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 0x99a5de2170e51b62a703b7b8e5ca5f4ab500736ee40f6515158bdac5275441d6. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a356ec1-5607-42cf-bccb-4bac684d2bd8.json and https://artists.proofprofile.net/proofs/artist/3a356ec1-5607-42cf-bccb-4bac684d2bd8.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 0x7d4e0837c6134d3c6a99bde77212bc1d0ed5024c8393782129348288fc6d2d52. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEH742217184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b3e50fd5424d62f36949af9f3a4cd48c4e7f172cc50b468cc3c60faae97cd2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEH742217185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa461a0ce91795f2cfb3e8421db2b5807e769bfb37c00d2bae7532bd583c23a68. 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/GRLP12222293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa5b867162eb738ef6dda3f37694eb1d39fe071282cb98322c4b559c97333a9. 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/CA5KR2235801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a7c50657a0504cbccebac75187284b64c1524b03a798deffd3c0fd0933176. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CA5KR2235802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe18dd791d654f5a664b4cf9c59b0d6d06552ed1ff6565509b971afb9f0f71. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/UKR6V2117585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce34adbe749acb6492dfc1feaab7f15e1c677e7011983a9015835fb105ff2fb6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CA5KR0022440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a596d099e6406730dae5d4dfb33da5b1e3343390fb4bbf3adf004eb52069e8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBPQS2100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a684745ea4984d005bcc888dcc6a9e0a8c3bdaf3bf60967678a719940d9fe6a. 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/GRPX11990491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff70d3379bc05b7fb36a93e2bacbc7b80c567dd04af4ec838e64f3d760db8b4. 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/GRLP11901922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1b6cb4f142e62fe6eee5e0d6849dabc04582b8cb410ced8f6178dcf510b8b9. 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/USNRS2040164.
Come Together (Kevin McKay, Fhaken & Yo Land ViP Edit)
Come Together - Kevin McKay, Fhaken & Yo Land ViP Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef48661beedcddd3d1f5f5f7f1ddd14eb7fd55222fa0650b584f1775040676. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBPQS2000267.
Come Together - Kevin McKay, Fhaken & Yo Land Extended ViP Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e23a7f18cf9fa04694cca9a1f7cc3317e27857c3190136e737d12a60facea9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPQS2000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371aa98ca464d4f6efdcc458a90b6d462bbe292e642848e3b0c1f7b2eeec1edc. 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/GBPQS2000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0babc90edd2a3ff127f44eaf084a092bed4e5a7dcdbfa140805a6c07138f8f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPQS2000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fba7c11a8dfc60c487094a767e55b33af95761a9c4e48ac03e862856933a36. 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/GBPQS2000158.