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 0x583a1c255a072eb059c25a05c00c08d0414795db43c8f2259b37eeb8fdd2a9be. 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/97746c55-9ca0-4ec7-a6be-a87e00f7989e.json and https://artists.proofprofile.net/proofs/artist/97746c55-9ca0-4ec7-a6be-a87e00f7989e.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 0x3f55e3ea5e652a9a0385216ac42003d5a379cc52a8fa298f36a3f0f4840043e7. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZK6P2356929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c7b71bee48741492912ab39561fcfed8d3c44debaee67690820adfe6fab562. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZFYX2446256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f78e6d9c1a4826c8c2123e6b8ead80a924332e8356efd50cfaa267ed2af5b6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN92425917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaef4000ddf08d72a92f45d173747687ac32e6c57c2199a7ffee53ba192466b. 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/QZHN92429840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce862e96e16a2382dc390ecdfe4597efb316336c60d62b9453ba25ab7414e995. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:30:34Z), 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/QZK6P2444167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37e98393b1c2d7b8a994ff731fa08b2ac9018c44d6e2a5753e403b4b3e8da0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWY2462885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd05ab526415ec65792373cfeb622631d4ecf261755e9cfb5a8934c66fdcf634. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAW2448971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf20bcfbf6325931d4d64e25e535178428f4b09d02615c4a9b795268c102f3a5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB92422880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919de8520bc53e49cf0999cf061d838315600ce262f19a9080fa804573f15e78. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTBC2482666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4af8e0a25422dfa66c572e88a284655a9c7a36d35f4673976d5a75ae6ff42b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZWFW2437813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bbe18b96de02c48d6352c61191d4ee3f63c5febef6be72f86cf26df969fcb6. 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/DEYZ62400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ef753a7c5e3dc121fa6eed18cd55163f30c94e3a3dcd230803a26e108dafe. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ792408992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0322597fae55bb94fe9141c1971d3dfa19c71bb5b4910a057631f605288177b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:48Z), 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/QZZ7V2432025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66123aedcc1c18e70520e873f85388f6a495b04cdc50a4f4e4edc0b878ba04e4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QT3F32416548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cdc0ad2df411297fdb1b3523eda492113becf0f132b23e846a05435bfc1e63. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZES82565741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb28990f3e28a926ed7514e01e95da91994d7bc3b6641ba80e9d321f38c977bd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:15Z), 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/QZNWQ2576286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c09faba9e9dd64130447101a7c86725b624dd1e454e08cb1b6ac70122b02d0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEYZ62400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645e54580f914a880ec4c30bd8a90547c0d19e8bcc0f6943aac9342bd84c82e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7812534743.