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 0xc0a8de1e9fe2fdd72d2b4c4733baf562a1b311621fdaaf33b6e70c346dec4e41. 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/fc3fb108-b321-4347-87db-5f67080608bb.json and https://artists.proofprofile.net/proofs/artist/fc3fb108-b321-4347-87db-5f67080608bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Turn the Tide (Ruben de Ronde Remix / Radio Edit)
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 0xc684be9f48b4146dabcba058eed00d465bb11bb81c262d1ab3911e6e825082e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US43C1630144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e63f8654578854d3da122572c05868f0664001493a64cc69919a6a0bed118cb. 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/USA2P2432302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437d98c401b7e36439b346348f2612838ba6bb0be129582a254bb0f7ac56295a. 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/US43C1629610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88fae23ec2092b4ef5b5b0373442d89a9bd2e696212a1ef50d1a483751f249. 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/US43C1628665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b5805670122b221b7a039c3643e6c3fbb127888ffce2318830742593c7a2da. 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/US43C1626362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8ac865714f731e539cb572396a695c3859043423725c4ee0dd279958dd8874. 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/US43C1624842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baebc108069b50f71ab83f61710d5ac761b370e08094923485a84a3eeac1fe1. 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/US43C1621184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb721ba580686464838b5c23343729d3b377c7567f7c1689a4ffaf3a9dbaa63f4. 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/US43C1620302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49947df2f9758a40ce47a9dfa76dca23f709c3a5021e3355df6e578d02dc9f4. 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/US43C1620267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8745fb30749436ed4eee57d6fa02ac49b58aaeabaee7fa1de6a279fc4fa010c4. 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/US43C1619660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f09da6113c4fa03da1d80883f0d7408bb83c7897609388d9d93a2b0443bdc. 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/QZH6S1900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d554e7a229957bbd3d186edec51818a1214a976cbaddb2efecd251e03dbdfb2. 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/US43C1608185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d554e7a229957bbd3d186edec51818a1214a976cbaddb2efecd251e03dbdfb2. 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/US43C1608185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e5f6d62bb046bc14578fdbae891870726ad101d54c096b20903be36bb3204. 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/USA2P1875183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b400661ab78f114cbf89ee0a14710b7a55d0e65ba028a6a9458866564e4551c. 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/QZH6S1900569.