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 0xbb7951cec80c35345fbabc3237b5425dbafc60ee829eec4afdcda7996395f9a9. 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/23137267-c118-4657-b6b8-7689981c8cc0.json and https://artists.proofprofile.net/proofs/artist/23137267-c118-4657-b6b8-7689981c8cc0.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 0x5f89f672c944cccf82fb1dc32b684b3084b8c849a428d6eebac4605ddefb91db. 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/PLD642000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463225a6b4f8a418a7adc65d31701f907b43130d40b5e99fda126cb809394020. 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/PLD642000002.
Back to My Roots - Deep Fried Dub - Roots Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ad05da96552d8b342a4be6f99cadf0647293f346a35fe46d99c5426e434736. 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/USA2P2022801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf43fda447ce3fa1ae674f1fe81aff5b256adb3a4bebe5509319271eeac016. 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/USA2P2022803.
Back to My Roots - Deep Fried Dub - Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732207d8028259494777a4c4d5dcc5d7f75af3cdf03fa2eb4d12fe87bc40e266. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA2P2022802.
Kryptology - Isaac Chambers Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89c64176bb4e726830a53043083fd325412921edc2dbd2ca8bf2907fbdc2d03. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USA2P2022804.
Back to My Roots - Deep Fried Dub's Refried Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a214afe4e2b65dd1523737ec34213dc89539890a88cbac583de0f6d3e046b. 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/USA2P2005058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566457dd8b6401f5bb1d2c2ce219930c26cd6250ddad1f979687ccecff79ebf7. 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/USA2P1665450.
Kryptology (feat. Dub Princess) [Isaac Chambers Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b4d9758007c03b20051ffd3959b4bd2abb14a6bc889b96a3dd064ef33bbe7. 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/FR6F31715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816dee69bd1dbf6e48fda80a5df166700f791919f4aee6ff5f53bd4b0378e0f3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PLD641800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7566015c2b80af9a870261cd0ceb3e8a3a5cf111864a329fada78524edaea05. 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/USL4Q2392523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9e1b598c9cd070d337065deb6b38d97a7cb4834bb784441a8f192d98ff4592. 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/AULKH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fb93a0c50eb222059beac2dbfc223872db5704dd8cd5cec0eb763e99322679. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AULKH1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c135459664b67017093eeae4fe141273d460f1653fe843ea3597fe1b7fb2c73. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZK6P2292687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f60f4bea9eb7d6eda96df73d5000ea6959b1846c70e442f09f44546390782. 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/QZHN42279650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2d73d08e3a5f09bc1ebaa64facb0c579b8aec49ac2cfd285291c17efcb3943. 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/PLD642500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac41aa0b174a235aebcba9dde925ab3b836caab64c8c2785175a915c13b42662. 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/PLD642500042.