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 0x1c7d55bdc4545b6164ce7d7f5b53d07175d700d62c2f152f5511aedcd8e070e3. 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/18349e26-dd79-4274-b4ff-d7eef9979a8c.json and https://artists.proofprofile.net/proofs/artist/18349e26-dd79-4274-b4ff-d7eef9979a8c.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 0xac101464ec545f869f149ea3d560a930befc61831c1ab4913d8e0dd6d86f7a4e. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/INT502000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7ab64e59db452d878de1609e982423600482af87c5c4277b85ea98451b386e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/INT502000587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c110f0488b6fcd068bfd5d51310dad403f0ddff949051f141f1381fdca82cd0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/INT502000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08078e83862057bd29d139520dd9b8fd110fe4b3eccf08c9c4f0198121982ed5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/INT502008208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00df1f3a490b32f7afd7d805ed699ffc81bc9bb2a67484b3f80b97df674c35e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INT502010621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb67b98de32ad09a1cec69a5b561975e9bad51fbe02236ba3f76be81cf097a94. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INT502107792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e22639bbb82ac29744527117b983c255c7a914f94a103b2bd6b4496c1069c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/INT502109004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec7300f363e2565bd526e74fffc37ac84f43763bca3cd5ff9fca42c024ed1b3. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/INT502201293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23cc1cfa41d711087e0a25a78dd7efc6b38663d31c2c3b9920b3d9801603296. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/INT502202123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed2f0150a9bd59ca5d8ee6648735468b159d9a1bf8d8f764235600398c463cc. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/INT502204102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf802fead414a08a6f8ca5dccff5c6a6d20195abc9e91b052f389ff39ab6511ec. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/INT502208276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f002693a0d129beef267c02055d80027c08eaf1e6a52da9abb89caa49623ab4. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/INT502209317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d57d43b067898fac899b48e65d6cc93cad08e1ee3b352da44648b927a971be. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INT502303484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231dd7f2dcff26484ef216241a17a2cdcc1a1dd60f48ec3e4ef76141da579884. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/INT502310624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90dce7cd03d460d79cd6c460ef8d79eae4204d7af8ff6d77c48c314124b8410. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/INT502401299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fe9a73f2b8b76f1c34835ed390e63c743f5659e8596635ce5dc51674eea3d6. 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/INT502401994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b260d1856445f4802ea03e18897c4f5f8c5f219f027e33b1590eee5d488a8f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INT502402556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8425a13d8ef1277674ba15ba6a71f47f986e6ac9b5d27965ba24975092b47a. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/INT502403220.
Yaari Yaari Har Koi Karta Koi Kisi Ka Yaar Nahi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd452b6970cf0ac3fb9dae6b077d879cb9f750b7bc0cce785740e16c145e410be. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INT502405152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa22ebba1e87f7212844699f03cb7fddd7f612818ab9a22d4c9d87f6fe835d. 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/INT502405853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2cfe96638c57ce64816904e218772761edb1539a355dab8d8210612baa09b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/INT502406165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555b500000fa40b8ebd399de12d78bde4afec7b9d1391319da32d4b98caecec3. 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/INT502503676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6404967947d394d2d6f80512e89c60c8638b8ee97fbaef5592436d23e7541e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/INT502516285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ed6223c71caccba26e689e4c9aa311bfe8676ce2d478f45518eb224c3048c5. 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/INT502552342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e432f2102b981abdedd577fac8b21f3b3cf95331014909c88e8d54df68a4cc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INT502519666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2f13d1ff3327f4b18b49c02884d05b62249424af03d6f96b56deab1a8e868. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INT502520736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa597b962aa4ba29001e4bae2c6f8cb5775f797dcda01075306ff9adf13d38f81. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INT502521347.