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 0x77289a2f9bfc8f63a67cbaf207c709de56674934140c6a11c670897c2f0fc734. 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/80fd3ad9-2af1-4992-a964-eb118bc8e1b9.json and https://artists.proofprofile.net/proofs/artist/80fd3ad9-2af1-4992-a964-eb118bc8e1b9.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 0xf67f23f1a8e618d55f3af6c2e0c4db4302df9e94fb66bf3ff572c46a419e409c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS181400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a0041d42e17efc1f7ed0aff79b25ce3a49a27f3766ca83ea83a6a437464723. 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/INS181400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2b843b23bd0e959c714befa7ea62dabb42f4e6239c72324de7a809ac8b6ba7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS181400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a622a814713d7c7a705971c7203ce25b4c6fcf2c32492b8035cd5259986ce92. 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/INS181400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48ace01630d8aab4b3b462d95f3dcabc9f233dc1f35199a531e85d40d979e2a. 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/INS181400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71fec8687303838acf73c5cfd2ed9f387106a9e13aee2dd71782905900ebdef. 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/INS181400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b67cde7aba3af974b26c8582f9524ab0a794e4cfc03c64aab0c2534fc90610b. 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/INS181400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cbce54ac4bf10fafa8ba24d3fbdee7afdf3e3307eb4f0bfa3a1c474073a47b. 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/INS181400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f67cad603e2759478d60e6c9c2955d1138e796691a61f3fdd1c3334a4f3e2ec. 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/INS181400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928008f9e66f34929bf2acbeee7ac195497dd44f0718e1ea70abbc43108dab3e. 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/INS181400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b8c7372ba06d2e196eaf5a01df7cfaa3be995a89fc10df413ecead786eb60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INS181400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d5a9cf2dc9f0d9e62aca5e4ac934b617b071be0a54853e26362fbd192ef2f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS181302907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508cc88ca5cf9e100d28ed064e477b26544f725a7a1f911314a67ebeb8a6139b. 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/INS181302908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2cfc6c66f729e5780a91407483d0c3ddcbcdd06fe78112e404e629a1ac74d8. 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/INS181302909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6727a23bb613d1d2729583fa029b56c34062a01251fc2fa826ea8dd15df7156a. 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/INS181302910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66091d0ab137d6ab48b1006e8cf56f26f1cec697686aff9a892644e1cb48cda. 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/INS181302911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a292158214b4eb0616911e2aa636c7dcae240a486cba25697c66a2013f234b. 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/INS181302912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b63548be0181c095677bb9fc95467effa551190b15c9784672b54271bab1a5d. 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/INS181100874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe598e95e6f46ac3728621ff2dd275973aaaf963b9b4544e4a90ee3679004b5b8. 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/INS181100875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf275db22442948f63f8e621fce5f3e19d2e41d833fa5a12bbd96fcbd92bdfed3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INS181100876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854c7f1dde122e323e0248a4167a7c515656ee92e6caa8d9f5d9757ba375b325. 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/INS181100877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251fad6dff622ebefb93e1780bbe417e2b8fe9c9411db3730c05c25dc8ddadd. 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/INS181100878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda630bcea48ef1d748b77f6e5bad8028a9177c7d805953e6c35466610164d559. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS181100879.
Mahan Kirtan Darbar September 2022 (KF38)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6611dde4ba8860b467b024e89081c2e4a06cec64b556fc45a505818190838944. 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/GBMJG2321646.