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 0x2afbc88893af89455f770748bebc1208ef76ef939c5050c68ee14de6650c6e85. 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/fe7730a8-f871-4bb7-9b0e-d3ce5ce9b749.json and https://artists.proofprofile.net/proofs/artist/fe7730a8-f871-4bb7-9b0e-d3ce5ce9b749.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 0x4a974dc5759df93811838c463aec3ccbb72806adec5cbb3f03af8283f716b031. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBSMU0035087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9727e0c0b064e139fac3b3dfa7f3e7a8f6e19fab3619b37054816f33e8825c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:46Z), 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/GBSMU0035089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497b1e6e3c614999c184cc61a0cece676e1a7367573bd65d895a63bbe332276. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/GBSMU0030882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec9c7e0c88283e4ee3f0c0fbca413f24009fac47f286210488346c746ecb9d0. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:43Z), 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/GBSMU0035109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42a1f654d3e86b5b5d3ad4206ba3037c24cb5023d35ae4a927ca71408ce793a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU0035113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832a5d8c21218326cd242d628ccd430ccfe034643380577369d5cfc291daa02f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBSMU0035180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e2de3f423819e1f18dfc4071e06b4e6732bfebba03216db3d6a3f5af2ebc08. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU0035183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc75b0570c91a91a44f19be84986dbff1a369f50272f53590b7b520f519612ce. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GBSMU0035184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2105d83e4ee28a4a834f95b7d8d7650f7f6593fe14041abb58a23d5b19d3f11. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:30:51Z), 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/GBSMU0035227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829476f73c0481cc5f08e55e14fb1a03786ddea9da72b49e55516b6e179258f9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBSMU0035229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6379c78d792263474911dfe3eb62bca77629ebe0cbb05fb30eebef5835a63e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU0035230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a24ee7ccc17a5c81dcaa3cc921f1b75bd303bca0236e08e7f653c10a19bb4b4. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:10:30Z), 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/GBSMU0035234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eaf6a53d912d296947138f3f0740a225052a1c3401c76ac16136cb45cd57de. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:46Z), 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/GX8LE2421625.