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 0xb44b2349b99f89ef6396ecebea301f80a2fc4db4e3a3ed4a4e9f69761aac5637. 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/63889018-4040-41c0-8f15-aecc5ce5f164.json and https://artists.proofprofile.net/proofs/artist/63889018-4040-41c0-8f15-aecc5ce5f164.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 0x18eeec3f7d831960dd94e1ab9dc174408fec049964bb23549038edd01ab4b3da. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6SA2386478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf788f361176afa77bdb9f1cd6d38885add0b42781398002a664f749622b63c9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6XY2343612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf0df54a30c1a978ca7e34b9e79170b2b1c8b1429593b6ddcef25b1209bf671. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE6XY2309840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a258c1cd046cb035280f5539d526a0ba39180d07702f99997dd1e4bacc7e45. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6SA2396219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bcebcda09b4976ba381cccc6f68bdc69057a5ebc62ee21418ecd93d5d21e22. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6A92367695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4609c8066208c661f641aeedc2ad260d9050377d8ea5d09f08f0fda64f4d47e8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:38Z), 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/SE6A92356794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d016b0b3b29ba412de64e60ac7df1089b15162da42dd1c36a318c072a232828. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6A92303411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf976b87e2bb7fededfce4218d0fc85fda653c5d6210c2405da5fc5462fe58ff9. 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/SE6XY2365688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bca6a82e8fc921601d98e8f22e2789590fa99260aaab3ffea65ad070cd25433. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE66N2309922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4827e2662892fb980ebe99ab384d33b012dbd41c3a689697b972acb21c1177aa. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE6XX2370598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e09bfd16d959bd79eb1af3166adf476ba19fea12b43e183856d454898e0e66. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/SE6A92397803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f690921624ac0bdd1141f2e85ff908fb228a214fba9b096dee7ddbbbe968590. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE6XX2366798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d87fc7cb7f7a7b0690d1a4843c7de9dd8b7701e03f4b5a273a5b489926d2ea2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMJG2407665.
Harmonies of Silence: Echoes of the Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4812c4433881dbc518ae0cc2e021c6fd716beddf31c1a5bcf11492a39813d3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA122462596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e9bde8a58305f98b8ce1bc287bf8adaf4e5df2f70c9c26b02dd4e8ec5b7876. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ESA122462598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d145bda7ccc752133b1ae11902c34832cdf937471179cd8e78fc7fe78ab9bc4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ESA122462599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5b1efee1833228e5e93e380d001d0741cfd40b574f93c3b54a7ae71657aabc. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ESA122462609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a4372a31387248c6d12988a9b3222ee8199d8e343391f61dad9a487502ec9f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA122462611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d916578f3a1bc8aac3b92a14e0110f6e2211aba15592a8a2ba6bcca57ec87. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESA122462625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a66366778eb73133105d529299953ed16f876f7b98cdc37ec08154ea610df8d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ESA122462630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6f7fb47314d865abbc68ab9a414159d8e39c94b76f02d57b214bf4b8502108. 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/ESA122462631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35695570d86337b11038731411583ad0941f2fed46c18e600272c7e52ca0ee8e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA122462644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988e180d03670b9b280e35fa627af8712a7267a580d011785961574b575dca5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ESA122469188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bd1665962576e5492caa25d0a948d9dd38b95d9cf22afb96a6105c288e15ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6I32536868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708e4d27b5c74cd34d207e9dd7e3790347f55afb4c1f6601eb69c7db8a530532. 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/SE6I32558494.