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 0x8b108a8cf0cb2fd8ee082a1626625472c4f0e9030c7000101cc000644ea8a852. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52c74e85-f1d5-4fb8-b6a6-a731f3807c22.json and https://artists.proofprofile.net/proofs/artist/52c74e85-f1d5-4fb8-b6a6-a731f3807c22.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 0xc091226ec7c01b5f305a70f43127a3de1f07f3733d05b76dfa03826a5554687e. 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/JPPI00000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3b76e7dd3d1a9aaa5c944f6dc8edb54f8583a222603a296e2765ade8bc6bfc. 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/JPPI00000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efa724711d557f031e8684e7d6ac8a3580d66b01bb3d073c8325372403fd0aa. 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/JPPI00102740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e52338dc033a6293be16d99e2d27ce0603885cee100b3475b5bd2bdbfa231b. 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/JPPI00102830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740d6e960a19b1b2d653156ac5e76350a1952b65dcbe05610495b55b758d4aa0. 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/JPPI00001150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3b76e7dd3d1a9aaa5c944f6dc8edb54f8583a222603a296e2765ade8bc6bfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPPI00000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fbe2192862be3f9f4cc51f80a91708b4da397932a2ae5a7a46b6f4191f0b81. 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/JPPI00001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a186c8b7fabc1e367b5d6ba24a3225b0b7298c59db434515f7a7b00979c0910. 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/JPPI00001180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ff22113fc256f241ee7d036c9cfdc095397a9c2654d06e9353ccfe150d4bd7. 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/JPPI00001190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd331902536533ddcc1bf13806be905d5134d8790801f8200849ce421fd3b294. 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/JPPI00000720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5c06a5a31eb0f51a26b9dd7c07a374f2e2d4ef5604681111a0de90350f3a28. 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/JPPI00000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09fbc8f6171409b900f4e60854732da4887556b260f5cf44c25eacffc23a60. 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/JPPI09804840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef76a14a59baecc22a073c6ad525909816946673faca317c05d88928a514554b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPPI09806980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3b76e7dd3d1a9aaa5c944f6dc8edb54f8583a222603a296e2765ade8bc6bfc. 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/JPPI00000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddebf54104a7ac7386563ee2035274d0744249e8276ce565935eed42253c0d6. 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/JPPI00000711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3b76e7dd3d1a9aaa5c944f6dc8edb54f8583a222603a296e2765ade8bc6bfc. 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/JPPI00000710.