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 0x49d8c0b90ffd8374c2201d79663a6df99633a4fdd42e17adeb91588831c9ca42. 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/d8f39991-5714-42b7-be67-2b98c018872b.json and https://artists.proofprofile.net/proofs/artist/d8f39991-5714-42b7-be67-2b98c018872b.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 0x921421f36bd53c2da893cd296ce80b092561690e6cb0731001c48f2d58de691c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W11514537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301512e5a3e290f16832b8d60b466139a712fee85403b2a06fb43ef982f9ab44. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/FR9W11514538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dd0f5e927ea1b87166d4c85775f9476d0916dcdd9a4031b53b69b72983c841. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR9W11514539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e15a28422b8a4199a7b5bfbe174caf53ffd3e33078961dc610178ae6c9ab72. 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/FR9W11514540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a35127c45ec3dcf87488e5b43d5b0e20e2c94de1b3c6b856cf699c15f791fe9. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR9W11514542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc110358691e3b3c155e5722638c7ee978d318cc13bcf61e28184ebf93d3ac. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/FR9W11514543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63959265b623f6b6d643023e70685599cb83a70f5bb63a28ef7ccf3b90d85887. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W11514545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8092c0924c9371aacb5b004bef11869fab8b06541ed41a5810f4337e6f964f93. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:22:58Z), 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/FR9W11514546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab4ec3de6038189bac65ad76bbfb0417aaa37b6ea8d104bfa831b123c8506ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9W11514547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb344ab29127d302ccc6f1910d1dec54cf1b67b664d49da5e8174b2700eed9f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGR2261889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa711b45c07104cb92efd3fc348018640751dc6093c75bc168c415c68795b420b. 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/TCAGR2263414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7208d3a4f1300e07a7eae2c0ffdf8b81b84a3d8282117d3f9c9cac9298d80df. 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/TCAGR2263571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d37acaf66f6f393b468341d5bb523e939589557e9016efd50f09f4aa23857c. 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/TCAGR2263601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11506253df27ccfbfa787713b9ea1b5eaaa78ac7f83a240ccbc694cca5e881c2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGR2263630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0dd0949752422adf0c0deb6ee47eaf4c57b465e1afff4722acd12a425f5501. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:35Z), 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/TCAGR2263717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0522895ce9054a00d163bb3dd3cdc782071cb639d5024c089732df29ab6072b4. 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/TCAGR2263959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c38d7fe10c9d285c5de65020d0e5bcb56961549a410f599d6cffdff70e849. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAHD2375596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15be7ff2a1e4bf04886c4c7e51a4eba32722597b187aedecb05f94fb25db2dc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:05Z), 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/TCAHU2411756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240ad8bc7fd056779c1e75f7f2ea27927fc2cb9e3b1361757cb8113adcda5fc7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:44Z), 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/TCAIO2440619.