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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6651b7e7067c3ea58cb4e73da9d9911c3c223d094c7aa3a5e4745423b0050fb0. 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/2814138e-ebc3-4e60-b804-7d4fb2dd4379.json and https://artists.proofprofile.net/proofs/artist/2814138e-ebc3-4e60-b804-7d4fb2dd4379.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b059c73c8729bdf25e5cdd670697e50090821eb0621cdeefd4fa3f00f97fd4. 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/USA4N1400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ed770abb236b7e361cb3e78bf619f1a13525129d367c8f09967a16c2d87d0c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA4N1305662.
Alleluia! Alleluia! Let the Holy Anthem Rise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d45eeab949933733d1641dc84fda1648823154d9d90a5f669d330eda0e47293. 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/USA4N1301461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22363e003f5f0c8af02ba42f4c67d3eb281f43bc2a5f4ab7cd4c448279dba3cb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USA4N1301466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcbb4b427a14ac6fab60a969a70ff0039d82825d69ad800773bb5e045c2008f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USA4N1301491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d93919136c8355539cfd0ef019f8f261d5ce97dd013af5c3ad813175640582. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA4N1600313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d45eeab949933733d1641dc84fda1648823154d9d90a5f669d330eda0e47293. 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/USA4N1301461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4750f6343c0e8b545fae61b1b0f8ad32c36fb608253208879cae03646fa767. 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/USA4N1305559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74815c1e1e80206191487a9b6c4b497a3c9e2cf519792d2275bc723715262a0. 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/USA4N1301494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6b62f0dcdb2c0c9cb486777a3ccf8a2f99713a0d8d9a95949e2ac8bc489870. 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/USA4N1301518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22363e003f5f0c8af02ba42f4c67d3eb281f43bc2a5f4ab7cd4c448279dba3cb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USA4N1301466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058b21498c685791a107d59a38a23903bdfdd9dc0a74872bb9c2a7bbf160b0c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USA4N1300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae37bdaf58434c4f1c20166d33e46ac8e6b599cc1eb6492d39f3d68f989674f0. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USA4N1600245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ffdcfb43976e64da825d85d12abaa770c8e7320534e6e501ff978e57c28baa. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA4N1301477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2a886df25eecf45ba0b01143a47cd3f28d94ba2b26021beb24df979a65aa53. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA4N1301488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c2879463fbb4087880a5b6bbeca15256abdd62a68ee85eef22ead937b2334e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA4N1900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c0ff07eab7a977ee35cae310330575bcd83e38026d2aa909b2bf530e3411d. 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/USA4N1301489.