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 0x64952702caac2534204248f555266a195bce249ddaeec198b0568f8b2d4af15c. 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/6ea1be9e-eb5f-4008-aa6a-b47febcee190.json and https://artists.proofprofile.net/proofs/artist/6ea1be9e-eb5f-4008-aa6a-b47febcee190.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 0xd9af8618d2390f8591ff5b63c7ebe1cf25cf3670c4ab91201aee4f195c8ec08b. 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/FRS182109834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaacdfaf7d9c1a977fadfee48259d0e685269f0d8e87c018cda0f952e6aeadc8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282074432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6238fb2cd3369255f56c07656553d915d5addbed4f6aa477e5bdf235b4ba0c17. 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/FRX202021333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099af6af849ce86562602b946efddbb435fa217171d5eb6d760a62d8b1971ef5. 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/DGA062063205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaacdfaf7d9c1a977fadfee48259d0e685269f0d8e87c018cda0f952e6aeadc8. 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/FRX282074432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634d6847da7046cbfc6ab502b5059b1e440f2ba22e43074ad8f63589777fc12. 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/FR59R2112921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7600f18d81d1dee6368839d1af45e5328f263a60b68b4d779cab6875959613. 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/QZES72300901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1626ed97d0869b3862d0ce00bfcb8c20c5d5fbc1189ef6beab38bc4a83e96e. 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/FRX452206968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77131a0774d79bee4ad42f4c7ce57d80a4fb56445a4638efe570f68dbfc54b. 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/QZES52231447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47338ea52e830235bccdaef17af3ce761f644ee69ee45a367fff8c6432b4e290. 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/FRS182113476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f15c4a48bceb7b4ebb4e4ebd44581a4b6abb39d1cc49ef5ed00bd2492527ad. 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/FRX282182808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74967b7360cbfe28112f17314a6a8335cb2c02b1266c5a39535365bd6e2d94cf. 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/FRX282163056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079d808ac6fcb10c35606f0809a7f43e180ffc490973a02dd9b45694ba2703b. 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/FRX762069814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5543cfa6b12c50c44b7bc723da0f22b73ff487eb3c2608a97f5a5bd86e7344ea. 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/FRX202083909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10ce4041f1725d342a965d303e9505dd7f3c3f5695d79ae060711513c30f289. 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/FRX202008421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c929fa7f9725a106720ddbbeb6eef2b674e314fff5bd4620b2f00f91538809. 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/FRX452042552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9020b654f814d94acb526f7087be25851131056613ef29010cc48f54200fb35. 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/FR10S2014782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc1ea49cdb17be71ce3156a17f48a49899bde8d80b13148e336894fe673e6e. 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/FR96X1967622.