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 0xe8f51c9e385fbe4a85684808f78afd359212656da7f855648d26b4a3654c158f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1e52321-d822-4b4a-b5bf-116cfbcf5923.json and https://artists.proofprofile.net/proofs/artist/b1e52321-d822-4b4a-b5bf-116cfbcf5923.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 0x97a4ef6a7ac9c29594b4d446395351dd8f4acf5c05d04bae6cb92587d5baee1b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BEM971500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19de3122baa97893e296bb4b84145b7df951a8d2d734069d2ec7956f4497f4cb. 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/BEM971800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c72caacba15bed48626adb0a1d44c6bfeac521eb8000f86fef20d539a7c123. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:52:31Z), 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/BEM971800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3b72b9fc14859917f963aef3b0b2d47dda73ecdb24990656bd97c377f156a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BEM971800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48992a2dc23683825b68ca02e1db92505b78bd083413772cdabfee51abd4733c. 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/BEM972000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d4985134012db17d1c3006ed9a51c18454cb5d4dece6499b537a5bd47d8013. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:17Z), 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/BEM972000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1e3ae0b1661b97a7bdc3d17199e1a517370f7f7cf3bd1c3fd0ca29f7c13fba. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BEM972000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48992a2dc23683825b68ca02e1db92505b78bd083413772cdabfee51abd4733c. 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/BEM972000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbbf9be4d034c71b57b10c74e009c28bf8db14bd375dcbc94896c5af473d3c1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BEM972000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee1a1ce0fc3a2868ed335002b1509d0ec083af142751a7b5c5de6f1357fc34. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BEM972000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a04968af9643593ec2585cf2fa348f85ab54d8adec8f91f91b88d66a271af73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEM972000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e4c5b87925dc33e66332d67598b9cecfb2591ad36ebf910ce348456e6f602. 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/BEIX82400547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b76f14b4649f88a5bdbf25a52ce6971f7544fc3af6596f6b66c9a69cb0583. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:08:46Z), 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/BEIX82400548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e5cff43b0538f5ce11b366a734b765679dd41b5c132db0421c64de80f5eb76. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:38Z), 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/BEIX82400549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b26443b1e7c5a4be2b84157dd6b3e91f50b527f6021f54171a0958f16644ca. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BEIX82400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a563e10fccdc85e13cdadf0e51b8ec96e2bc266462bad78e45b4ef5fe7b15. 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/BEIX82400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938fe4e6d0adc8deaad7ece9c860d84dd174513883f3bd8fcfe104a5ff828ffc. 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/BEIX82400551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ff8f15d53e9b527dce9d826727d50e095b94bea1552919cb20fd535709dab7. 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/BEIX82400552.