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 0x3246d6274301ee844b22a78335b03f97f62f47062979c85e0c98bcbad666c833. 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/02d71eab-0483-4bd8-b749-e9ef0030f629.json and https://artists.proofprofile.net/proofs/artist/02d71eab-0483-4bd8-b749-e9ef0030f629.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 0x0fc622ee59877215b86b575dada56f740652ed3b9505a7c3423045dc582a6e52. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEND12138101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a76052cb7a7429c2c27008d5a0fa1ccef5d159933b2cabbc56dccb4bd4d6f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:38Z), 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/DEND12138102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e997f06a21fe939f46a4b26fe934982d92fc752b455f47f4b3a53f4008eda76. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEND12238501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a6b2f3dbb9ee8cab5d54e510c223a05ef6f656c041989ae22b0b66fb1a5093. 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/DEND12238502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb120c19c2247393e61e1afe0495e8d75c21cf5bc931f76dfc696d3dc633bd2d5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEND12238503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4b304657b2a512cf5553a214ed17628680bf98a5d3ba246ff0782c1d14da68. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEND12238508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd620a8d70dbe90f2f4933a8f6a653f21d01a3f7f57c2e5d5db989148579ac9. 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/DEND12238509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b288145fb0fbe87a8bec0de934aa78769900166682c8f9e3ae02e1d33edc8a4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEND12238510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea0d505e67dfcef269889c01a4c4aed30bb54675bd49511f599e98ed70257f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DES372401191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9851b90847d7be4a8d6e1d014ce0e71dee6a5bf962f31cca57c3ef008ab799. 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/DES372401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c1a79a23c4f3ad8e764fdd4e06765aa7a722b8325897a8fbc6eeee2b0df94. 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/DES372401204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4477626893faa1bd1df4bd931743563c466ec160013e532cb053b0b456548a. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DES372401205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160d2c0bb11468bdef98c13c80f8b21e5ec51c3c93ea78e1bfd01e722078e89e. 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/DES372401198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2fa02c267f7bbe7cacd2f678b4ae67a51bfd093af26b3d5d2dd883638bbf23. 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/DES372401199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd5b2bee1669385e8467034d00a647626a5f648e5ab5eaa59fba55f42663b0. 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/TCAJQ2527023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f0fe35dc2313fe9a52eea06e2f96a30aa66963f876c7ea04d215ef024fc2ef. 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/TCAJT2575578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd5b2bee1669385e8467034d00a647626a5f648e5ab5eaa59fba55f42663b0. 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/TCAJQ2527023.