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 0x4fd919490a67d79c865d73d654927501a362e2e78c1221d0446046ccf55b311f. 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/6bf8a7e6-b41a-4424-8aa1-81ac20822240.json and https://artists.proofprofile.net/proofs/artist/6bf8a7e6-b41a-4424-8aa1-81ac20822240.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 0x2de3dbc7b4fe764b717d2336b092b6d63406e229a79266a2f13a6b3204efffa0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX762415645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0745b14260bba4825d2d1124314449b31cbabdb5685ab7962853b623965970eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUB422302924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e52064824486bdf7008821e24a50ce770ad8685786df4e5e18ee28657237a61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/RUA1D2377262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0ea77e2e5f5c4471e4bd138e8a03000a3d2efc4ebbee1cbcb522ade42295f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a4df909fb5387d67ed63c8b6b48de8dd5a1c38a94d1c9bf4c5767ba6360a9d. 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/FR10S2332099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5aaf81505a6948185f6336b05c623c40cd14b20ee8c12bbad99b1a2377cdc0. 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/QZMHN2274944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c65115d95a8110c112b1f8dee30a1c57b85b0dc50d284c1eccdfcb2bc5c083. 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/QZMHM2254883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed19327410fd64c0b8473b70fcbf6df06aa6fd2cbff1b288403fe06ce6a887e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92058727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e975b0fa59d6cfc5d84bb9778fb8a6dbca656df95cd6da0a596eb97bec24c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHZ62075077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa539ff49a78ed0711df88032b96e1b6ca5432d9c5a2cab4382de0af740694681. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX89G2596166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6556e04c4151ff5676b0cc378344c81cb654345a5eea8d2f5475f36a4dfc2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812412559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3dbc7b4fe764b717d2336b092b6d63406e229a79266a2f13a6b3204efffa0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX762415645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a4df909fb5387d67ed63c8b6b48de8dd5a1c38a94d1c9bf4c5767ba6360a9d. 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/FR10S2332099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7726e95d472ab60a6d47ca18a2eb06b85c174115b96706d34d1af07db90a94e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/RUB422200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0279398c1080affaa949190fa162ef5ca72a50d03c0a65195c49aa5ce1b1be5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS652162360.