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 0x175464c4c14761ec3eac62fc1f86b7618025ac091a4a9a8e48b103591008581d. 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/cbfc07d3-0df0-4cda-b5f5-1b9ee89edb1c.json and https://artists.proofprofile.net/proofs/artist/cbfc07d3-0df0-4cda-b5f5-1b9ee89edb1c.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 0x975b6f4130b91f8bb5a5415d09464b5e67bcfe63a29d10523700a720c86dae6e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM2PV1679308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352b3eff205eff095342117d9ed7b8ae1b77200e19cf37f1998198a4c737906. 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/QM2PV1679227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1965d24aa6b9c57c7dc6b5c8b3cd94aa1c83434db163cd487c470a2936f99b2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FRW242146344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe713aa4d2bd0ab9b30681f60cbd2d55b3fa420dc6c7ac5e0e569cd54681af8aa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ4JJ1661437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a96fad30fa1b0b47529fe390f48d7c79c6304e3fdfb8f1469f96aa51b40afc. 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/QZ4JJ1733177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fe9c9b74b2b2af344f8ef7393a6917946f6c44a03aaee077dfc6e40e67c3f0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4DW1788844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78306c25442e4d80d79911bbc24129b7c1f0e3b6229f908c3a70fda6f89010ea. 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/QM4DW1788851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559ee9c51ceca5ebeb9676767cc6a7e13d832f177640f88ef21a3dcf7493cfe2. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QZDA71813134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b68195544c3f852c276cdd30bcdb61fc10b21878d5fd6af2d96e20ad4d584. 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/QMPKX1866505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01839c61a5b60caed695cf961d50b3073ba21ca03909a798ff95b8c271bf24f4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR10S2184932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b4adb5f48cb52106e6e3c902a84d26109201b3bca773503d0bd1f43bf28f06. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FR2X42188710.
Move On (Remix) - Originally by Cash Koo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d4aaaccff7bc172a0b42f9f96c7870285950cc755a122e53b191ea028e13b. 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/FR59R2191334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab15f88899835736a317ca8fdbbbfdbcbaf8b1549501477266160f6b6d7e786f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FRX762161674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b920e7ff5021f4c648b5a5435e0d83c38a3386551286ba544bfd869c1055d. 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/FRX762161681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff9d1d1313f87ce9b8251c0489835dc53b3e65502b3505a32cd75964509061. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FRX762161683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc5a429bb1d58b869bc5ea28f48685ab6b81a4b0fac59fbdf20bc97e5049aac. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR2X42307418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4635789cb7cc3ac784e41c049b329fd967e8b9abbf23489cd95d0eb0207f10a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX282431218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8d21631e0fe876c6fad9445f8c17244d722db00cd0ca0b19a7f50add5fe10. 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/DGA0L2313084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7a69ad981ee211e98af5da45a33305a27402544dcb0bd011426e214a712b64. 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/FRX872444225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c78db52aeb79858dcbc4fe08dbd66a96bbc6e3da6757c5557788718ea677d0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452403654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde667e874619b512efc856ac1c05fc96fd3ad7cd1351e58ef45c9995c28e73e. 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/DGA0M2499735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38313253661c6930e5b5f822cce375b12da27c9bbcfced5825899e2f4c2883f. 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/FRX872444224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8732ad266c9131ff8b9e356a129cb5a75a92a8dc89cf271995a1fc99d859197. 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/FRX452541689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03af4158642566e305569e1348d1196080893cc87a72b1699ee84fdc4e09b73. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FRX452541640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aac42db0339e8f9283a66fb2362d512bd1b4f278d223b0acac95f7a3b41ea77. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRX452551671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b693a50a829bb92cbda15f92a775246ce1dbb7bcf949e02da263e4b63dce82b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/FRX452551672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f722f316a17685480942da6af53cfe51da474f76326b4151da92f796de504. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/FRX452551673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13dd50eef3a7fcfead2832df6472dbacbcae5ec893b5fff321d93119af6b3e3. 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/TCAHF2347310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf179cb6cb921c6a7c6f7d19bd908b4f13087eb81e92f24c05478b7de87a85d9d. 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/QMDA72375111.