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 0x82d243982a5a1c5071b1e1f9f04f0f31e8633181281efac95121d81be70e6fba. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/149cc960-b099-47d2-a2a0-898f48809bed.json and https://artists.proofprofile.net/proofs/artist/149cc960-b099-47d2-a2a0-898f48809bed.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 0xb9255f70bbfd012041522f782de572d57c9c541d157552c0498cc78866936589. 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/FRX762491532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01e6bfea36e1660d2ad95e0931f1d9642e88eb335efc4653329acad211ee58. 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/DEZC62367640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f0174c92dd5d0b84ee834935207edf8ec0f94b185afec6bfdab150fab604fb. 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/DEZC62347967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10df15e961f9fe8d34cfd752574587eb495c6877dfb9452b699d5a628c2d3e75. 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/DEZC62367641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d6303d11b3d60f0f8dff5a5da4e439e97ec0587b3693d74557dab5afda9ab. 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/QZTAW2488976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0efc5b689a3523902cdad10bf6062b253bf6908e2106ec5daf6d7cacaab4d. 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/FRX282319009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34854382b65e39631dd4f8bd5ad3f5a12a5b2a31353f05c9822c86b46f8873f. 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/FRX202249105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8344a5f0c76ba030ca0cc2b849f40fb67b535b1c90d5425aea477d419d4bef. 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/FRX872159954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b1ebddff468993980cd679496ea56d70587c6e42647ff354af78a522f702f2. 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/FRX872159955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aba280f01bebf83bd3a170952713aad1c2fcec96b20b8b7e20c81de74517f37. 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/FRX872102850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740042df2794006603a661a803e05e3e8a7bb5936c8d431b76a8c7b579612b00. 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/FR10S2525260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f230bdc13a014418d57f4f604e67b3e3af19f3662ac3b6c652fbf45c34985be. 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/FR59R2597775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8a3100a4b09d64d96963f8437dea5ceaaff0bf8c1169d74c545ec084128727. 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/FRX452531917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4bebb0d0c036677207448ec04d912628aec18292a897e5da071575cc6cbac4. 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/FRX202542987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f230bdc13a014418d57f4f604e67b3e3af19f3662ac3b6c652fbf45c34985be. 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/FR59R2597775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740042df2794006603a661a803e05e3e8a7bb5936c8d431b76a8c7b579612b00. 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/FR10S2525260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd497ec3299ed2c3f4bfe10e85aaf5a050336437232fef85ad7f18d8917a9682. 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/CH6542468211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a07f8d2563529cc651affc6c25f9ae9ce1e1a84fb8ea090309a1371c66fcbaa. 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/DGA0P2447782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd497ec3299ed2c3f4bfe10e85aaf5a050336437232fef85ad7f18d8917a9682. 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/CH6542468211.