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 0xd81cd4f3a564612dcae12ec7b3e0148a943a4d0acf084733dae5a02198ed1981. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/309c611c-b5e8-458d-9d95-4279cbfef361.json and https://artists.proofprofile.net/proofs/artist/309c611c-b5e8-458d-9d95-4279cbfef361.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 0xa8c7f12c30868bde5fb124159100e678da5b6f79ca4dcf8cc56f20786b426103. 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/TWE350606902.
觀音十法 - 堪布貝瑪千貝仁波切唱誦
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72398c9af9b9e95411f91725ec40e06c0595cacdeea3059d8dd8ede8add080c. 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/TWE350606903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56128a945f6dc43fc9ddea25589a0e9dc196fce0618874a47a3b3336182e8b6. 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/TWE350606904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa7e197fecc5e112c1e25cad37adc4ba3fff91b64cc11a6fb3653e391c5ab76. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWE350606905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850da1fa29bced09e5a5a292c17c6afbdb13c79f840b727f12d5b420529ff080. 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/TWE350303902.
貝諾法王及所有上師長久住世祈請文
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f571ac52ddab12f58112ed3978cfbb942c54378664c89606741d9bada8a926. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWE350303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b2d2e04c9863dafb735c26cb0429122fb33d95c2ce075e16e76b0d054c397e. 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/TWE350303906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894773baff1d59251d761f597ae8da00f5a849ee8372495c1ea33cc3eaff0992. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWE350303907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda622779499900d22a348f5831e9b6067c5cf0b8e7b9c506206a9c3e2567017. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWE350303905.
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 0xcb423dda08c880476b2229e1656509bd4179034d513d6171799d70eee5ce127a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:33:06Z), 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/TWE350102601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88687919e69a7e87cf7d85b96700a1ba1f00891e7bc534f1960d89cc1fed4a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWE350102602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de085afbc4087d25b96f35fc4e66edf0428d698850380e032f3dfe86db4ce0. 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/TWE350102603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39f7878b6aac40cc355bdf2a656ca4c10acb17f1ad0354dc1b1343c64b4da2e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:09Z), 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/TWE350102606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70b3a831465da3879e807a469bc76fdabaeb602c7f4efe6c3ac818b96d46cc1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TWE350102604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d188dfe012611e13e4296ead79b14fa24ae1bd9a4d637dab18a585f5a7358e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TWE350102605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7bfe84ad3495e258766e61dbd69304d1344a89b2f183a1138eed7cf7884777. 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/TWE350002401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1030ce7b28b3945168eb02451c5391cdeeba865807bc83d62a223ada2d6091b. 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/TWE350002402.