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 0x6a33e6e74db929e8db19edf9c59531c08e873397b3f2a6196b3046ffedeedde7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bea1f176-c19a-45a3-820e-3c0c39469501.json and https://artists.proofprofile.net/proofs/artist/bea1f176-c19a-45a3-820e-3c0c39469501.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 0xfd00eee4ee7b857a6f7925ad1cf08329bcaa05648746f3558a063be74a6aeee3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXHAF2516714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404b11e629c888f9f2519daf0ba54bd3234980540085cfad0a26dd0413653dc9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:23Z), 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/GXHAF2516715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3fb84b117a9288051d2d7009e6dd28aec43ee6fc6c9a1237ab3251e6291f57. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXHAF2516716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98be1fef1cda21a7a2d4e8e0bfa454d08043e86db0144e5020b979c6207007d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXHAF2516717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002a5915c296cfd07376c773b2e6e57f942fcd744f303ae2b7346d664c3443d6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:11Z), 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/GXHAF2516718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09f92ffc763c4123909a92daed15a50014f196cdb9854927ed924f7ae81244c. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:52Z), 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/GXHAF2516720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e123649452e153c3f9102a27ebb93c662f637e603677baa502a6a2a21bfe5c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXHAF2516721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa597b320d389ce8d5b4d0b80e961031d606993dea81102dfaf96eb8bc687376a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHAF2516722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ae1ab85094107d36757400569f8fac9e089b71a2bda3312eb93d61f4fd5ad8. 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/GXHAF2516723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb92654c18282a3018405032bf3bf22772d90cd0e2babc20bd186eb7913a80d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHAF2516725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b09cd8dc4350b77643756b681f88487f796a344f3ad8db67ae28c29a18433b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXHAF2516726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1492e043e997be825d42cdb2030edb8de52a4ab4c04c4c62e2b6a60bac641e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHG92506488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe759cedc5a377bf1076af56cd7456a0245c782222ce003dd26f4f33a393275. 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/GXHG92506493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6f265cbf835898c38644f205d50e8f34fce62e65bc3f1eb1365dcbb3609f5. 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/GXHG92506495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3d7d0e1406b113bb2b1a1cc3e1152c952bd23b194981fda5e85d427ff15c18. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GXHG92506497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e008f1157b1088d5761b3af2751788c9b055fed4b628a9c978c1c124c134910. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHND2536804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd4805663ccba46a7195d3335719b5497e433e4e54e5c0b2325a6d1a99d650. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:01:20Z), 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/GXHND2536806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a246a4eb43c09dfee6f3e04266de2e3fe89dc22129af45ab710a7104b8ec8ed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHND2536809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cfae68019562a42cc65777012a09498952f56bbf53a595c13ac738b982a0db. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHND2536811.