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 0x8851e20a5281186d8e383432ced420ae44ba45079859746177b29670cb48d750. 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/74e70bbc-5702-45fa-8cd5-08d8ff2a6653.json and https://artists.proofprofile.net/proofs/artist/74e70bbc-5702-45fa-8cd5-08d8ff2a6653.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 0xe54e7ed01a23c6191db79850fbfd20c6920c2aff9ab243145c2f3049e1e3fdd2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USUPA1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07efe16bdd6b54705de84901dce2e8e5ae75e39f97a33f1acd725e6abfa34239. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JMA271602879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c47f0493d3614ca5c30e4bdeedf1654fb6e18084571220142645efd46a335ee. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USWB12101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85f9b6e712db10d4e8d6238ff9bfd5c4103e9ffefe83623668178694ebef7ee. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US5ED2506836.
Link Up (Metro Boomin & Don Toliver, Wizkid feat. BEAM & Toian) - Spider-Verse Remix (Spider-Man: Across the Spider-Verse )
METRO BOOMIN PRESENTS SPIDER-MAN: ACROSS THE SPIDER-VERSE (SOUNDTRACK FROM AND INSPIRED BY THE MOTION PICTURE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afacfeadfb533318fcbab183682e0b52e68e187149128d4fb720e6c6225565f. 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/USUM72308560.
Link Up - Spider-Verse Remix (Spider-Man: Across the Spider-Verse )
METRO BOOMIN PRESENTS SPIDER-MAN: ACROSS THE SPIDER-VERSE [SOUNDTRACK FROM AND INSPIRED BY THE MOTION PICTURE (METROVERSE INSTRUMENTAL EDITION)]
METRO BOOMIN PRESENTS SPIDER-MAN: ACROSS THE SPIDER-VERSE (SOUNDTRACK FROM AND INSPIRED BY THE MOTION PICTURE / DELUXE EDITION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa673bd125cded3370099a08cefe7b9f13f533018b95352f83ca18b836764fa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USVPR1400470.
Strictly The Best Vol. 52 & 53 - Special Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9fb4607fd939cba72279ecffbe423bb7a885ad1c1436d2f5fc1f33820b8c67. 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/USVPR1500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0367ee523df049d953d8f7487e466a1deefc4b05c9f8c4f327bf5daf7d44e398. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USVPR1500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ddaad8caccb9493895000d99f225cd2d04b8bef816ad5b150361b0298c9c2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USWB12102165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69f8ff6f711e04837e81c61ffa59ecabf882cd851559f3dc7fc9641c4857e4. 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/GB45A2300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ddaad8caccb9493895000d99f225cd2d04b8bef816ad5b150361b0298c9c2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWB12102165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595717af660f134306a74862dc4aeb3442b8ce1ca2cd1e41f787400b3b2f46c. 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/USZ4V2000396.