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 0xcb99017b9ff426a6e003fa11c8e78d07a47c348aa498027a64ccf7a9633c958f. 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/7d8a3d92-70a4-4ab9-b72d-a80615734790.json and https://artists.proofprofile.net/proofs/artist/7d8a3d92-70a4-4ab9-b72d-a80615734790.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuando (Floresca El Chuno) - Sunshine Radio Mix
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 0x0904814332caad2e70ddd38708d4f539a78a7317f96d5f4661aaf3306c0c5ae8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:45:15Z), 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/DEN060900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4145a33501840932fdcc221401acc48f23824adf6a462980a71cccfdc86cb93b. 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/DET191509878.
Ciao Siciliano (feat. C.R. Easy, Silvio Piseddu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53caeb387b6052451d5d658f723fdbea8bac969445ea883e7edb12c006e9c0aa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DET191511642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbb5a29fb940243c68d7768513281443888c2a81acd8972d2630eb40903a4f8. 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/NL2QC2101323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a84c4f26d7a8dcdb8050cd62ed94725a15ee8b2ba843c0e064ca6d4cec0348. 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/NL2QC2101324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57517dbba5777ec0e48d5fc2fa6519ea872f8adf4235f9173c33fc5397efb9e2. 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/NL2QC2101407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c857385ca813af12cb27276870fd03eb2fdfc3eff6704ea2f79c1d322b446. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/NL2QC2101408.
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 0xd19ad2b69ec2d90b4e573131456c3289c2fd16f2f7b4de297388f96c8b091783. 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/NLEE40802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b27d6c5a9e95560656c625469e0f3ca045f50029d4775e41c0ab3fbce085c8. 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/DET191512628.
Rock Your Baby (Da Clubbmaster X Tom Pulse Disco Edit)
Rock Your Baby (Da Clubbmaster X Tom Pulse Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d132b550b47472a69dbf8623d622161a77fd87143288759f158453de908a51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA312200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c956a06aa842a6ddbdb4571b452896cd7843d6e3a113a7111c0dc038a67dedc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEA312200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc11bb55281c8f8133d9bb2d63248b32096f1582d7a3a38261cbaa81f6a773. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA312200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb2163f383f59aebc3b86c881873bae7e27e18758599ca2658bd07cc99dab4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA312200243.
Never Knew Love Like This Before (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb817db21cdbfd5e745000ce1becfb24a718f2722acdfe899acaed8213fea5a6. 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/DEA312107153.
Rock Your Baby (Da Clubbmaster X Tom Pulse Disco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cd4777e1d84baebdb9f379e0406fba639b0f816d92509134ba5d9d708c684d. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEA312200594.