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 0x36b12ad05151eb0f5f47a5a8103d09e491e05d836b9f803b5ff1736948d82480. 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/c3bbea5f-27f6-428c-9f08-44eaa9d43344.json and https://artists.proofprofile.net/proofs/artist/c3bbea5f-27f6-428c-9f08-44eaa9d43344.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 0xb462be860c4357105cb3698a3b7116caaad917814a5fd5676ef891b367b1bc5d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAM460701484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dc57ab35a4a9fe4dc126624c43efd58ec9ad7900734574f7b2c41f79d25d9e. 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/CAM460701483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad63f026000771ead877c2c446f2b9fed43a1b607041f581ff864ed306e5d22. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:54Z), 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/CAM460700598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b30af7d065d92b33261b91a80daa5b576a922fcc8d268368350b262795b47. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAM460701486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c27aba79409f2aa3a80a7bcd08fb29d8981a9320cf6ac5a2163f379e6d2f4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:46:36Z), 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/CAM460701487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc30c983bb796bf22399c531a5255d54b17514887c5f5a25fd2e3832f3a4829. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAM460700574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6b0e5693e9320ec1cfb70e6c78d84eebb4892134c7803c679ac6234054008. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:30:48Z), 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/CAM460701482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7f970e5781c7844b2c0e0e1f4cda1c08b29f9decb9e5ffaeb03eab1af4ed03. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:43Z), 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/CAM460700600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8501de7cb0e6892004424ef0b53e699f449b1ae57b44c2c0bda050c860bd2f58. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:14Z), 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/CAM460701488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53c14205ddaad49a6d5e14f0417fc665992f263229b248f1e40c3969cf345f6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CAM460700572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4a5f328fdfeff373d2ca60cb50bd976e0b2886ac0df6fd6084c2b659a9b9ac. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/CAM460700585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da72984341e10476689a6a7cfa3f337e8103d528b4354cb71b3f6427a51005. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CAM460701489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d239ef8fc827da7f7ac27dbeeb0fdad8bd48858ae17578d23545be719b107. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CAM460701505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb129313c796b9f6208267b4ab8e675c08031172c0dbda3f3a57fe6904bb7f0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:28Z), 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/CAM460700595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419fd6f7d9be8d7def4920fc484c75a58667af7469ba205bcdf7a7bad08a2232. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAM460700596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0b5a4f82e0332a5b93a8ffe1a1e95d356d353745a35f2d402d96b9353f45ca. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:19:43Z), 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/CAM460701491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991b41f47a461cd21598606f4de52e3d2e83f684211b2c3a1a75b5525bec671. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAM460701494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9f5923cada61cbcf8e5e6c88a28045c90eebe502298d6a91b3eab6e37d1f2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CAM460701513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdda25aae1846eb43429d2939bbf545ebfe8b254d98602af8a042e7df70105a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAM460700575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a68974ce2f7ba988c131f84fbaa1646d60947595fb9fb186e5d32b4160f30. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:13Z), 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/CAM460701501.