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 0x679081cab2a6e01a3a4cc60215d706bdd50295e7fe9e6e1123180212aba79d79. 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/96eb30a4-2e79-4386-8920-7b5aa90e356c.json and https://artists.proofprofile.net/proofs/artist/96eb30a4-2e79-4386-8920-7b5aa90e356c.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 0x5ceec3192370ca8d2ee38e9f0e9f10a74462f265c352ccc486ff9f66cabc8b88. 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/USCGH1948382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de90bd39a8d18502824a1779fa98c8d62b6cd26e3b3a7040ee22af4d9befd. 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/USCGJ1933632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc914d02858f2244b63e8c56436fa3efab32fc5446be49247ae1103937156c045. 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/USL4R1803977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476c2cfadac58a8c23a4913caa7d8cc587fe4e8d29c17772b5a8aab42c77055a. 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/USDY41910043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a62249d4b69f14e803b453236b5ed370fcfe617f7e521c12b71a82a51031cc. 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/USL4Q1942589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6505c6b2026931bef59cc7d7449a60c31e7e9ac4ecb9c06d203fb9a7cff95ea0. 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/USDY41948417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51628fa757e7e6c36f2875c274d1f7128ef72c2a1cb02fd32321e96dd7d6200b. 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/USX9P2376523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e65a68cc17d3b4d2ef016a5e598ae40908c170160f3aa73946fbb01b0064614. 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/USL4Q2285648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d264c79699cbb4d7fe620e3b18d5314e0e2956abafad0bd0dd4609b35c44a9. 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/USL4R2114732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfe7db3335a9a09cdbdfd0ee5217b35a5ca6595d6db2fe4a98e054c7e1a3dae. 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/USHM92152621.
Forever Family (From the Soundtrack to 7 Yards: The Chris Norton Story)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6336fd8a2bfeb93852f349adb5ea48ab6cdd41ef6c5df7becd7a3a195fffe75. 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/UK6KW2100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680539137392b99e2b5cee5747ae25bb86eac0e7dbf528a03afe230b8148a4a. 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/USHM82010326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a62249d4b69f14e803b453236b5ed370fcfe617f7e521c12b71a82a51031cc. 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/USL4Q1942589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6505c6b2026931bef59cc7d7449a60c31e7e9ac4ecb9c06d203fb9a7cff95ea0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY41948417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476c2cfadac58a8c23a4913caa7d8cc587fe4e8d29c17772b5a8aab42c77055a. 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/USDY41910043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de90bd39a8d18502824a1779fa98c8d62b6cd26e3b3a7040ee22af4d9befd. 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/USCGJ1933632.