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 0x230f17a8dc0b16570e61a8784064a56e11e7829d87fce6866f7825e4d2c38bd7. 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/30d85be2-d9d3-458b-afe5-13efc70ffdce.json and https://artists.proofprofile.net/proofs/artist/30d85be2-d9d3-458b-afe5-13efc70ffdce.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 0x05adc282167f7e2e2b044a92260b1f61270708b6957e489a95f9fbb1d354381c. 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/BXG6R2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c722370e4cb83638be887e8db6cedf74e8f1c21dbbc1b2a5d74822fb97194f2. 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/BKOGT2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c4cc56935761c287112a0facc834d88cdb2b783f3969d7b3c01183a3e2c97. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ5AB2444619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31c31fc68e5f51e91172391fcb6ad5ed298f77ca6253e5038467b730f90a9b. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BX3SG2300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366f982b5f0b34824a5708c36473c4c6c0dfe3e6141ed38526c39b44daed8287. 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/BCA5Z2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05e6cbac5ca7917e16a94347c4f3dfd4e989a197a2388cd582171191ab1e6c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCSOR2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899eefd0672dd3ed618d95b61537622c00180e263ad6470dc727109c5aa0d554. 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/BX3SG2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd735e7251b77731c278e4dc95c7f1ba6184bd7516d888bf4b0f4856106514e. 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/BXG6R2300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b43554ff66342f15752f642e3ae0376c512390efb9849221d4b941cc300b16. 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/BXG6R2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eda9abeb3a5eb9441994ef43c1b4671a2fcf49a9ee5dac5b3b6474241303fb3. 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/BXG6R2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58341ce2aa4f411abd16453ba0d450ddc7947bc962a37e4f608a6232f56fad8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BC3PG2404210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b23f1c594186476ef5de681a23233848820c0abc093cfa7b988c5fb43364a5. 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/BKLY42400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6f1e5b423208dd4c4e65627e1c31a484b396cfc9a9c46edd3e06cf43fe5c66. 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/BCSOR2300124.