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 0x0551c5ae85da1dfc0d59c2208b6c5febdc65c756b379169e34c1f16755867cd8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2461a42e-373b-44f6-8936-397759b2d6c2.json and https://artists.proofprofile.net/proofs/artist/2461a42e-373b-44f6-8936-397759b2d6c2.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 0x6b98a4f20d0ed20c8e9f6a95c346b6a22a1a691dfc53ef0cabfbbc9eec3eccf0. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/ITDI32300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda61a5c57f7d8d25a68f61ba77d3d72ac7f7c915fbe17156f5364997b54c98b3. 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/ITDI32300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79504e7527d0266adfb94ec294b53e5e147b00c97a981b994bd4dc1b60c22315. 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/ITDI32300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149b2362ebd80482ef66869b1d248f68ea10158c18a26d2aff1a5d918ec0a2ec. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/ITDI32300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b596e4fcfb7eb66b088c805d7bcf8d31b08ba4020b2cf418c7ba664f6d03654. 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/ITDI32300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1194d6d400f4730b3fd583d5d03196a723df0b4d595063a74b96421ba2018aa8. 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/ITDI32300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd796e61d0ea044fb40476f5b44033ddf27368c85b76f8ec2f0b0a1caa2708a6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ITDI32300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dcecce57158933eda037cd0f1ddc994c938e1901a8a6db5354f087aff78ced. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITDI32300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca5b88b5735284de8c40430906a224d31b7c5cadb4d945d95a5e9ed16487282. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITDI32300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56ddd27e589c23073d9a0cc1d1fd5e045323b6cc1fc01d586f83847e8769bc1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITDI32300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079968ce92201ad8e8079ed7804da8368ccc047a5263404f05a17abfbd064867. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ITDI32300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075dc38d49225c8768a8fa013bbe423fa34be2d3584dc4675c39dfeaf31a45c. 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/ITRWL2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2b92aa0a4dff2791a8b08bae4e24196ef966155e356d038e7ae3e75144c791. 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/ITRWL2000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8341a27a35c0b60f203d5a2784c6e6633a3b044817b95e972e248531654c545. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ITRWL2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7767ce9428829d90a72b372034cf8f7bcdc7b1ea96aa6b35af40f82814f6db. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEYOK1629089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d272700f7ad95ec3a27547367e35ba25616ad10a1be230a06d600e456495b5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEYOK1629090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449cf5f9119a8da1248c8a615b0528a195d7593b0f13d361d43526f2b1aa9902. 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/ITDI32300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c3f34048a7931cb9845ba658abb74b218932dcbf10c1bcddc295ccaa70cd1. 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/ITRWL2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb36c0dcc88def68d160e30cf850a45030e3a6635f95d880f27444934ad36a7. 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/ITUM71900276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2d8a23e2cc62a3e50a5ff92a7c5be317c3909d45673af323e59bc4ecb214c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:29Z), 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/ITUM71900265.