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 0x2ed1a57045be1b72f7d19349b0c7e8d278ba061b6224ea14c97fc9e7febf04a3. 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/f677f0f6-9871-4a81-aa28-6575f9af973e.json and https://artists.proofprofile.net/proofs/artist/f677f0f6-9871-4a81-aa28-6575f9af973e.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 0xcb47fe046fd08346b0ad960ec50ad309d2089868401968d2b13c81662d501555. 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/AUMEV2356400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc5daa4fed1a4aae689c5477b46e16fdb5a3467c65f2c41fbf3164a98881b64. 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/AUMEV2416208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fff85a7ab692304db40877c5a80a57fdd57880055037d01490426f8d6d9b3a. 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/AUMEV2409006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3777d4b3bb3395ec2436d4b1be719c9ce8cbada1346f4e84f1a3de59aeb374. 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/AUMEV2356398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8075f3899eb9f3e41b50ec8cbacf319e9c408509f72ef0ab2c3dca081a266209. 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/AUMEV2244136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5e7a3d2589ceed52718362045bc9c696055947a6ac2e57a30c4b2b43fe7ce3. 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/AUMEV2422117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8706fc7510d1168be5f886e199a7c9b1113834a3fe63b3910b033495be0392. 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/AUMEV2422089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a2fdae65a77736980ec915c57c09b1b788b6e970fc3b5f9f7a22ef77b2227e. 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/AUGBT2313684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440fc8453d3578d526a56a67e437edd9784e3829299aeb3c872c4cd2133b8060. 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/AUMEV2388297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781315189e35aa4bdb2873e1bf8e3d2f0ceb7038dcc89c3e1364f39dba6d049f. 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/AUMEV2333695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546e8b0fb3c1e6fe268159a063a1cf142b252af4b8d91b38a1c841dab446f36. 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/AUMEV2333694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b531527a09d8cd852dfd697aaec3513edd9a943c6a1312ac720dc5d6d5d20. 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/AUMEV2361413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d9b276c9cdaa4d2a192c528e82cd86ad9fd46ca850e7216be24f9b7033e3c. 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/QZFYZ2128397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934bccdcc9d88af6dacd854c823fe6f21a83f5cee2f25404ad6cddd604c9d0f. 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/AUMEV2416206.