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 0x269c1ff990c6e5262c7f57d94e8c854d72746492717d5b5c4c92df246e719aef. 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/9aff9b84-38f2-4865-8b9d-cd168e29bdbf.json and https://artists.proofprofile.net/proofs/artist/9aff9b84-38f2-4865-8b9d-cd168e29bdbf.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 0xf479fa9a62fedfb8e12766ebd5b63fa72253ddca43d442e715ea0583ff512072. 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/USUM71708253.
Quality Control: Control The Streets Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf479fa9a62fedfb8e12766ebd5b63fa72253ddca43d442e715ea0583ff512072. 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/USUM71708253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c6f0c0969a8c58cc46bedd67014ee3bc1a2af6f48c064b55478b81650375b8. 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/NLE801900244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef10ab6017223761263c0c0da92995c27758ef82dbf97ce15bb6c256798fb32. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLE801800048.
The Wonderful: Stories from the Space Station (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938ac3ef1f6b4afef4fee371617227ef889f41638faa12ebe7a93e68b38c9fc9. 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/UKWJG2100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc673b78ae64f70bf05bb74a74f60a6ffb14fb962425697950decb620f5d1c30. 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/UKWJG2100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474ae39d8409891d18f2fc58e4c01bb4da30546b2bad253281312ee1f24b5f8. 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/UKWJG2100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb63aaf65bb1ff59075d82968fc5a712b0eadeb18e15cab3a8dc469aa975aa3. 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/UKWJG2100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b12422283fafaa785fef5642f07f88ff971bbf6c07ad867f7904f6c8c99e833. 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/UKWJG2100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d35d73c3cecf799df89c5b878dc1594fbfd9d177d97344010382d6e34198a8. 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/UKWJG2100329.