef5c40766fdd35c49e65424f91d6c045b76d1c95ee831d74430cff5. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d722ae84-1c30-42a2-865f-fe60a043d677.json and https://artists.proofprofile.net/proofs/artist/d722ae84-1c30-42a2-865f-fe60a043d677.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 0x598daa84806b5c5de769751a9fbe92a2f443f684c127055993382ea82303bb6a. 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/HKG732278197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7842c9bf8c6b7351cac1c4c337b00904aa97d6fbbd67bd6ca544fff73c65f5. 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/HKG732278199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8875c306aaa0a0d78be174bf839c4b805a278b469b4338cde0eb2266b8998f2b. 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/HKG732278221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38647eddbf6e79dafa5bead9dfad45f2acc326bcf6a7bc35225a78fdcfa543ef. 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/HKG732278223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a26f455ccb636ad0f2c32da556aceb9c3ba23b11dd06ffbb0bcb224c5130ddc. 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/HKG732278159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74178f8d9de3ac2685fbf3d92ef4e286d27401a671b900bb18c0fe8ee6d697d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732278161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdabe8555a11297c8e14beea2f27f3cf7775c0347542f52c47f58fd45ab591b. 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/HKG732278165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cba2f47e67c1de9bba30516c6724f437c8c3762fd30ed5972d1afd278add49. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732278171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be16bbe8037c00639ebe8574adbe3e80a811ebe59af2d3c7c0d55d2e28cfab. 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/HKG732278173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7956dd0d7f17b56182ac8e795bf3f95afac0ffaded878f295d5aa038f8c19a3b. 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/HKG732278177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aadef16713ea3769fbb51b5b7d33c0d64413740fd20ffafda44a47c3988c11a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732278181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f93352cb69e1975ca78a936905a1f54af148adad956516014da51631aa6c06c. 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/HKG732277751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dbd021c9660f9c5080e326d96b284ae2bcc9f21ae424af0f9f546e4014c79c. 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/HKG732277757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b717e6379767da48f3312c1633605bd254db2c5b829bea5b5ba57e5e4c13275. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:52:12Z), 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/HKG732277761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f666e92d25cc006411df5a9e1fabb16ffe2d3b348a359b939ba492547793c97. 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/HKG732277765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a63de24d25c6a8c3d174ca5d5d49ece81d39a413eb14f76fca6dc322cc91b. 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/HKG732277797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539ac48d5839d2490dddd7d0c5c0ef0d82b3a804393cfa67b3bd8ca7e4ac3685. 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/HKG732277799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b7421b9da9ec20b464c6a2e885127e2ada529eecdae46fdd5c20cd7479321. 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/HKG732277807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452a2f3f8277378ed12bd2b9525d66138014786d7eaf1719c50c088842499a51. 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/HKG732277813.