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 0x3b9927f1731d23b75d90b1accb0930d32fa645acab73f017c40f2c4c57e5b53b. 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/940dd0c2-13fd-4d2c-8ad0-3067baed1ce7.json and https://artists.proofprofile.net/proofs/artist/940dd0c2-13fd-4d2c-8ad0-3067baed1ce7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Something from Outer Space (Pure Colors Remix)
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 0xa8a2bb59da98e75d423545628273aee7897338bf53090e9aa51f27c29e243868. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/GBKPL1969359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f358a96fb1f707c5e3c08c11dd8bfe487b4c7a186471aa2fd8533f01d58ae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBKPL1969354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddb19e89a2a716e06c387618b7b5415db50fe1a177e9355174785418cc2a3f4. 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/GBKPL1942211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943135d7ef8357e2e38cc9c59335d48733fc3409b084add15f442b3b3613a630. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN31935074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04be43339501586cef1123666b33b88f508e951e2e5144441aaea3618ea480a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN31934183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef96ab09b7019498b3f71536f9b07076ce41e16ff33ac69055524f1f6d004c1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEQ022003224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c0295b9e7ded9b58af884832d2929cf4fa11890161fac86ce7f9d1d302ce75. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/FR9Z62100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38519ee0b5ee01a199af88f422bddfaa7f34cce966f69199be545eaeb9d56fd6. 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/QZHN92297503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38519ee0b5ee01a199af88f422bddfaa7f34cce966f69199be545eaeb9d56fd6. 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/QZHN92297503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ec7b2f4ff906b81eb0af6d3cd5628f97e66cdde35e8b097b9d71f35e69e101. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFYY2189456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce20ca29fae32f32a4f3048ca8bcab5b97201149064ed1e69d961db8221f761. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTRX2474410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79dc11693f3c380d5fe7c762da144ad40108def2d75806fefadb5e5d294f26. 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/QZWV32579825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46290519b8c9712a904821a4d7d58512b8c8a27d8b37cac1fdee62da289f722. 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/GBSMU6545806.