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 0x0cc23d7d8aeb6f9a2db4721666d417c874bc54bc4f68ae1bf64045385076db41. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9602390d-d43e-48a8-8217-79c363c96096.json and https://artists.proofprofile.net/proofs/artist/9602390d-d43e-48a8-8217-79c363c96096.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 0x020c6394f40c0da859d9620ee783178ee8b64f0def537bf4d23e984250220cf4. 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/QZMEQ2234368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b320efc980b3d1aa9563a81d5f392fc1d421c2bd3362ed86a8c20c1129bac6f. 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/QZMEQ2234369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f30e0ecadd094fc641ff9414305278c2e4aa0ed4e6eb0558aff2f832e1fec74. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZMEQ2234371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e911405c44c82aa3d8477948371a159f26e461fcedc4138ff68ac03b08fdb00. 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/QZMEQ2234372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10da22d5596abce21ab2185c253a154aa408048a2c5fce58a709f59e2b1bd17. 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/QZMEQ2234373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a91bc761c891401a77e1c6bf2ceb373e5b4fb87414f3caf40fb30f438d1e93c. 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/QZMEQ2234374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68dd7c31bde79b8bcde5e1a622765fe9764820de35597730203bfd79b67351d. 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/QZMEQ2234376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d9ab9737bde20e0fb7297e4ba4baace5fab7ce664d6bdc5cb624a07489540c. 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/QZMEQ2234377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c5b887d4c49f7109e5e5e4e41ccec0f8155909d54adcbdd341268de3f6e76e. 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/QZK6J2175910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7fb3e0f90a947ec30bd1abcab006adb213c824979ac24590c5c47da2ce5d3. 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/QZK6J2175911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49777a2565b79061b261fee3506d8156d37dd31cbf9f20c06f3d6ce1a634db8e. 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/QZK6J2175913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc98f0ead1f828873da7747c39df32b2eb8463c76116d08d5548d4e95ba9247. 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/QZK6J2175917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb6c69be060d7a262ffe51440f4c86de92e3dbf22f65aaec1ef7b3649024294. 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/QZTAS2396530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d77a71cba1724e6554c06836ca6984bc05c88368e3b5bc28b53a48d2bafaf6. 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/QZTAS2396531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28040104a05caf20e836daa0708fce13431b333064e4712e23693dd5642aa21a. 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/QZK6L2152306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cf112f8c25482196230c8b1082abedd832094a5bd4807877cfd610ce2eb350. 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/QZFZ32171152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63022810c5894f4bee4fca57d2cd8eb5f5abd39a7f740ffc14f82f3a278ca629. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFZ32397468.