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 0xfad7a0f7b2d62bd04d1ad8030ade2fb16882db342949918e5fb69ce4dafee27c. 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/ce93299e-e884-4241-b0d0-372b097f1a15.json and https://artists.proofprofile.net/proofs/artist/ce93299e-e884-4241-b0d0-372b097f1a15.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 0x148923a0485b1138ca5e85289bd9974ec8394b60b9e5ce4156a198839bdbbeb8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CAF5R1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc31a9bd0c9150bb1e7c03553e28ceb08b6678699f604c975f3a8acc63bdee79. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CAF5R1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d23e9fc6beb6e63777aeef0e0eccf43633628defd5f533eadfffd51512ce7. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/GBRGV1820391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7dcb22086d37dfb4eab05c07603b57e0e41488236fd456aa28054e0b1cfff5. 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/GBRGV2320942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c61f97a865131131cad8aaa874f0b373be6e461508cca649df3069e4d9e6c63. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBRGV2321061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e08d3fb2c6bc1eae15b8eea8c79673c5f23634ccc75b3bd9d8d97e176943e3a. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/GBRGV2321091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12165dca2db4c2b4f73f696d7ee1b0053e9dc256a37953516cfc5a46690c318. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBRGV1520202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7dcb22086d37dfb4eab05c07603b57e0e41488236fd456aa28054e0b1cfff5. 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/GBRGV2320942.
Bombstrikes: 15 Years (Curated by Mooqee & Beatvandals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d23e9fc6beb6e63777aeef0e0eccf43633628defd5f533eadfffd51512ce7. 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/GBRGV1820391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2d10a3ee5f38ff7a00867c40d4bdbd45a979d82ae2e3a7da94693588906d7. 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/DENO32400064.
Pieces - The Niceguys Remix (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c53c94768c69d421f7df83f29b5e699dff9d675dc44eff7f4a46f9af090f1. 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/DENO32400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb810985cf79d6b6a791f3d0727901e736d3ae424a1d953acd6f86f7ac54c7c34. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBRGV2421141.