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 0x12adb5ee153c8a381447a1392c309c8ab699b2132ef856466ae3dcabda3ac6eb. 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/f993c37c-71ec-458a-9dff-bdbc390f4a16.json and https://artists.proofprofile.net/proofs/artist/f993c37c-71ec-458a-9dff-bdbc390f4a16.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 0xaaf8bd277af08fc6aa5dd0a3d588963293eb2a1af17609c773ff0e20d9a69946. 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/ARF412300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc9258d9f3862f6842b699ed9c502bb15d29b61e29ae0f59ecca1f8c40e3623. 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/ARF410701586.
I Wanna Dance with Somebody (Who Loves Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e29ef9390736c72fbf76e7165722540d2cc9e9115928d38172f45c8e0b44a00. 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/ARF412100163.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e29ef9390736c72fbf76e7165722540d2cc9e9115928d38172f45c8e0b44a00. 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/ARF412100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56317892c0734a537aa1a25e5272172ca09c0625563fb99e79b723a1f18adfbc. 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/ARF412200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa75f874d2b86d4d11ece37653d45b86f9c3d4cce34a8dd29aec5dc1a8ee4d9d. 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/ARF412200310.
Chill N' Mecano - a Chill Out Tribute To Mecano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc9258d9f3862f6842b699ed9c502bb15d29b61e29ae0f59ecca1f8c40e3623. 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/ARF410701586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56317892c0734a537aa1a25e5272172ca09c0625563fb99e79b723a1f18adfbc. 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/ARF412200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ab20c102156b8bd83c28cebe41ad545f9d276622bbaaf4735a2c4de2f6e9c7. 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/ARF412200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56317892c0734a537aa1a25e5272172ca09c0625563fb99e79b723a1f18adfbc. 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/ARF412200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa75f874d2b86d4d11ece37653d45b86f9c3d4cce34a8dd29aec5dc1a8ee4d9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c5c2a419194ab1a6f79e9698f432a42dbe6743a59817be1b827ba7d2c6bd62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16aaf2766329e27c091b9562e6fe591642dc0a9b75886479f8bec364b1eb28b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b652fe63088838758280321555fb2978ae15209937a757762a07997f4082a06. 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/ARF412400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b652fe63088838758280321555fb2978ae15209937a757762a07997f4082a06. 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/ARF412400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c1ec7131231a9f93f83613894028eb203b0c364d75cda247dc75b27844de8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARF412000156.
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 0x493f94fe011f110338e99ce621303618caa4de982ad07f04d8cdadc24e42f63b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ARF412000122.