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 0x810a2ccc891b45d0d492de16c796fd2e4882b8f8526f10a4a0fbd8aa97d2ccd2. 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/c285e103-0c53-4ac4-be14-60975b2157df.json and https://artists.proofprofile.net/proofs/artist/c285e103-0c53-4ac4-be14-60975b2157df.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 0xca10215234f8ff0acc2c294b4e829662d4af68180ce2a9d5b6a86918b32acf99. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:46Z), 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/SEXGF2193501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2043435a582d0969f87319c050e7946775501e3a631b2920848b62c2052f11af. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEVOZ2200701.
Barbie Girl - Symphony Orchestra Version
Hits Go Classical, Vol. 2 (Symphony Orchestra Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33fe4899acef5e8b497ccd1e23984c32485c4dae023f0c22dece070a885b94. 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/SE68K2300149.
The Christmas Song - Piano & Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf445010998ab9487ed1928166ff72d98cae1d1b15163a62c7a308e88d60c85ef. 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/SE68K2300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aefa42282852b363f304f018b34bc50ab74369bb8f34c600cb3a237fb7a4a5e. 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/SE68K2300356.
Have Yourself A Merry Little Christmas - Piano & Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd608f187b6aa4bd41ea9e4aeea762afc733f8b871b08290d73d512b8b02936. 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/SE68K2300352.
Winter Wonderland - Piano & Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534fad385711aef97c4d6db62a70f13772c139a9832107d57d593e3a634cf37b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE68K2300361.
Right Here Waiting - Symphony Orchestra Version
Classical 80's Songs (Symphony Orchestra Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8feee2b86cb6edbed0faa5f383f760ac1aee1fbe0d2c84cc1f9d4063e35852. 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/SE68K2300333.
I Want It That Way - Symphony Orchestra Version
Summertime Sadness (Symphony Orchestra Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697436dc9279a060850514231f15296fe1914705da392d9b3b61c2af86b65fd5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE68K2300135.
Hits Go Classical, Vol. 3 (Symphony Orchestra Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697436dc9279a060850514231f15296fe1914705da392d9b3b61c2af86b65fd5. 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/SE68K2300135.
Don't Start Now: Don't Start Now - Symphony Orchestra Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27aceb261839ed46255083f44c57c30a1228126cd5e417a60d4a7378dafc918. 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/SE68K2300128.
Right Here Waiting (Symphony Orchestra Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8feee2b86cb6edbed0faa5f383f760ac1aee1fbe0d2c84cc1f9d4063e35852. 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/SE68K2300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3321396e413f74a8e310373870392bc87301d5382bfa0815c6ca21109d9700. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:12:19Z), 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/SE68K2300221.
Let It Snow! Let It Snow! Let It Snow! - Piano & Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f95213952d86b68b009e8c93bfb8e9bbe935ed7f49eaca85adce1d7046463. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:12Z), 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/SE68K2300355.
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
Rockin' Around The Christmas Tree - Symphony Orchestra Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f065c3e09bf84d94a492f5f35c6199bc2424a3295ddb78f257a9f4cc2d21bc. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/SE68K2300185.
Driving Home For Christmas - Symphony Orchestra Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4b85d3acab331c6957e3d28117358fbe7e7a274b71431f850645777ac1abf. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SE68K2300351.
White Christmas - Piano & Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b9fc79ee3c5397f85a57c92dcdf87628d4b34a987920e411c8b27ecd388edc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE68K2300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7352a2b43f668c1a1fa3dffeafb1b4ac87289f045a431b4849bc4759e92af9c3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/SE68K2300354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb1cfad52e40219bc12733b4e23b55741b8e0d4990e95387465435fa90d427. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SE68K2300211.