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 0xe2b0535087fe3f78ec9dbcc1656edb2a9a01736efe8f9972d8c75f802b16a5a7. 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/3ec2cb50-9df2-4305-873c-c0c2d70a8751.json and https://artists.proofprofile.net/proofs/artist/3ec2cb50-9df2-4305-873c-c0c2d70a8751.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 0x5e0e686a5f176fd6a63d774ad78bc7c94b0eea000edb7341a659077948d96338. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:23:32Z), 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/QZFYY2065468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa499a9dd4633183d2b2ed3db57565d3099135aa67450b8691e231f9318b9b85c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFYX2063503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8337a7bc645067ab5dfbbf78c4bc48f327701a25bf666eaa421d86788b4d69e0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYZ2065580.
No Time to Die (James Bond Theme) [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d17272fecf2dcedf5e907056aae62cb39b63f2fdcbd943989aa89c37872263. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:36Z), 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/QZFZ22069595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf1d4ff6f831fa3d4a67c98898b92cf275b84cb583657a0a8150936d04d5ac4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA62067318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5eb75c7ab915a828ca8b9bea6e4f1a1e52786697177b6c6d7ae8ac90d8e4a5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:38Z), 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/QZDA72002809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e22fd4a3dbb1541ed15cd4de3d0da2ec9999acd8708b7d1e5821a35a09e4481. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZDA42033692.
Can't Take My Eyes Off You (piano version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fff07fdf25f825ab47b34bca0d422131436c004f55a09ac83ef0dc1730850a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES92031226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f293472d40bf833b1a3838d48898f9388242dd28cc201e74a8414404f6182. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES82050093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd56d6235aaf7bf1a5b37e878df92943002a42c4d15bd26918c23cd512356c5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AUBKF2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38e13cefea141fb2d49fe11b43b9026b7dec85282e399b00bd97122bc90eec1. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZHN72028184.
Giorno's Theme "Il vento d'oro" (JoJo's Bizarre Adventure) [Piano Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035c28000fdd1cbbaf87a5faa721f05ada7852b4d7fe93c6cc2c0ff05e8c9315. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZWFS2428086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dac574daaa2e6b654debad3b613d3aa9ad0d84083bd1b18b958f80d51bccac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWZ2588665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2115aa7e0d5563d91be0006971b729d8402a7e6d3c620bb9397da199f1a99ad2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:38Z), 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/QZZ7Q2539113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a3dce3086104f1230ff16089186c63574b1e0e63df386bf275f32e5d58399. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:42Z), 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/QZZ7Q2531599.