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 0x18a78018b7d079727eabaedd24fe28d0e2e5926bdc64aa78fabacfbca9ba029f. 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/7b2c1e67-eb13-48f6-ab91-483504eb5072.json and https://artists.proofprofile.net/proofs/artist/7b2c1e67-eb13-48f6-ab91-483504eb5072.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 0xd747947d6191df2426b273b23537f06f8d76c5958a9523c8d96bbb565932026a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZPEW2401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a268c4f59968e21143c9039840f686cdc84b55d78b4c1eca2c4e13e6930bee. 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/QZPEW2440822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e481f5c546285ce1039aa2cadd6f739726700a63a4d78a1ab0ddac1801c2963. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:36Z), 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/QZPEW2443974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd747947d6191df2426b273b23537f06f8d76c5958a9523c8d96bbb565932026a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZPEW2401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99930add4965dae4e8f9fc00444c5115c41ab43d1278606b35088e77d2fa0e41. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:51Z), 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/QZPEW2443980.
don't tell santa (santa's secret versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35198ef238e65f38644a0850825acea132ac1ee15b59c5d8cc90753f3b5181. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZPEW2598109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c9125dbe3700d94800ee07c9b0728844fab8432877886e3a26a58828463e9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZPEW2598118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f971b829285821cedbc4657167f8519207dc57eb677e90297de710bcf6e6ed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPEW2545138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f1974e352ed876f1b0253f6a7097ef886905818e2afa093e924adbe5d3a76. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZPEW2598110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6063149523811138753df82fc3b537def180cc10de0c38f331dab64191d66a8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:41:37Z), 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/QZPEW2598117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da99dcd441e387491d48755fe8cb34b4eeb85e7d32c4a8d29eae1e776d3bdda. 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/QZPEW2516871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1c3eb7244f3c16c018216b519fab99ecb957af4e6101fc4201d5330ca02bf6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:09Z), 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/QZPEW2598114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda591fa76147838e08213aa3bb203b160944c4b1c386dd1ac24b3dd182d019fe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPEW2592949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520a930442900bab59815e7683e001c0f29945697266c95f0dfa0e3395315494. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPEW2598119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbab02437010096baf19608d7cd86120b7732e930bffd99eac19022e9a5dad. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPEW2598122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d009f458959982934db9049d14f7233fcad10cd91286a6adc43ca9607af8a3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:28Z), 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/QZPEW2598115.