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 0x8a05769c4ade3284cd14a1c438ce6bee1e11182fd555c15fa337d376b0778efa. 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/d8d2fd5d-143a-4b4e-a353-20104f32de80.json and https://artists.proofprofile.net/proofs/artist/d8d2fd5d-143a-4b4e-a353-20104f32de80.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 0xcddbef4d18b1ecb46bbbe2f1ae61a0b425bb1e0f22024800d80baa6b6a0badc6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:12Z), 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/DEAR41774453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21fccb83de412da3c69a30fc52e37d57c9b8dbe741454b6266ddf3a0caed32. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBKQU1920528.
Make Your Own Kind of Music - Kritikal Mass Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3f8fb03f5172a0eadd17a7ab2c79ccf793c28b5bdf86078fac4b4d0de1b5af. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:39Z), 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/DEAR41933429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbd1c706416193f9659f6fdb98c4a6711b5fbe1b67c661402c0950b082f26d8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEAR41954430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4576b3e78f0322254a087976825ab5d8798734e7a81fcc30c297ddd7c88a01e1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:09Z), 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/DEAR41930795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50813b4611f8b1e36a90066deab37bf4199e1ba4c2528bf5c39d1acb4c94c5ef. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:44:51Z), 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/DEAR41910116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a50d3f5a23ce16a7b4870122ab7943dedec21ea351c54b1d7c231661c88a8b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAR41979623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ca07328d2aa50047d92aaaa6849430ce6f8183250e12ba491c1516f85baa30. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKPL2026779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221da37c1109c33e981b9386d322f0e11fe90d807060e01df92f24819956708e. 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/GBLV62035688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852cfa4532f53330daee7f3716bc9356e59ea8eb36ce9e08052ceaba87c93d9f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLV62035689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b13eec23b4ff31f520e1cf7b424ff8924707340f4603ef78fa06906b7d3289. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2239266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef9cbaee9eee013a69b1c466b4691591564aacf15d4fbaab7def9a5568b1459. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBKQU2339596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b61a92b22bb4394bb77ab0fd2857bd1f9494ff0d7d82713c2ec016ef4a7627. 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/DEAR41949477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efff90aa148e3599aa83939efc6d69df8740f34034840ddd897c96f16f849f0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:02:49Z), 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/GBKQU2364794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae5c3912d46242ea0f7d16784763a56fff4546c5a9bc28bbbcb72c072fdbce. 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/DEAR41831696.
Dancefloor - Jamie B & Nova Scotia Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b9b551767ad1073e3e81b56db8cb5ffc5b5efc37cedc42a522ec35a24be4ef. 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/DEHK91893102.
Elements 2k20 - Jamie B & Nova Scotia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd22166080527c6e23fc5b52420da460394673429e04b490344534bfba076a7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEHK91893726.
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 0xf295b36d04b60ccb2098a74b13ee18997fbb4bb4d29c64ba25cc290c289ff1ee. 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/GBKQU2210285.