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 0xae8532a7d6b689892b86cd2653221088b5463bd79043da8a971996e16bc30207. 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/99b80a36-bc57-4081-83bd-c10ccfda20b3.json and https://artists.proofprofile.net/proofs/artist/99b80a36-bc57-4081-83bd-c10ccfda20b3.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 0x8960d90c0a314d30090e5b1cc3fd63f48234f54d07f9cda5d669b758d25d62b8. 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/VNA0F2404157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb0657ec01e945368cc8aa67a113c4398f72cb99b502227988623e0d6cfe09d. 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/VNA0R2400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa473f6e9f448f1360c91612ec8cfe6f430cb471f6ea45f16594f720f0fa093da. 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/VNR011133943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b746334fbca40eae66ed97fb414719d331e06085e2f147642e70bf40eb952c7. 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/DGA072429656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7295d506387e352bd6cbd0db59ab8fbe9769a13563578ceeb0cea3a7ef90cf4b. 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/VNA0M1934019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092cbbc2037152c4821213ab568a379fb121c15deff4c15c09b14c14e60a3b1a. 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/VNA1M2282422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5555db7e336be6df6274c12312d4dbfec549335c03e9a9066564b17ef1cb4b. 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/VNR011133368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f6d4cc8cfd14d97c13eff71251b6ab01791a82f0236bed50d858ace6ef2c2. 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/VNR011133246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16569a4940c93514a39de0834e162b631ff89d84d4a65443d3f13b012db1fd34. 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/VNR011133095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828786630fdce68a1dfdadba3d4c62fbe4a9a601a43a2b90181df35a0bf28f29. 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/VNA1M2205710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44ff1149bb545e42f7081a26e6ca2ba7c0e76fbcd9c99bc8564db23d9eb471a. 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/VNA1M2202659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342caa9063c90254dba6888e53a42afa9b1b9deb1c07ee0d841a1bb032f6d913. 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/VNR011132085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f21584afd809434810c9a9ce8ae8fa7a2e982667bfe1c4bd5d38cd58007a804. 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/QZWBE2288725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcc2bcc8c39174e15b1b54a319fd53e27fbe0c17f2307b9ddbab2205758962e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA082279369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da718ef56cccc4b6e8071da032ed05cdcacb1228596427f498fca26fdab1151. 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/QZWBE2267543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac6013c12a348bc86be6948e7c66690cdc4939a41038bbfdee27cf1298f9e76. 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/QZWBE2267568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcbe9176252af37795c4557386533893c4f4b4ea3c13e5b4a822475e44b54f1. 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/QZWBE2245336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f75a29a784dc9d614e62103abf7b5b3c006a659d15f55954551230e16fad412. 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/QZWBE2244833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5bdac01d0f95862e0ac38d99a9a3008f0ab86cf1a9bc87b701c72477916b52. 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/VNA1M2103694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f1aa730a156a08d4212f164acbbaa1e8a3acf95ce636d519d1a29a05af3c1b. 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/VNR011131180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953bfb148ebc12fbe1c511657d285128fb0424f9bfcbeff51ba9750c5f94c3c. 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/VNR011131181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2409595a5f279e3f3dcee15636eb07a741656f660db605ff6127d91d223e69a. 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/QMFME2247924.