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 0xc3950d450e22609430b56191cadda3c50630e93ff015321242904c01bbcd261f. 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/58a542c4-144e-41d0-a2b0-f5dde542c8eb.json and https://artists.proofprofile.net/proofs/artist/58a542c4-144e-41d0-a2b0-f5dde542c8eb.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 0x30a0b6266bdbbaa85d1c9af8fb404508632b9d6f9d28161fdf45df698b4004b0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE6SA2086737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213825348e66c950726f889effa3a0bed891bafe23a46bb59adef02815bf8c8a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2198517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfe5737a02a592c0c74c8e653ff8ed67f5602feb616f2f053fb79ee2ccbf2f5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QMDA62106354.
i want to believe you, i never wanted to leave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bff335e6536d6c89fded46403f918f8f59ec55bc7dbd500709191535e1d31d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZGLM2265668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d8e1be46f28ca4901d9177b04cf1c736ca400b8e204b8945d6787cb1d3fde. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SE6XW2257137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ad0f9ccf311df0e1004db0d0546aaf8b0f4a4b3f7a81e9e9c30c6ee1cf37c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKZGC2303575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009d2ade2d9f58db79129ced47ec730bdc6dd9e5c99be6cd19f5836a5e0b1716. 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/SE5BU2362928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfae0d18705de78c4590b59b45bee5fda0302d8a7856c423e6b41d27a012aa1. 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/UKZGC2307846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1014fdb93785aebd1cd1d3d96f4599ef2bc6ebe40b8948b745532d567c89a82. 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/UKZGC2307848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80a54a4dfae9192543ad4a3054bdd8175abdce961d268ce3532818bff1d3d5. 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/UKZGC2307847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9ef8526275045fa4e818a5cc2a40f95978b0f2e85863346529c49441f6ed64. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKZGC2307849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ad0f9ccf311df0e1004db0d0546aaf8b0f4a4b3f7a81e9e9c30c6ee1cf37c. 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/UKZGC2303575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c1dc5a2ecb1b2187d4438b637cfb66aec1e71b6d3c6b3646a205aadc31876c. 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/UKZGC2304991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55808ee597eb69158e22515f6bd1dbe79fb1558cdf7b35abfa69ac3e6fc6809c. 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/UKZGC2301688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f18c8d788da9681953f67b8e2c940aac904d31eae8ad2cb88992b29a5fcfc. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/UKZGC2306893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b32278c1ed103f1491f61da88b02fea46cf817bf13839b46d8c3a2eca214d47. 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/UKZGC2307850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0814269ebd1bc3ec0e680515d4fcfdfe12a469544cc84485e1fb062cf240fd. 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/TLVEM2435853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa8889f41850cc123b0ad280c4a9dd1e078d22d4f58d07df441f63227d3e9ce. 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/GX5MY2428301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7313cfb4ea825b3f876eefe80fb49817362c7b9162d590dcf412a765b8ef24e6. 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/UKZGC2500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5946434bae4f2295bf5194c63b70396546eb6cc480ca7181d6d203560ce5cc0e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UKZGC2503016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ece512984c2947a0533a39d514e658ae3953ed41766e1e98aac0815a6e0040. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USLZJ2376431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd051e1b527e728fd7a052684c4df4fde76574be0e059f16d9840aa7adafd56. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SE6SA2213396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f0240ad51b63dceb727f9c9ba961d1f5c492b394b2ee7c4daa83046b3b413. 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/UKZGC2407038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffcad4b770d81c665fa0bc0b87502fb83f21006e32d160298cdd4c5aaeccf17. 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/QZHN42105841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7201d679eeaa9d63e4ec9b5e69c34a2fb84c48c9a715c675b09b88eba250167. 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/UKZGC2401057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7132e95113b48ce579257e678099653c2e19c7d809c84603258c51c5820ba3d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SE6XX2251520.