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 0x4f64353253bed8ae392b2df6d641e99850156796c2bc2b913fbe9480fdd91eb0. 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/5cd6313e-a818-4a37-827f-7135086967fe.json and https://artists.proofprofile.net/proofs/artist/5cd6313e-a818-4a37-827f-7135086967fe.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 0x830c3c8f62b913bf0070aad90dc5c0d72c0d506e703f1733c6ce6ffb6c480c70. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJO2552679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ee9a404b63755283345640d40bccdbe218b9a58864b09c10d55ffef4c78cf7. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCAJO2552697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae022ae935a45364c8c3ca67cef698d1ece3dc099e202ab61c56b478f72622f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAJO2552720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eac4e9e066cf9f74a8ac2c6213db43ce5005e89eaa64e99d37d585e059b640. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJP2552723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d32c40f96f982ec2a4f5264718e0d5956f90db88e26c181808c5d3ff878507. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAJO2552731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e8b42be5cc185ac807a2055c0f56916f4867473916a7a4ea070cfa25614e43. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAJO2552736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138b42d8de1e155b04b5e5776ca59db461bdabdb2772436f28226e2d149bc88d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAJP2552740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76c50d79a02facbfa92fa80fac7eaebfc7509664916833fc6f87546c12e503a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAJO2552779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45324f0fb962bacc8c3e7a8b5e6af6e8b1d66bf604b1f61fc013b890366884db. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAJO2552783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cad338d4cc52fdc0abd593c90aff12fdaafbc0842a9c465f094630f06b781d. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:46Z), 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/TCAJP2508569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1919199f56ebd25ec1cba90ee3e387c44e8038434ed4681ab46083e9d214cc04. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJP2508447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e83756c5c16c7cc03adf23b89c5e80537036227c27d0a6c9d86e8506610931. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:02Z), 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/TCAJP2508454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169b521db65546b53e9aaa490fdd1063afca22f6639e0ab6ee4d72bec6219987. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:36Z), 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/TCAJP2508460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c95186639fa2e96783e2d9eb14664886160792f051173e0b0cba613f3929bd. 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/TCAJP2508469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86b2408886a2edd7176340674c59ddf59fb20bba4066c9f2f0e9cee5446af74. 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/TCAJQ2508473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d847824836dd3c9468bc39f95a7293a4dc3512c2fb4f34bc1e0dfa5b85cf7c6. 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/TCAJP2508477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927753d36017f85d2f0b6353e1b222b3922acce8f61dc012111d1c6db6d23739. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:28Z), 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/TCAJQ2508488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6a9a445514672d4abc19e50a6c3c517a2753e820292193c89f8c46856cfa66. 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/TCAJP2508514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fc01abb0f6108f36ff9e4972eccf54ccdbcd2dd0a1a96379cea1146fa38b18. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:06:52Z), 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/TCAJP2508518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770aea41f27a4a5f4dd4ebbd1b2f1bfa6e54ad63535fff8b390db6b582466783. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJP2508533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9193de49e1c836e3cc3a0ffebfad7ccc93f9ea49e057fc95988eead5aed86ba0. 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/TCAJP2508541.