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 0x7c50e0a32a7b98adc0911694ab30c29d4781c002dafb107a43a8a2165e91ca95. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/312d93b5-5733-48f3-840a-4ed81949f0dc.json and https://artists.proofprofile.net/proofs/artist/312d93b5-5733-48f3-840a-4ed81949f0dc.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 0x267e679d7c4ace205d18eceebaab446edf80d038446f60d929f8269c028e83a2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAPA31100556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc400552de7255575685fdc52ea9b44af5e9cefc9c5b3a8413716888d2aaf7e79. 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/CAPA31100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f556890f43103be658675f9f8740d602cbb0966e268f0823b602fbe2542993f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLZJ1421033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007ed7b439246909d59461d1185aaa1f0791a0d208f619942245a0f9c7458430. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ1421048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a97579a6029fbdb85789f002c2dc38da26dc10ec4eb4d8642ba0d0b2de7f92e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLV61808270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f37729b9adf87cea527a972f5c23d91b05e3c5596e8e45bb03959465777e89b. 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/DEW871409242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af056e5080c5db09ea1cb31112abce4463c85d84c45c088c98ccb29100d9666. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLA8L1100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813936f56f19cec5beecc7fdd54ed867d166d4102cbef18a756f8633628d36c4. 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/GRKM11400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5665972f6db5015c7add4cadec670a7c496a51f1feaed306aea3ebab79b7b30. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLR341050037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aafd151b6f1ad9b91334d8e8e6f58ba94b834dd53192c3c3dc27d134755eb2. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NLA8L1000021.
Deeperfect Ibiza 2016 Mixed by Elio Riso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966fc73f0743d332c19d6108cb45331940043f69eda89d160822e92797b9bfa4. 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/ITA061301273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277f4bcc354c828b95d99b444b2d710b0a602dc84c15c03c3dbf29d6e390bae7. 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/ITA061301279.
Circus Electronica, Vol. 4 - Tech and Deep Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77c06af3f34fbeba5e02313412f115278cb976a7cefe52ab742fda68d402a4. 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/DEBW21200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a663cf68ee5d74c561fb43f7ccfb43e9d9bbd3da774e23d25848ccd3a22a2b. 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/USLZJ2599865.