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 0xd6145cc65a8a2be75c3dee9c293f7981a376a8cca1fa6e2fe7fad9016a099470. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a74302-1e4a-40bf-9532-11a92cbbe6cf.json and https://artists.proofprofile.net/proofs/artist/27a74302-1e4a-40bf-9532-11a92cbbe6cf.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 0xe23c99851d4792e59607981065461e19e89c4ebbf810203edfb4fd5e64a4af8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TR0361100916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f9e28bfab0027df03cda4f10cecd02226c973155a70068bac8988987b7a24. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0361100922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff444b52443a32b458b7f94e3784afc27aa7565de0b4bd6fb298e52b497c31f6. 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/TR0361100921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecaaf9fc07bc501e7ce76868d931fead5e79b10a1ed3ac25b7a0c7065408870. 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/TR0361100920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58800189652bb9c8148ca43edefec1d8f2a27e73c3810b571470fad54b252255. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:33:50Z), 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/TR0361100925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429781cd31ffb64bb69b44c26f70e1712160fbb7b5236719b35f772926e12a16. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:36Z), 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/TR0361100945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a98a1c200ed67d0e7815bbdabd8075c0a0f2376ab1d4e601cab54bb78f54f8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:06Z), 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/FR2X41852665.
Sakın Dağlar Gibi Yüceyim Deme - Uzun Hava
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9717d91893b4e5ff777d20d4dc18bfbf98fbbca1a51d5eb13225237bd2a5d9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR2X41852666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62425fbe214312de925c9a35da6b9393cbbdee22423f18cca0e063dff789ab93. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41852668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc65b2e19f28bb1d848f9e147876d3260603450a27a772356d2b1dff3c11a86. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TRBCM1800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3832eba348936dc4fc5bfc7016d143980ad8069ee88a77405308dc838edaeb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:50:45Z), 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/TRBCM1800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95297546d3c8c69ed57538fd740b82715b9452da23f85f1d713830462c4f2547. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TRBCB1900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884a6d504bd15fa2990d95d741be39d1e768eb731b301474304872d648fa10c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TRBCB2310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f86e773fbfa66257f53988ee29eef7a96a3efdadc4a05d7efedd655fabf4d28. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:56Z), 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/TRBCB2310004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79772dfc6a89a639f1a852b8473bef1be4fe8b84f2d683e2d72e8fd9f43c505. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TRBCB2400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e15ceb4479de5ce76b5621a4469a574642fbe2b75f0b9327f64b359e0448481. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TRBIV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b48a54c95e477213f75e083eb5f3f3d6d4aa5b6046ce2303c002d235ee19532. 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/TR3501300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42073b30b58c06c03a779071c691e08962461dd2f64b235d2104e2c240b09e79. 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/TR3501300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bd37e98aa950f2c8379f4438c99e90811831b610e76ee29edf834c29ffd90a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TR0361900015.
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