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 0xec93227fe06a9f760b4a614ab2df86907d48afcda5ddc7ade28fcf9a8b454465. 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/165f0d46-fe7b-4e28-9d08-44700b6677ff.json and https://artists.proofprofile.net/proofs/artist/165f0d46-fe7b-4e28-9d08-44700b6677ff.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 0x667264b09643092db560b6052720e094c047e95ca6d636b3567550fd9c9bcbd6. 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/US83Z1928344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed42e8d78ac0381dc90635f2a996af94642b1aa8c9d596d041ae4a0a2068d4d. 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/US83Z1928345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36bf774ea19cdf6f827d7dc8611177dd9582e6cecd3cb92f3f7469855504e0d. 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/US83Z1928346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91405ec9908033806a08afb3cf177b9182d013decd30c0d2b78667284f85339. 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/US83Z1928347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3daa1212b5bf1e0492b867b262b7444c6aa8af4c15d2aa5e9b581554752e9e. 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/US83Z1928348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91beb4b182544563825e400035c39a241fc410b94de4c4e01f74f76b73f56534. 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/US83Z1928349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d2ba802526dadd0beb10373dec035e1c444cf4c3ce2cb7a4d860abfea5ac11. 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/US83Z1928351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d99bf00661bc58dbd3f20ddedb0522db6e1eb47198749a55d21450aba7a84. 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/US83Z2006241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584b5d60de0168f5906fc2c8af5b9bec4477571a2256cf5586e70095f77b0c23. 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/US83Z2215196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519543ec743c236ccc94d7d4dd54b3226312ed5d6900a24f623a74d1d31994c. 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/US83Z2101571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299b6fcf8a0291c8de05477880cd7eae8de96682de2a50582508a32e8b516bc. 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/US83Z2228572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e453cb9eef263a5bdcfe426594040f6a6613a6d03c95b462b3f0774b5e3e2. 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/US83Z2018322.
Alpine Grooves 14 Coolnest (Kristallhütte) (Dj Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e1d65c1892ffaca33a3cdb3cc7cb92e5659be3f4afc71e386f8b298f1c946. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEH742227357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eeef4ebcc2400690854e21938b393f061579aafc2215c55532b8f69586c91c. 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/US66W2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519543ec743c236ccc94d7d4dd54b3226312ed5d6900a24f623a74d1d31994c. 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/US83Z2101571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa79e50848fa433c3aaeb0dc99e9beb398fbbbb5669235bc41190e79acee6cc. 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/US83Z2001958.
Alpine Grooves 14 Coolnest (Kristallhütte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44efda7410605eef9c2be0f7cde89ae567c551dfa6fb08ce6aba84965db7f31. 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/DEPQ62201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10977d09c13799c26946b92737a833bee6e6603eae81404bc9cfcac73274ddd0. 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/DEY471981980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd513d1086e26f550cf6764845571260aa68973fb8100c9ad6d0636c4ce707e12. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CA5KR2102392.
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 0xb7c239b94ac97e070207271b8b43d96a4465418694066d34cf74a49331b2cccd. 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/US83Z2120024.