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 0x853858147cf895fdc502b5828bf0674e3bf01579eccd590b952a06cfd93ed7b9. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1107f6ae-910a-4150-93b3-4885aedeac38.json and https://artists.proofprofile.net/proofs/artist/1107f6ae-910a-4150-93b3-4885aedeac38.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 0xfe93b9f676676dd10a501f4cf63809edc35733139b1c4e350124c173eeb02852. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB8KE2410133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf56e9c7d7368a21bf6d8a507951910583ce6d0bd97dd058f2d070e0cdc902b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:51:50Z), 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/GB8KE2414528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088d1d5023730d871648f861d34d4fd930b03ebf060fae83ee6f178a4b6683c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB8KE2418830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d1ea384c0793214e31cda0ec1f13228ecb2a1c21769e37b2b66873142d9dc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GB8KE2423335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5572f486f0d046076191bbfb373fd414f9fac8a642ad9cfabb5bf4ec3d6bc9c1. 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/GB8KE2426036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86629e994500964fb8a5c20812afadb031c6ff8cf86aa265f7d30004431b5c3a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GB8KE2428474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098a28a7bb08cb585f452c970a0bda7b92c83ceb9dc519b87d4d8ae76782e154. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GB8KE2500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb7d58cdc2857b6acc314ce5f24400b5553ae8baa997db6780b0456faf49e3d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:44Z), 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/GB8KE2505782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3257dd63a3507ab27ad8e7bd3f9a38ff34f7df8026b22f15fe4c3f974a8d416. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2506552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c52b54bdbd1ef3269c9d7e3a1a66c09023a1048b325dd0c3cac66bc4e2415f6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2512427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ed0b623a9d095c7b0d674c92f96426f102258aaa6b986a50c8e6bcbd0722c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:08Z), 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/GB8KE2513062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7901f331d68685297a79d1780803f2e8c52ddb6cba74ea7a6894a3cca9122a4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:19Z), 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/GB8KE2515086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2bfb1481bc65e0ae9656da99ef30f0e5f5d99f4a93d6a8615e634508c18342. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB8KE2519204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747efe22b85f17daeb5c6779439a985b55f7c0aac8710e5553883a3959a165ec. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GB8KE2521040.