Takab () is a city in the Central District of Takab County, West Azerbaijan province, Iran, serving as capital of both the county and the district. The famous historical complex Takht-e Soleymān is
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 0xf1c980dcfed8146570d0e4f031c53ffd3f90463d8b738ee3e88b5782b3201061. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dec7090-ed2e-4ee2-aeab-434ea99c6780.json and https://artists.proofprofile.net/proofs/artist/8dec7090-ed2e-4ee2-aeab-434ea99c6780.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 0xcb6e84264cb9c65b1de545137d0f94d5b9043221d9e25648301d9e05383aaf38. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ62186698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cba58b544b3dd17adbaaaf63e645556e9a10f1d6abe6aa6d592b7e4f29ad0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNJX2141443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0c07edbaea042c2913872c477f8aa779667dbae591e9c272f2147a7b137d0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:29:09Z), 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/QZNJY2110553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37657df821602be592e8226fc6532af84b528d5952c848c76e7a5a0dbd48f0bd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US7VG2220143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e01f32b9957e61b7d5ed6f993b93c0f34693328abc265474997aeba01c2ca6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5AB2211501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a18fabd9a269fb203c097bf053bead0294b1b11eca8a9a1fd9db4c76cc7156. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:16:40Z), 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/QZGLM2298951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94b942a7778da35e83ebccb5ecb63e9e4c420679e19ae182df0bf7fa312c9a2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHZ32234561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872eddd4d1812c29052ec88308a420a636eace78f412c4ef4743dd82e490fe8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMZ92276564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ecc2d415a98307c61b442e403cb1e0e14c04fb50419db6fbe383ed2578b48. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:47:58Z), 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/QZNJW2292712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa800e3e772aafccd81fab9bb864a31dbe17bc631d29a5256b09dd38f26016a57. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBWUL2226147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7daeecc7d2b0a683ec86f03261618d9887840ceca8c2645000bfed20299b614. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTRX2276603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c9bceb37aa24d8259cdfdf5a6bee742c5cd65571f6b8dba7c0afdb7743419. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ8B2498195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8d008847cceb661dca910509d8b95ba58dcfe51ef4f2143c84570ee0260d36. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ8B2498203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1cf95c300f38b000056e2d56f06fcecda7490a7052b5cd8295d4b8795bd0d. 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/QZWDE2212501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf922e9acaa8a95b7cbce9e3a5e649672162e7013fa6edb1460f1c8b65cc25d85. 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/QZWFK2310976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53f1fea8839a3b2a179fedaea2261668997f8b43ad0fed91cd7ab0233dd5208. 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/QZZ8A2413990.
♫Rap dos Supernovas | A PIOR GERAÇÃO | (One Piece)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452efea5bf61d5763eaa4bf400a13cffe4806bb2b568e23b4d6b1483030414f7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZPLS2168012.
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