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 0x4c32ed0391e623fd202a751ba704f21fd28287894918ddb51e2a3383a365112d. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11c36f26-0992-4577-9007-3d0f591bffe1.json and https://artists.proofprofile.net/proofs/artist/11c36f26-0992-4577-9007-3d0f591bffe1.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 0x6d7cb306a5f6886ecb7a385a66690c8abf094c8ed3b03618851840887fe34b22. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USTB12300180.
Rudolph The Red-Nosed Reindeer (RuPaul The...) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabe4a3a2bad9f7846507d9c611921027aececdd40dcff90fff9be450f3a71f9. 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/USTB12300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9075f87f55c4f3b36f9a27487b5cefe19a6e9dfbf52fc6eb11c85a32a88d493b. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/USTB12300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b972bb22bfb20104fccfafe715ed282940b3dc8260f9b349bef7b031a5a43a. 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/USTB12300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02c5da5592fac350c98d57ffe63ff87ce3f1d184303f7ef5311728229e10f6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USTB12300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225facdbe27f536d2b8a536a980e3198d5605b0c3556d5895655989d79b2c7af. 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/USTB12300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0518c317f7437b449fa516147b474a96885514390d0f5c6ee61966eb480a0cfb. 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/USTB12300186.
Funky Christmas (Christmas At My House) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb90d4a1c676f7475f443e4b1e042ef1ee63c472076aafcf61b8f372a88ee5d. 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/USTB12300187.
Here Comes Santa Claus (Right Down Santa Claus Lane) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057dfbfd2455244a2f89d44b5e511f85f360636dc2f4868f26aae97fcf718c8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USTB12300189.
You're A Mean One, Mr. Grinch - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc137e3965376b05ff1811e0f17538665eec06d62c705ba8cc2af309437e01928. 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/USTB12300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d4c11785587704b2b56ec8bb2b6800cc2a406a62d12f113de7f79ae1ba402e. 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/USTB12300191.
Celebrate (New Year's Remix) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d5142c5ee7a0834daaeb8d5958fc46be3384c014fbd5341698481ffb40b58. 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/USTB12300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2bbb2dfbd1345dc579ae4f427799c5e3d0404e67aa7e62ac78ca8693f76711. 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/USTB12300193.