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 0x4c702a59b2db8af15dfe7b680b17df60ee76b11bd15219f3aea8c61915c1aff8. 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/fa8d231d-0fee-4a67-9764-070df9395d90.json and https://artists.proofprofile.net/proofs/artist/fa8d231d-0fee-4a67-9764-070df9395d90.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 0xb8341aed30038c34d8bed68f5bfae9aa7a7d595a4855a97b4cd4f4664c3ab84f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMGB2400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0907ef274369d4d1ef7bd89ad9f716a955311974cac9fbe17c082fd60a035bc. 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/AUMGB2400757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa16006ff219f89a1ce7d54d3c6920ddfd8ae35896b8b0c6c05cd4404c9650b. 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/AUMGB2400758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e311761f2b12455c867f6020474dd93dd93f4ce1f0d0495eae6167a0394b92. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMGB2201646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3f19b4b9ba442a9f68304c4a1f381b337f181385f9e84ee7d4d949dc10110f. 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/AUMGB2300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04842167052b0b0cad0b9ff3e57c9b6ad18ada74f6155d1f4462859fe48a3e0. 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/AUMGB2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888630a93ef44a9833e8e63baf2ab1e098808686739426f7d3b0fa441bf155f1. 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/AUMGB2400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5578bda9ce8c5930c2323e69c234c148966710763ce13e0d41ba5dabd30790. 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/AUMEV2021454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacb1c895fb1a287f2cd5009e13dda466ae1e25900bc7da574900a1cb5d2123a. 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/AUMEV2021459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeece34c116dcbb1321a9db4cd17afc684893daafc02e27d8bd3e9ccdc406369. 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/AUMEV2021461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e4bc6cf3e651ab330aa111c45f7d74a7326826502212029b560f37c59ab12. 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/AUMEV2021467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0c43f480cc926b8e11b6f313a8f09f36f73a49b04013f3e4939cd2389d861c. 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/TCACK1560523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5efe1db3e7e76b26e2913846569ad09a4ed38bd061868ff3609dc294ea81451. 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/TCACK1560524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb33b0919268b9b6e26bd6e571f3c705e24916fa856a720c661b78d736764643. 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/TCACK1560527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8bb4582c5fe3ab9c98a930c113508f5b42e53b41b75fe35ddcf52b07aea6b. 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/TCACK1560528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f4db470679e87639c2104d2ca6f0298977a00fcf34bbe5e73f9ce8bb71aef3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCACK1560529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cfe005c106c94cebec0f12a270a62fa22a4e111704f86eb91f3ed5b787cabd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACK1560530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe0c54bdde4422d83d2ee613f99c05f8bb7d01598125b33feb5127da2bd4728. 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/TCACK1560531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3510504ab41f7791eea881fcf8bd2a31feaaf982d746e8b79192bc63bc5f5. 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/TCACK1560533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f91814bb5b6ba7671857cc0b9797905e312e9cfc32122db24478c967e55083. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACK1560534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8341aed30038c34d8bed68f5bfae9aa7a7d595a4855a97b4cd4f4664c3ab84f. 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/AUMGB2400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04842167052b0b0cad0b9ff3e57c9b6ad18ada74f6155d1f4462859fe48a3e0. 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/AUMGB2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05fe52dd09d13f2e4e2169ad0c2b68ea514aff7659bd80eafc744628b7bb682. 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/AUMGB2400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3f19b4b9ba442a9f68304c4a1f381b337f181385f9e84ee7d4d949dc10110f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMGB2300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e311761f2b12455c867f6020474dd93dd93f4ce1f0d0495eae6167a0394b92. 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/AUMGB2201646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8edfd4b8a391433362e5eba3df4da7df4222c248fd023fcd545dcc91aa5a3c6. 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/TCADP1815771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3274975dd817d48ef4e40e9fbb3cd20e6bdd1cfc1c47ccb5e82887760d0dfffa. 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/TCADJ1743037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdef5c7d6839b14c2860fa399b925ba6d80cf1a805d3f501be3066c8f6ea5911. 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/TCADE1790208.