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 0xb4cdf6702e59136f24306eb7e47c7c5a40fbaa3ba211122b1e8736a6b3dfb91d. 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/c1f3529e-6aab-41b4-a1c8-31293ade55f0.json and https://artists.proofprofile.net/proofs/artist/c1f3529e-6aab-41b4-a1c8-31293ade55f0.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 0x370e9efa5d375fe07429c9c6027b9fd5bd65df95094240cd5da070b9c4eae4c7. 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/FRX762285766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58575ebbb7f855eea2a259418921d51dc496ac2cf928c043e9ad5b59c8ac037a. 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/FRX201951090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e735f421ebf318f95e6323a6c000754eff21040c5d8da8a42a627e777bfb58a. 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/FRX201951091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27cbf80809dd18786c7ce36a4747f0dfb77bd79b3009460f378bf899c70bf39. 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/FRX201951092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2d2a63115c5c247b338a79d59e0359237945df93e7055ecaf5fe31c39dcc76. 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/FRX201951093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ccf5ead51cb215ba904b1c62ae8d64f22612c7e95d27a466c2098514e00b0b. 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/FRX201951094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300665bb125f07331452340543e1ddf9efcd9ddf8215f9e0e6809d5b63529e8e. 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/FRX201951095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9aed22ae67402747ba705aa558e513df757b2fea096ce7ba94160df4a6844d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201951096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378360327eac786d493a19c21179d957ea4e9ed5b70a97679d40338bef2d325b. 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/FRX201951097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377cc841057e39aa9533f18dc7cdf64b8b223636b197b9ea0d2ce83684c17f0d. 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/FRX201951098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105fa3c6d9b5d4ea73f131021b021ac301baa5af8d6e0dd550d42a846270ef6d. 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/FRX201951099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fb22bc76bee9464e504afb81cbfbeca9eb516c50c6e75b7c9e490bdaf59a12. 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/FRX201951100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94c3c2dd2b91e74c493b9f2f3256e65c7faef10efd2f8ab1bde6826714d59c. 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/FRX201951101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6d391f3eb0515eaaa2cdd14c2e2632eee034b31e4f690eb23748aa24b0a2b9. 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/FRX282408772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5484a972477a68a4707b77a72d53f4b6fd9242e313b55d8e2cc01523a9391618. 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/FRX762293355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58575ebbb7f855eea2a259418921d51dc496ac2cf928c043e9ad5b59c8ac037a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX201951090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e0e64577e4a17f9ec8a69e4f0bb904268e2f349c92203824466b866071e13. 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/FRX872054846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e735f421ebf318f95e6323a6c000754eff21040c5d8da8a42a627e777bfb58a. 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/FRX201951091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de8d9a0ac51f9f1bf5ad201ce4bc46e77da170f48d25fc8f4d32e25b57f3400. 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/FR10S2319820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cd2ce790ee0d3092256bac4ab1c852ec54772ab636e22f903263405fe397aa. 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/FR10S2319823.