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 0x8e97ffc21989f5a01aae61660815729d44237232fb42027bde892438d7a19c89. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a323eb95-e3f9-45c8-ba18-51d2e45e679a.json and https://artists.proofprofile.net/proofs/artist/a323eb95-e3f9-45c8-ba18-51d2e45e679a.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 0x8d854a9b20af0ce408bc23a17f7e8d63239332018f4031318d59c598ba55079d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDHM1712287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f21d48933c14aa0f3925be7db161be0e0b382aabfc10c9e12c784b0bdf000. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDHM1712288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbca188f778a86ccff56a9b52ba665951c803fcbbdc5b3e9c4fe165ded889a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDHM1712289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf750de22a656f667099a09fe66bb3b2d75b8eedccb411a354ea812de0caafa20. 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/USDHM1712291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81e03fd96cd829d1fa0d8a6b5fc38bec4bb62d66381d10b98bdfa2fe91479eb. 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/USDHM1712293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bf6f8452a494d41d607435d3cc65f661fefbee037c42435d6780ffc16c93f7. 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/USDHM1712295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceef05bc35418bc32c42ed61c81a74026e675e7793bf95c355e5b7461742efb. 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/USDHM1712298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a96a43fff3a096673720e5a1fd2878c1e7c40c9e7b1fefea9e7e5f22e6578f. 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/USDHM1712301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801a019bde017e0e03545b9c9ef6c954035e09bc92864a5078b723266d667c2. 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/USDHM1712302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bac0fee6d5991c208b857c360ce2feb320f8d2d766fdc433462a5f1dc7f08f. 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/MXF152402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a375e91003cdccef964e3834349109577e85c6fd4760432ed291fc2e189489. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G1919911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a78f208b372c4562e2a07d94540b72bc634d36c0dbba2c61d77068bd20390. 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/BK4DA2505967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419182f3ce51fca3b5e57f553a09b2a1064421180bc16586e0b38f9894d42eec. 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/BK4DA2454649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a503a5d49a7d217ddeccc9d8217f24e973f9686bf8f8a32b3e36242f689531e. 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/GBLFP2281803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb8363261540577639c0b064e61ab8518b52b9e150a449f7f8d54541bcb4288. 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/QZ5AB1930684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5c5659d2334eb151dd8fbf9381047d808431d55e6c86dea10525d305960f8a. 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/QZ5AB1857088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c219d3e3f3ba2bc06971b21798936bfb2bf895fc3f392e62d7824e3ea219836. 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/COA1J1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72843e172b6cb4c778d1723c2f406862ce299eeed287dc503922279267254c5. 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/TCACF1554984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ec93b219f2391c71245b4f1887f777778add0f0ebb2f1c59d19e50d54b56e7. 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/COC011430005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c9debdf5c0091844fc326b5a6ecb5de48b3253082622a7cd456287e72b5f1. 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/BK4DA2540934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ab0cc10c7bec275fb47eeaf0330a7f14dd7f0847cd26c9a7620e8bff0e20a6. 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/ES71G1921715.