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 0x9aa2626f864d2d36662b74f796af0faca5ad024224aaa2bc30075b23bb96c44a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/951abf79-732e-4379-9bd2-5d9d15636c7c.json and https://artists.proofprofile.net/proofs/artist/951abf79-732e-4379-9bd2-5d9d15636c7c.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 0xc21273b552bdc326e8d1dcc7dafa6dae46cae185e05d1c7cdfffec54c59b3c0b. 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/FRX872435809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e91a3614e147ef19bc44fb54124e5e8e17c6d7a29abaff7fbdd861105fac301. 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/FR10S2509137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda7a912f5c58d73c16943e5bd3d1f101a0bf57672f7d3106f3b2da9a734929f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S2508239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7802bceb2ca7f2e6bb25c55b9cd9a184bfd23805cab92bd64015c1f698a443c. 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/QMFME2438327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b5d283ee4c5cd9a6ad74152118cf45fc725110be33a768093bb43209ca4b33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0P2402892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cbb51bc1b09c85f951ce43890123ff280d04226cadba5100dd0ccfa98a7dfd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0P2436862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f038afe08bfd544fc1e1cc9835ee9854df0779005f61dd8bdb879cebab5991. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202415480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7836adab78dc8c9b505067eca9c663f3fd637b640d8de1131702f51e23f2ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202484830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc743868687ce14e65d330ccc0fc70a3225960f178d247c91165cebd965776a41. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0R2312054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde60fd78e3d45bfdba8994167f8a4b961365fb5d0c08cb2c953da863b093768e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0Q2363883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde0e3f8cd0230d661ac8e033e46435121b70cbf2f962dc77488d3b0138dc7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM3DF2295118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d3e6df350404f12a018af824b11b47e2119e57f398101845781b081aeb45e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0P2358089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4bcf3b124b1a463cc375aeae61b256ea02cbdea33929eb54a80ef2bcd47d77. 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/DGA0M2368836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30fba72ec753cdfb848b01c8cbebaa4dc16bd564075ecc4cfa26de22f112f7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2310030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e76240f0607da308285b75803e0386039c37ac7ac2a37113c5d51fb9cb382. 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/GB2LD2310006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b834abd018bff25ca0832c22cdb5cf89f056362dd7629e46c12e87d5708d586. 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/DGA082288792.