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 0x952507ca7b086769d2ff8316ffca939e99a94a96473a07fd5455c61a9a9961a4. 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/f38abdb1-b72d-4ce9-aab1-a95574357b21.json and https://artists.proofprofile.net/proofs/artist/f38abdb1-b72d-4ce9-aab1-a95574357b21.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 0x2f7a64a23a88a7784812101d14939bd7427a66761c0edf187db01f44bc80cff6. 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/US83Z2301965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0ca9dd20769e1cd3de0b01d9c34fbec431d3dec2576b5f7800d197da2c82c. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/US83Z2301966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ddbd890644fff077f4e996d2c61dbe9d5a429a27f00073dab5c6a4c66be36a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US83Z2301967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61b2cac48470a62ac475d18f127ef2f463c0504bc4c6ad62487c46cd483ce6f. 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/CH7532000001.
Hug Records Compilation - 6 Years of Love Foundation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcc7fd450547402699f6b7381f3ca139479943adf4d1e461543e7dc0828e4ee. 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/US83Z1909673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7192a456b843fa909e4d02a7e7ce51a09e455ed0a42a7e6d21fdf53a8e5a8422. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2233500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc597ba3d8ab9e2883f90c3c4a4874f5e48b141abd08d451a45b6acdc9e2e206f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2329406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fe7149bc0ab873c0c760a3f143c95a644443d36ea4ae116b78fc8307571bbb. 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/US83Z1922851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe1d22ef7ebd861b5e177ddf01ee6f1a65dc41ba5d5fd01e86eefa3881f105b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US83Z1922852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31f13f9dea66e6805ea4130970fc57ebc58454c661083501c224fdde6f41454. 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/US83Z1922853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778146481c4c3576dd3d2a5b2a69b46e1b888cff4f7c127645179aeb1a83d89f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2209533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab74d39cefc66bf5b3ef2a471765b9496986431c6dbb6994ddd8ce0de2b64f. 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/US83Z2209536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83c0e553bbd432567da5e948d4f4e01b1f6465c50724dc02dcf700051da947. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2209535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b9218f4bf5e5c989f63f073f664ba14f1319e70040b8e4ababd3e6a8a6ef96. 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/GBKQU2425223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7192a456b843fa909e4d02a7e7ce51a09e455ed0a42a7e6d21fdf53a8e5a8422. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2233500.