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 0xb668fc11b21b257b58a9c71fa0908526848506a67960496905bf1f827c72e015. 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/1a9ecbad-fb46-4060-adc1-eb512a7fe229.json and https://artists.proofprofile.net/proofs/artist/1a9ecbad-fb46-4060-adc1-eb512a7fe229.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 0x27e9d4f9f92952d914d54f7ebe46d0688fc93bdf5058471369e9834593c78620. 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/FR9W12306948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf2cf108b39bc53ef14bb42d68af27da2f42affd9b81af04166b9325cd02d01. 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/FR9W12306946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41168d982c8636e98a342baa9f556d5d59f2f6cf3c7240d71e938941a634d1b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12306951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe57c124f4061c8ef423b7b23e162c42ba69b024ab8d72d3a806ebf482c5cb. 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/FR9W12306955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa32a0de4a7633eec64887aca28a69436c93af7c5dcff53684c8dcbb86be880. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12144893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7201a7c669771399a561a26d01460ce2ec83eccd711940858987f3ef42b55014. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12144903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4708ae3cb4aa3345f2b07e1954b9b6c8937ac4999bc24ed9948c682a5a12a22f. 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/FR9W12145135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29fa38c8891c07282d12c0c9cb9eb58f2e646a3cfa793e692abad4d816c5e30. 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/FR9W12145976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4029f01a4e6deb859f03fc8cd6c283ac4ea2e8ba10b730a7c81190bc2adfd563. 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/NL4NL2132394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281691868cae95cae18cacd6d4895a71811b296eb1f766f49990f6a19fbcb3f1. 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/NL4NL2132396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ccfbf5abe84bf7f3c54f069754d87b570148b35f06dff370d88a32de7b7ab4. 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/NL4NL2132397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ea4e59213ceaed87ebf07f685452a94008bafeb4b9147ab5e16828fbc6592. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL4NL2132398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb47dfc4aa04a92f8f0acfe3f8f0b28cbebe56888b250ac451ce6ea88216f78. 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/NL4NL2132399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9260c57c7cbb99bbb8cb305f1d7aa2a4c8369f93ed00d52b5e53560923d7202e. 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/NL4NL2132400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae250f5dfd28d91dfcd6b93c06d936510cd96057c748241acc17a0ab109feb. 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/QMFMG2378541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460126f8c36dc35cbb184b665a260c53bc339b2706519ef2c7c81adcf013181e. 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/FR9W12206548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf1b2c9865aa52d9e4f3f7c1c1b65415796c0ae4e63696197355d1e2ea87cd3. 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/FR9W12146531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a6c784e24a247b30f4d5fae9fa0606c05f14d6e2c988ed035c710bda80ee2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR8FB2119700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2062baf97304cc4754e50a1c4d70185a455046311a5a5e9d951abaffa1ed0fc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12113986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd03b54b29e4fa52c05a9594df4097ef4db6c47d92f2baabd1734b6b357055f7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NL4NL2018574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df2893b36bb1193cbcd52b744c1febd8e984d6b219e2c5cd2f1e68175c1449. 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/FR9W12447946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122fb624319277c032e01524cc146894dd385d70f2243e7f3573f3880884c270. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12455450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13ab9b0b5b76b66f1c91d5f70dbc5fd08851698c741100a0caa9f531f9187b1. 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/FR9W12447947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e6906a17487a9aeddd9137077f8299f13b7a4ae5f3a5d625c77951f04799f3. 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/FR9W12447954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146fdd4691bf90ac731e7034b3917a16aa94a9bc528f8750ba15ac7e24cf13e6. 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/FR9W12447950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697dc6cd4dc8b2edd6ee2e4aea1addbfbf4e27a8d5fa449773cee351df118b6a. 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/FR9W12447951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c3ed9fc90721329a9c7451906000a215b0d5e9ba31298365816d85bf76427. 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/FR9W12447959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80767060abc04e3655d83a5b8a318c5ad99d2c972700a4bbef9c4fe3ac7975e6. 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/FR9W12447956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78adf189b47198fdf6b175cf4a852c595d774bf4c9342686260502176351da36. 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/FR9W12447949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9d314017d0f15ef831b68c5604bd18c8c86af9cb99d10fef39f87630ca7e27. 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/FR9W12447957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8ac862db38bb758dc322337dafbdb0ca0353e9f9c26c48426b7a572b49184. 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/FR9W12447958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9687ae6cff3b4396398218eabcd8fa655aac2181bd0b82b66dcab3755efaa92. 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/FR9W12447962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122fb624319277c032e01524cc146894dd385d70f2243e7f3573f3880884c270. 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/FR9W12455450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e6906a17487a9aeddd9137077f8299f13b7a4ae5f3a5d625c77951f04799f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12447954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688320c219a039e51e1142d7fa2b052e87ea6a7928612d4ea6b6cc2b8c7ea974. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W12450226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a67a2847892105503a3850789431aa12e41416a2c0ffff92ad8612ffa9167d. 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/FR0NT2101180.