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 0x5818b29f976cbf1edbfda2ff8404feadb2d5a7486f3cc7e023432cc66d5ffff1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee845c5e-cc41-4f8e-9773-e1af540fbc0b.json and https://artists.proofprofile.net/proofs/artist/ee845c5e-cc41-4f8e-9773-e1af540fbc0b.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 0xb9ca35df4a454f501997fb959f23799c42adfb4c63c5722e1d0b665808fe3f5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBEWA1903002.
The Rope (feat. POLIÇA) - Le Youth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27954af16c4b760afa79db8c41d64fadc3fd0f6d93d13096d5fbcfc5ae8ec963. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA1905080.
The Rope (feat. POLIÇA) - Anderholm Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cce8af811acac4cf67c3f950ce83683ea06f04283dfd8541848ce4414b7491. 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/GBEWA1905081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28f090b5b2a016b60ebb8eaef6bf158e449418fb9c918234f03dece2489b837. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA1908707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee5cbb681442eb685a3af541073715292873c12192f4d02d6b6db106d77e7e1. 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/DEDU21600010.
Out Of Time (feat. Polica) [Patrice Bäumel Remix] - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bd6feeb260fe954fb7ead5337e1477cae12fc20b9c0177ea1a50e1aaeab86. 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/GBHFW1700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4974121a09d5b07bc65e5fbbfe11c022c9f269c5c7f1f20b5e8b55475f475ec. 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/GBHFW1700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0aad9a0965265b711449cfd65b44450cd2c997ec814923f1ffccd63b1818ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R1894836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7726fb1b1743f5ecff33d1adfac0756958f42130e37ccd6c41cfb804645bb7f. 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/FR59R1894841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4217fc88e1ac7095eaf2fcff2fb5ee5fc76bd7dd5bfb92bdb9738417f525724f. 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/FR59R1894842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c432b5d2ff52d0e59550343949f1904cacafd9366ae2cdedd5f3e8324269e0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEDU21700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768b7876d2780118679e387bd5c28cd5d54b3c9cf270e2d86f5038e6a7d4402. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEDU21700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb880b9f7f57b3560e5cc8301bbcef51cd22dbb024785e577c9dd350f420d03. 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/DEU671700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2cfae260c7cc82593d9002666e7eddbc48c000deeda5760733b0e4bfa60b08. 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/USQE91500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9cecabf25d79b33776d52adf655c6c7573ce47b26771672bc827de410f8da8. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DEU671700150.
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
Alpine Grooves Easy Beats 3 (Kristallhütte) (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60697ad2eb10b523b944ddca623667dbbfb4d9b6945b081ce9fd86ae543536e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEH741314214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c762cda6cdf42ab935216d8a7d1f3a809c77bf3fd9f48e881038a49516a45. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBKQU2231388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcca4fe7c7ac9fb41d974f4518851a2fcd8e2fc1f681bbf909e049812c9b036. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEWA1910187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a25decb30a54e5b19ee5755fbae7b0e9d921354ebfc56bea1a811f4c08e787. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEH741719821.
Out Of Time (feat. Polica) - Patrice Bäumel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e048b6bb3cf1b02b152e7c70044879bc72acb5da9b8082b420309a42812438. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEU671700065.