1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1c5952f98d078a5b1ed11acc31edb0af2a75f7bf890e2767892855ba726c98a3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c28fb87-2cf4-4790-b4b5-dd9540cb9c1c.json and https://artists.proofprofile.net/proofs/artist/1c28fb87-2cf4-4790-b4b5-dd9540cb9c1c.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 → block OTSBitcoinBlock must exist at that height 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 0x779c489c94de9a070708c2fb93191e7a1ac7cd0cf6308da4d991327e6f31bda5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZTB92274312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b718958f81f3f5747c909452dad5c2606cad87483c3b14d34eeb3ef95b59903. 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/QZTB92274313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c825dde4147c4f69f31f9f32145ac6ed04cf41f24ed4f8f31ce3ae1c8f051. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTB92274315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f4be688f12f542067a54399d8c283940301722fa3c8b7742cf682e5d9e2c0. 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/QZTB92274316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8535c397459fd035f26c3c13af50c8032b3bc014dee9e1703338f0a5a4f0ebc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTB92274317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483fce6a4f873aaaedf7266d0e458468525879204e2edabedaa76564ad0b071a. 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/QZTB92274318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b7e52bd6cdec88b706ef966557cacfa672497b471931aa45115770d6d76373. 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/TCAIQ2499977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf10d629854e75fa35511ec06fbdab1c5f5edf4b34fc4e34853cb1fce796cd5d. 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/TCAIQ2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fc542641763f58c76b18ab4de74206867959fb383d5a4c6442fa724762933. 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/TCAIQ2400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc4752c0b4d9f6384db148a586b514abacf1bed66929565e03c0bbaad073830. 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/TCAIR2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e7e869b3166e2f027fa3ba5c5cb856b746dd25f48c6882c6ed1d1b24527dce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAIQ2400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d4c9d4d2101bd1be7b91c6640ca5db00b192605edb4b41447e91c267855e5. 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/QZKDK2368890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51cf5ffe0747b51eb0eb3fd3ebcabdef7c56e68d1cd2ec04052b4af652fe41a. 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/CA5KR2393767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5df4cd09055983def5095b7b02b7604fd475803db29b949bc283b5207f5a6a. 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/QZG2X2405396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51cf5ffe0747b51eb0eb3fd3ebcabdef7c56e68d1cd2ec04052b4af652fe41a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2393767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7efaef9fba5bfd2ed48e4d6fae515b1d6b5e6b703c6ececa54190985d6fada6. 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/QZMHM2526042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4305f464f4f707ef58e7d5cfa1361921bed910c86112da88254645647c127f. 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/QZMHP2550759.