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 0xd55eaf8193db630b37a0c3d678258385d6f342815fe4838f84bf924e348d8a05. 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/ab74f84b-2590-421c-b2b2-1bcf6c14272a.json and https://artists.proofprofile.net/proofs/artist/ab74f84b-2590-421c-b2b2-1bcf6c14272a.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 0x15ac43fc4fdaabfa57c61fde89c54b0d85353cd3c27c9472a509daa60bc05b40. 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/INS181101199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe5cabfd119b92c34c8437615612193556209ac567c74fa8c3d41f9e31c205e. 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/INS181101194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea828717d8f2bc1599b5a2b6c61fd7879d6e8f4bd800b03e8e699784e2f9bde. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/INS181101195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7e816644abc35f7008ba886212788c5a3ea0cfbcadea5468ec56897658b6de. 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/INS181101196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e54f8e06b30e178593f12d1903ebb8242381a267e956c2d186572a5197b45c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INS181101197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703a46b1b80edafe41eb73929a0698697d0a614abd62d5974a50eacc940d0ec. 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/INS181101198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6806b59c11b965c18782fa86a503d124815f1437dc9687b2c38bcc3ca3d2ed. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/INS181101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10793b6a08ee17aaf0e24e8c71e4a662635e3b24d66ac06e410546a175a11fd. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/INS181101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eeecae87b3a302f81a64d6b8e645adec38e927f897d2435cb34e8a372b77e4. 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/INE182302431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac35e618f6ddaa1eb7568cdbd4783d6d4a83bd80c48d034df25b33e4e3306c0. 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/INE182302430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a112937fd93bbf8891f141154ea0f780c3f2bf034ad3e5fe96b01b331cbd37. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INE182302432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a881333b937c58d6c89e36576dfd5cf0c039ee1fdb0f8493a68ce3f9a57d62. 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/INE182302433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028b6372f5ea1965c7fe732933249e92c5df292f1c0e9e7eb9ad91897e1b728a. 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/INE182302429.
Celebrate Kai Po Che (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba5ebca7a053a49b78465f4f2c4bf4f4bdd52b5f806df4808712729a3e00e16. 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/INU151300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bcf621a7b7a6d8ffd48e1791c70d3b7f8c871c2d03aadca415a7bcf779d07a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INU151300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4745ed4f8bd201fd845b6e9589e221a35e5e9cfab5b615b9f8f8cce9e7666d52. 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/INU151300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc0721bcf7ce70434e92a6a30af1fc7c18a621fa411ffc5e783bbd5de79276. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/INU151300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eceffa36ef57e3c2da3ec964eabb046f2a2f700be2f2ae6496540af5cae511. 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/INU151300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa758a487d8ca3d10aef8ada261d1a7a78feeeea032c2804e0b759e09539dcad. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INU151300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81354bb92f09cb102123ef9eefe191a5e3d42f25cdd032873cb4733247a9e0b6. 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/INU151300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbee8a618b3e26b21b18e0d58eca0756db6c49c0408464b6b58633060c72f6b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/INU151300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4f0e6f730dc9b0a38f1085132bd3f4b50561eabbfdef6d0aff0fc2cda3501. 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/INU151300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f63198541511b16b840d8c6fa33ad7da6198c16bf90d58f3449316cde6deb27. 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/INU151300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ebb779c69637ebea6ba080961fa8eef1abd3579d407b30e88bed200e4d5e73. 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/INS181008753.