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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7555d4cec70fc9dff2d5b9cab89828d0848d2421c18a4a0a3673019dd57620. 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/1395185d-ce0d-4610-a092-598e1bee5d4b.json and https://artists.proofprofile.net/proofs/artist/1395185d-ce0d-4610-a092-598e1bee5d4b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330695f840857832a99769ce2f5291e3ee2655802349deb6826f931ce8968c89. 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/USWS42430407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7b98eebd9c834266fe6b034d8ddda7350e4c353b7d3823ec7d6cf36a7344a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USWS42430405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f270ceb63d33bb8ee8c82aa8a2bf25fe362b8bfd6f1b5647cae81a4647b6a. 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/USA2P1870000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d78ed5f419b22d77be625a65ccf930c71ca2c58762d3a97b585f11acfec7b96. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USLZJ2212382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae818ee0639319adf81ccf5e24cf84b0b6b34e7521fa5d07154a525284c70dc. 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/QZADU2214608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4433be817becb724f0a6320ed6f918d9316f76e66cddd91517e58f1dc74c49ed. 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/QZW9K2345274.
Humming with the Wind (Liquid Bloom & Bloomurian ReImagined)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb45509738335922c50e991c0d13f83d273eb3d041f76ae3da10a6aa4cf449b. 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/USWS42430402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aa8ff8e6e116391ec421ea6766cf08f33fbcb3c7ed8c1cc2d2ae811f69b807. 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/USWS42329201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e51c7d12c564cdff18d0a9419baf918e4f6bf9265862d61fb7d0f71135041. 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/USWS42326901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817c0789f6513482c9fa61a9dededc099e43b6a13593c0d0aad706411642db56. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USWS42326601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afb8f258d2cf2d52fac3b07527fd1ee5b98b2a83983109a698f4c91827e0a0d. 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/USWS42327101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc8af360493603bde5ea3b8d71cc1b50ef1f4a5ee5f0636b3cd676f5cb1739. 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/USWS42329205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0881b25fa965c64e3102d552edfbfe3b1c43b87d44ecb45a3e1cf8758e0685. 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/USWS42328701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779af6ae8616b223da9a2aec8e31d2a160b7cac9f4d32f1548d4f5ed9fd85d4c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USWS42326701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2ecebda28830d38c2b4f715f100d334a02b27462fe35faae411ebed822415b. 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/USWS42327001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e6c739cfcaaa85801fe83ccd1891a321dfb5a1668e3d8af5a405bd47bf76a. 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/USWS42328801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0881b25fa965c64e3102d552edfbfe3b1c43b87d44ecb45a3e1cf8758e0685. 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/USWS42328701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afb8f258d2cf2d52fac3b07527fd1ee5b98b2a83983109a698f4c91827e0a0d. 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/USWS42327101.