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 0x1460d3829ab428833f3fffcb90d27c3bc3c57a0e66d0ee05d9616d293df1871a. 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/cb0b2f7c-1c1e-4612-a9f1-1b724970d90f.json and https://artists.proofprofile.net/proofs/artist/cb0b2f7c-1c1e-4612-a9f1-1b724970d90f.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 0x58d100aee6547c65303e306f71a7d15471526b7d193e165a098a7490a7afe9fd. 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/DEU671501127.
Silence (feat. Kollmorgen) - Mollono.Bass Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2cd0fe22b87b8ffaf9a4180460c78506ed33885638da3082c05ca535cc526a. 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/DEU671501128.
Canto (Dole & Kom Remix - Radio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfff3a90dcc606db557ec345961bae5de1d80275ebd4014d07bca455b883718. 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/DEU672300870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a55c01af04c62c73e915dde95651770806ea0a7b3ff0c8744d2d1358d749f6. 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/FR85U2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd7bc55536e263a7f2b45764c71935b3173a3ff34685d39cdfcdcf49872534. 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/FR85U2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144852788c0fb88e3577eec2f2de7af39e4a832fcc42e032082feab060bdc1ab. 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/FR85U2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76ebe7fd31e23e811242075ee7ae811eaabece79dcfcb5e80f1059a99ad989. 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/FR85U2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd54c0806a1de49cf544dc258ec17bd4ad3f4e5b779a46be16075d701dcd7c20. 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/FR85U2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4317dec5fd08024a65c4606fdd28cdbdd57c2ae0d746924507a6d5b7a66ee3b5. 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/FR85U2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a84a0dc80dd72afcc2d96ec7389ad1ddcd7350e87b056d0d6e0c7fa8c57e4c. 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/FR85U2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c9f438dd11adf3402bf2dd50837583a43b0b652a0d5e79bd5ecc94fa1b8f6e. 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/FR85U2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f995f8b5c225ca905c6fb09e6d43727b8e80e49a7eb09a270d4ee5f6da0a734. 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/FR85U2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5bf4cf820fbf25f0a03c4e78342cca3a9a346c742c967dfd9460075a1ca7d6. 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/FR85U2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe483bace0d36496790b53cbb92decdb68f39bfce55c0b319f47eb16acfd435. 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/FR85U2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6a8b3eb9c0cd095bba10d3feaee7a5d50650219987c7593a3f293b0fa7f363. 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/FR85U2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b7a03d9df0e910395fee68214b084834c76e6bd46ac2becf9778e44458075. 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/FR85U2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9ff236c47142064afd1a98fca88c0153b583227a4e2d5cb72540c9c43287f. 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/FR85U2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd380130b73b1d1a1fe79d687173f3c712cde8d0d8ea543b1c062c39bdf8cdc69. 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/FR85U2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea2480d831fff6ddceefce429989fc822ff8f9a36c06ae1dcb838f78bfff79c. 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/FR85U2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cb2caf22354d5998aef6edd88ad49ec582ae918a67d2b06b215a8d5d03e76f. 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/FR85U2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241f4bbb2e379a358ffe1e60e4cd44cf7d9be96994cc194d66b13d770345146. 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/DEH742501478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0859a486f1243fd7aac5498683f066956c89962ecb38c8353378a5a1707741. 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/SE4MF2400661.