1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0253b34dd1e57cdef0f4a33a6313c4a1995793e95ae019967e3a444e24ae43c9. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3ecc614-bb46-46d3-9725-f9cdf7cfadf5.json and https://artists.proofprofile.net/proofs/artist/a3ecc614-bb46-46d3-9725-f9cdf7cfadf5.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 → block OTSBitcoinBlock must exist at that height 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 0x357f6e9124968ddcfe7701282ff06d9c1065aac58163151287f5ba35d6deae03. 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/VNA0M1910378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0b74c8054ba2a72aaea650b9a64d5be20b1c5b11a60b59e3823f511c08528b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/VNA0M1910379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4576fe69063a79599c82999fdc6b2d58a97bdb5d2ac2a9c54e9a05a5fd149d9. 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/QM6N22467728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47747cc4f6cffa5dd671f8849dc009300e8f3a92c761a4e89cceb02553dd49fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N22467732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8191e42619f13d234aa399ffc7629dfb74224d4193cb0d51da4d84ca92f212a. 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/VNR011129468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81fbbf854e552d74c5dee0cfb3439ade3ac39b7d06168dd210987af06b3f293. 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/VNR011129172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75191dcdc4393c5dcefc1c93b3834e6e19c276217f9c3275e4bce25e4fcc29a9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/VNR011128755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275e175492d3054e812fd23aa3526fd0432b8cc4872cf9cdf43aa8ed92310caa. 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/VNR011052282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e2789b200fd599edc625225dfc8de80289145a4b04450fb46272e3cbfa7bd. 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/VNR011052630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3840dfd6298991b3f651f6ee4842803bf114864478af554b9190cba271d9a1. 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/VNA0F2111504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e24325c999773d104ccd41619a0a42b50b5ace8ec74a00b39aaf555781fd501. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/VNA0F2111505.
Liên khúc Trai Tài Gái Sắc / Ngày Xuân Vui Cưới
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30169e8aebd5e53e789320ba46957666aa4e5f530d100cae2de73a929cd9a950. 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/FR10S2267773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02196f2553361ddd7be5606347f488d69b346ff68905d08ebbd8eb4d5a2907b. 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/FR10S2267775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe246ec7f678006d3ad46ccab747397bdd1d2089a2d22aefa4f9724141f566430. 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/FR10S2267776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa991741086b1319bf585ecf257986823caaf07d9998afc751a2ff6ccf17660. 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/FR10S2267777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc243ec457826038e6914110061aed7a11e6836d182982c81f4b9ea267810236. 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/VNA0M1909557.