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 0xc3252807cd3233935cb4f78375c66a7416f14f8be29f16817ab196661722f486. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef7ee1e1-98ee-455c-8052-4ce33c7f026b.json and https://artists.proofprofile.net/proofs/artist/ef7ee1e1-98ee-455c-8052-4ce33c7f026b.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 0x2d0c0ab406add43b105f4ffa54b4700ffcab8bdefedfc37e1dfc602c8e1a7ea0. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/LBA081101617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7c3af732872635536082eac1f22ffded2ce2f353c3223e031fe7b62736317b. 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/LBA081101612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1eac9903bca50574a6ec6c987998c39fe0551c8f972bf2f507832569eb31a6. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/LBA081101613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee55eddd65bf3f9d667038862c66062c8f8513d7b65725ace4bcf08d68e0c8f. 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/LBA081101618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419350031d0d6027289ef53b585e3339ea4c8b1abb057adf52470eb25165223. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/LBA081102415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa537e50f0193ada61a6ff061a6a106fe55e9756a8443221ce4d4c63ae6fc4bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/LBA081102413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308c2cb5fb14a74c0a63cf4470b3739d7c68342e318172cd99f67f9caa48e91. 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/LBA081102412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d40832d66ef4ee6e7091870e8105165bdaf238123de32d7f216279f9bd00368. 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/LBA081102411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30811269a2c3b0adb6d26389c3b5f9d0cbc8f95b89a5adf253abfa900198226. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/LBA081102418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f365b1b82133f058b63e6dc0dbc5e3877fd19fd05263be641640b47dbaabf85. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/LBA081102419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da166aaae006470e4edef8d1eb21f7d7175bc2d2aa75c7642e18ac2dd607e99. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/LBA081103030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5a24ade915f81b31193e3365277e378d2890fde0aa8b270b89deed8709aed. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:08Z), 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/LBA081103031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2db6698efa037aeefb156e36397a995f12f8946aa98aa1746bf5dc05cb3a5a5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/LBA081103032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a3ed3e8bf1f51195a5e19c07d8dfe3b994257ad4d1d844bfe49b42e3d7c21. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/LBA081103033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7122f3ac0bdb19dd1d05f9165841e9c04d005c212f1cd0361bffde459b2c6b84. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/LBA081103036.
Al Ghawas (Original Motion Picture Soundtrack)