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 0x4d350eb66fc780b5a9d01dfd0908b8374a6cb5f07f55589901601511a5bba961. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c92ba915-854c-41cb-b920-3e2070c2492f.json and https://artists.proofprofile.net/proofs/artist/c92ba915-854c-41cb-b920-3e2070c2492f.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 0x1074a2531aed1ced91de2942c65866af0a400a9beabd261fd04af453c19e977c. 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/USFA91700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63f64858dc46ecacbee484a9753e6ef013b3e6ed44ea772ba85015fd8e12a4. 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/USFA91700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4066a3f5c22fa5f7f19d577ab69cc1efd19aae9370ee216d3f3cce2a71195. 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/USFA91700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c2a3de82663d483fe1f90cb6915360f957db2335d1b041737296458cb8714. 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/USFA91700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940eca7809b90c2a72b381b1a17e0c39541172f0e2b6cb8378ca0f3a2a7ccab. 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/USFA91700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3105b7f944880aac996627f4712d86fd9a78358c8e5f34fa70f32fe3bdc734c1. 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/USFA91700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e5a76d8cfc123776f60d36b5ee4edc04235aa8215da2b5c16a09aed9ac3e1b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USFA91700011.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824277f26e8c99302db163ef8c0c78e8256a9d15b9b1020e5f69b01d93b9757f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USFA91700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fbfbc14d58d0f0cb2def52e8529fceb019d984351b70d53de1304d575faa79. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USFA91700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41918d4172c6842ce624184fcf86e0f4db0837d42086b4ece39adbf7452c6442. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USFA91700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a9f00ecf40a59860e05b2789a0061ee66cc59e23af601f941d49cad09b177. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USFA91700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8edb627e7bc5aa452fabec6091e73d1f3dc63d1763e8803af8f541a434c419. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USFA91700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a42f15d61f3d9f66cc9110a32cbeaa8673c4e9abe1982f393e042888879be. 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/USEVN1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7096bd1adf097f7d7ca488e94ea02f2f6142758ebb5f7dfa1891a01779730e31. 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/USEVN1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5299512d1b4a2aa05a6027e7736e1d9579b3117644c638902099a9c8c3fa2328. 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/USEVN1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbd1fb6ce6ef12ec0f8f4440133e19927377d90bdb0c9606b87d28220de1460. 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/USEVN1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0be2bc77449a54b30a9126209e5471c4b979f49799d17f835a9a86932b7ee13. 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/USEVN1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe866f3a65416a428ef8d6a3aa1daaaa094291de0f0374dacb061ec60c4e18a55. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USEVN1800008.
H.I.M. Teachings Riddim: Zion I Kings Riddim Series, Vol. 8