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 0x574987fa6971a7f60d51ceceb39032116ae1058bbc95f7f5f42734f1fdf43a9f. 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/f9d0d3ad-6293-4f71-ba0a-d257b9caf4fb.json and https://artists.proofprofile.net/proofs/artist/f9d0d3ad-6293-4f71-ba0a-d257b9caf4fb.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 0x7835e353adee769021b10a60bd8433456524c00f67a2cfc7deaba0078b8f6ae5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RSA1X1900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50faa633889e6a1bb5ced62335b13584ff7ce8e453ab826e67737270d92f461b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATUM72000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f3145a92565765d116cdce550bd1f3b3661ea3adbe5ea2925f3c3a6430706. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:48:45Z), 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/ATUM72000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f04b5c3f00ed1247a2eaae1a4984e80ccddf48be9a164bc231588c5256a42e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATUM72000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc655295d799210c21538c5c593d97cb204eafcb8a8c5d93730fe04bf7babbc67. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:29:26Z), 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/ATUM72100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954666b229bfe793124c505c86ae4f6072b2baaea18fa493acaee29d7c57ec5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATUM72100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd099574aaad5909309019f79d7d04376bc9d700b245384d7f4ad50b9c1e8e7d2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATUM72100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2222625fa0c504cd33b304cca217fea1620a7990602c8b199d985f22f8a34e. 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/ATUM72100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c674024b70ec106552062c87326c8852ddac89102c8cb253cefe90591a00169. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATUM72300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362637175c46c8afa0dd3afd757ca5d443e169849a311ecc403578f0d7b7570. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATUM72300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00912f7512fb419872ce324d0a1ef690240b437d451be348572cbf880b7dbf92. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RSA042500327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10049158217fc7798e87510069935c87883f8d4127e55c9128ec17aab276df71. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJN2528218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6910055f494a9c48215dea80778c522c9eb2fb99cd5115f9f49d9d7d121fd60. 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/TCAJM2528308.
Durum Durum (Pocket Palma Melodic Techno Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c976afec7e45004a384ecea56f1870c67e350070ffaeef87a00bba2b2d875a2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:41Z), 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/TCAJM2528325.