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 0xf3d36d8347f5407630892ff3559f0670a57ad1119a533f495bc58918d151938c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87764d2d-fcf8-4b89-adb0-20a95e177f1c.json and https://artists.proofprofile.net/proofs/artist/87764d2d-fcf8-4b89-adb0-20a95e177f1c.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 0x6c970c57abf9a81a690e9025842ee509b6b44336eaab6947a34212b414f90e53. 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/QZHN52407145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96b6483b9fe61a88a6a3bef9565952b5ca26d36fc6cd61f74e397b4cd57010. 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/QZHN52407146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d24569f090bc7e3364c00a7af044d940bb85d19cf0e445378a3c8532942ea3. 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/QZNWZ2446831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3943746dad563f29fcf0a0c010eb571d686d4901c404e9c1f16d660ba1bafa3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWZ2446832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c970c57abf9a81a690e9025842ee509b6b44336eaab6947a34212b414f90e53. 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/QZHN52407145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96b6483b9fe61a88a6a3bef9565952b5ca26d36fc6cd61f74e397b4cd57010. 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/QZHN52407146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3ae5b2037b64e9eab2d9df75aa2d540eb6b0579e9245c8f76ab2db164f88ba. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB32304904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc1e94fe5794dbc0540ffdc097771f08c7b62e03b9b7ea4d624ad39097148e. 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/QZTB32304907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32a91db82008afe4afd08d631395b82f1a87b17be4416e292fb5999f0f152b7. 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/QZDA52335259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c4b031128885b7bdc394d06b34577075e1da0af38295a792e985b2788e2ccc. 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/QZNWR2358784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe157f5554946c12393d28ab6fc3e47365f4277ee265eb9f939c59e86b92ee9c3. 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/QZNWR2358785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c560b5b0cb80c6cd0b2d0dbf59185cd556854173cee3d2887cd94a4c0a355c4. 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/QZNWR2358786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf9c21c63161f600a52f29ed53fea61124134fc1cf98432c829e9f03e423a2. 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/QZTRX2316121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32a91db82008afe4afd08d631395b82f1a87b17be4416e292fb5999f0f152b7. 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/QZDA52335259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78b4f5100671e34b358c503ba99207d9093b151dcf8b4620f56eba2f18bc6f. 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/QZK6J2215429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1875bef75f1749187eb2be7f90fc6db185bf29d4548b6570531554edc5fde895. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTRX2228021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78b4f5100671e34b358c503ba99207d9093b151dcf8b4620f56eba2f18bc6f. 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/QZK6J2215429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2e61eca0717d301eaa41087863fe7d13c1180e88095027791da1619e6cc30. 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/QZK6J2215430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5fb3dccb97a96c635f89fb3e0e638b260d2b860058eb15d27b7b43647afe7. 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/QZK6J2215431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d36c7ba24a30846a26fc2865631f7002867e1b44cdb466544c1baef2e43be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2163867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198d39e934e385264b3837f51f24964e0f99f23e344aaa5d7d0a455108bb139. 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/GBLFP2143296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5a5ca7c77a5a8d3c9cdfb65796619042806aa1e0c73916b2c03d2fb83ed67d. 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/GBLFP2143299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3295c114f8d2b87068a963b0f086345d9b3d10714d30c512e5d60f423bb0f. 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/GBSMU7355918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdfa06e82853c74ffac2ad2c1fe82e8d9cd39ab437ea505e611d4d75a94f739. 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/GBSMU7355936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d3f570fdcf7f59b9ccbca09b0a7fa353692b01cf0f1726f2ac57895b380fb6. 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/UKXN21929376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4706fb8f7dfe2dfbfeb3a13dff5eda914d400bcb0ca7a5de221f6e2b833026. 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/GBLFP2127464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1211d11724f5636af64467d81615fc847d2eb154b1563f885423e7a0efd0841. 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/QMBZ92420048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf9c21c63161f600a52f29ed53fea61124134fc1cf98432c829e9f03e423a2. 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/QZTRX2316121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d83221a9b629487343f23298beba52d8ae2d7c1212ffd1c12b46d0d40a5e1. 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/QMBZ92420052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd494b67c1e539faa47b4ef505d57879a35dedbb5f98c798b01f42361fe7be4. 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/QMBZ92420053.