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 0xb4924fac57cf7fe76d1b26c8b71128244152fb5fdc24ac05874d767ca02b16ba. 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/be9caf86-1741-44cb-b7bc-392407f85376.json and https://artists.proofprofile.net/proofs/artist/be9caf86-1741-44cb-b7bc-392407f85376.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 0x6583bc0f47d6a7984dce75e32fc149826a7b683293be2d7170de1fbd83f876cd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:51:10Z), 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/QM4DW1605835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9600ecacf90380411d41e41d92ad0a22951d64f4c2e393ed6c9fbe11ce6270d6. 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/UST8K1691074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e79253195a362e8b43fa78536699ec38fbe09945c63e5692dcdcdbe7612de1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UST8K1691077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7369e6c6be579a7c5abd0832ce1fd1d0a70c663c4da0a25943383cfb8ba34aff. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/UST8K1691086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9d308fae472a7b878cb887e60ca3c4ee2715d60368481ef197dcc89fd3f274. 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/QM4DW1799600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cee60f0e241dd17b55b4e48868de4206f02e93f1c2fb76115bfcbc99a3a2ff. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZBRF1862069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ea4ddae2abbe43de9a03dea1dad0ec76dc68f6db168075be60814cb831f8b4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZBRF1862071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d24abb7d2e551b1e7e81c28f1ecea889ea7fae91f529a948a0712d653e7a87. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:01Z), 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/QZES52047840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1c9f548cd0806000950c58ec8433d209a7ef30aa37ec0567184001aa216b4a. 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/QZES52047843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3fdc7b28fe01bf1342e38c6597156d880d8fb7421026ed80a8b812c68b124. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZES52047845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bca8e0773663c572abee2ed388655a77f68963bfa1fb117669ac9067029228. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZES52047847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f286bc56906fb2109f5689f9e1d99c0a90612f4a87b352209f6d20d1c59ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGL2216540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38baa7abc299c95b72d30782a2e0f0b20ac78ef77e83e62ea45225ac1838d14c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:35Z), 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/TCAGQ2204120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01275550322b19125ae7c9eea8bbcdcb54084b1c9d3df4a36d500c0b3f0b01b2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGN2221150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a08e61178f9181e4ea7b6ade694e06172450ef5a19356e171813fbfd8fb4a. 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/TCAGO2210981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa72fdca6ecefa3df378f54a8ce01b64e10904098359c257b1fb63e536a1186. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAGU2322243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f286bc56906fb2109f5689f9e1d99c0a90612f4a87b352209f6d20d1c59ee. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGL2216540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21dc72f89fba7ed7fbbcec9d4783d780ac207bbd897450b0783fd450fae11a. 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/TCAHG2301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699a1455383e22ec15c652c08afd50c05f422d56f82f1d6ecc15426d313c6ed. 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/TCAHW2481396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea05d4385b678ca6a3158f93f9dcfec73d943677e2e79278a67d700bf302080. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAID2403992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adef393a5fbddffb14cf0063b71f52fc81d8e66922c9f9cf7ee7f2098eac873. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:16Z), 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/TCAIF2430468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699a1455383e22ec15c652c08afd50c05f422d56f82f1d6ecc15426d313c6ed. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAHW2481396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4591d77c9fecfb673b6b3f87a0037a58259b07b32e8b0d4d4bd4630da0bc8f38. 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/TCAIH2469020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8a14d8c5fed8b11abd4354b602240f1222fb4a43a7041515e878ac52e32a47. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCAHY2467056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012dffc7b9b222509a7f9fb41f0fdc45567fec4424e4d2db9dcc6cbff80c4be9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPEW2528407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bb370110a6f6c362a5938fc4752808ddc978a2f3f2fee0a4db94a4e5808a48. 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/QZPEW2563911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ace4bc5a63f78fa5d8c2304f4cc1accccb9c6753ec2629f6d320cf60419dfb. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:52Z), 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/TCAJK2585146.