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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d02edfb6585d0c6770e92831c522b059d328accfa35833ca35b986427bbec3. 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/9cc88328-4dfc-4c7b-96cd-e12dfe8f8747.json and https://artists.proofprofile.net/proofs/artist/9cc88328-4dfc-4c7b-96cd-e12dfe8f8747.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe4a5ccd4198d68a3444a01fc5d4b6b7770df76ad36c63da04ac1aa46687fb. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USQX91800799.
Thunderclouds (feat. Sia, Diplo & Labrinth)
Genius (feat. Lil Wayne, Sia, Diplo & Labrinth) [Lil Wayne Remix]
Genius (feat. Lil Wayne, Sia, Diplo & Labrinth) - Lil Wayne Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4569f322d002fe84833d9c67ed3087ab08efe1d65109220fa3c7b1773f0027ea. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USQX91900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29d27036ad5a2551773170de9f361bc3b0a6f1dbfbd7fb337f4b023c4dc5e3. 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/USQX91800798.
Thunderclouds (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef5857b8b5250d1dbae711615bae1005a4272024be55aa97d74e20563ad78f. 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/USQX91801532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2250c81a02891ac6548dfc736382e46953bc3f83c48e1ec96812b26198687555. 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/USQX91800797.
No New Friends (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad19d56b6bfe673a8077fd7defbc3422869cf4de534961347ae481ad7db63b4. 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/USQX91801534.
Genius (feat. Sia, Diplo, and Labrinth) - Lil Wayne Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328de3ee4acb0617e480abdead8ab38a4fc08a99a8f6328e6fc862aa618582db. 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/USQX91900037.
Heaven Can Wait (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a4434603f7ee9e3f3e19f63d762f1c247ffcd9679f74c2e5d1ea693953a40. 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/USQX91900675.
Mountains (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859bbfe643f5f4f095c94ecd6d629c513321351e3744d9261376af97e8bd1e5. 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/USQX91801800.
Angel in Your Eyes (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa277657b079f2510f6a2cc3eda1eb3b9614fd2a156e86f75b42f9b4c29d1a3. 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/USQX91900674.
It's Time (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76accb30b41b2a11e56acae0b3ac3c41075bd5aa64a2f5dc45aa87110eeaf3ff. 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/USQX91900676.
Welcome to the Wonderful World of (feat. Sia, Diplo, and Labrinth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483bfd6acc9dba185b2e5cabaf5895403738797ae599f7791b06907232868aa. 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/USQX91900673.
Heaven Can Wait - The Aston Shuffle Remix
Heaven Can Wait (The Aston Shuffle Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc75062e8efa94caf7349fe38e55fe3ffd868eba271815c9c3603c0666c809. 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/USQX91901262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8886674688c50dc5dbc296ea04179f0f6fa6e471297e267953715fff4b0c4a38. 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/USQX91901192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d6d8dec35e3f651ca62e7c8215427fd64944ac38acf3872a553391c824ad1. 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/USQX91901191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16380b08c44818b0c4c7e31be7b46aa23f3917f6569b835f53888714232e116e. 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/USQX91803038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a870a7de199b5b454cf24fee62096231c3e672322ea874f498ac3223a2e146. 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/USQX91803036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef82f222114aa897bee16a840b67cbaf31797a1668cb5d2bce2e0c0e9a640c. 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/USQX91801194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78724703c2d18b59229d2b8096599dc110c1644b4f2eac30724df8d500fd8b8b. 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/USQX91801530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8005cbc7dd9e5ad36d86db542887067c07c42708a4f9b044568a39a9d8295. 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/USQX91801282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29d27036ad5a2551773170de9f361bc3b0a6f1dbfbd7fb337f4b023c4dc5e3. 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/USQX91800798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29d27036ad5a2551773170de9f361bc3b0a6f1dbfbd7fb337f4b023c4dc5e3. 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/USQX91800798.