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 0x6a603c5ea385909df93bd56a57ed7f9a8cdff6b122a8d07b10ca0f9b548cd72a. 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/bcee670b-1d9f-4f96-bd03-f9e036a94587.json and https://artists.proofprofile.net/proofs/artist/bcee670b-1d9f-4f96-bd03-f9e036a94587.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 0xec79467bcabb343bb3531f47d20d62c44d06d82f218cbf6e4590e15b99717aa2. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SKC251000409.
Robo Opatovsky & Overtime (feat. Overtime)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ba4e9140846735e7859fb033d236077d6a7c0d09aaca1aaf68cab96213299. 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/SKC251601301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d912f430d10aa8e13c96237110055411f0c67debd709c3555884ffe0ac54246. 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/SKC251701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d912f430d10aa8e13c96237110055411f0c67debd709c3555884ffe0ac54246. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SKC251701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71d9126beec9b03c2ac9c89b5ed25e121028ded96af42864b5492067820e93. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SKA012000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581403b215c9f06e4573deb71420e77e9ba6dca64db1555270ed4372e9169dcd. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/SKC251901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71d9126beec9b03c2ac9c89b5ed25e121028ded96af42864b5492067820e93. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SKA012000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581403b215c9f06e4573deb71420e77e9ba6dca64db1555270ed4372e9169dcd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SKC251901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec604f84bd9fd25868e26b5debcf3354a9596a9ad3cc7dd33201f4691f62adc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SKC252401809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74833ea76b37625e52f87a6589f75229580b5f777a2912218bc0028e228df51a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/SKC252101804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34144ee3fb262ae3324279c7fd9aad728408161d4140060503145b882c34c4b1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SKC252301807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0c233b26a7129814e4465095198e720f626da538409fad95c958405e366878. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SKC252401812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70472a549a9b54aac38172e54ff97024889db0df7bc286432f0666329acf9fa. 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/CZA110003026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d78a174e6319eb15ec8bce7cbcd78b8d32261b9d6749538170c87771fb1807. 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/SKA010400029.