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 0x68e700db2316336f5c3d8a8435116f7d88addb15de17d11463e3910467eb4155. 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/cdc79848-70ec-4306-9634-6dc9fd0c6780.json and https://artists.proofprofile.net/proofs/artist/cdc79848-70ec-4306-9634-6dc9fd0c6780.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 0xaa87fb707690a03a819766769d782ad6f6ca572dc87c3fbee45e618a008f4b75. 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/FR96X2237219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dc19f38550cf85ec93aa5911f1648677a9c14f65bba170ba984fcab31b8c4b. 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/FR96X2141628.
Ulajh (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a7e3fbf26d0ad9db105b855f4b478fdf082e254a4d2181dc272867d3e9490. 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/INS172409523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352b906c606083bd690a198a60aaf2e6fc704cd4da68f65bfd54aca22e28052. 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/INUM72401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe181b475a30cf6b1bbe4c87340aec91d66be699e9b671f618537e88baa658a22. 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/USDY42360185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860f137a42f553588eaab706333baa8bdccf1307b2daef5fd6f21c050701f95. 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/INS182500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692368390583efa1c55bbc989fe8bff56c1d3d1b6082d9979bc19c60f1a70d5b. 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/INS182402460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcafdddd08d14342ed77eb7bc205574d3e006ff7fa8b206ff6063d7d3864551. 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/DGA082464990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8208df0af77dcc075c3acfaffdca539fc1a54f8e0c998af6779abb5652f8253c. 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/INO432200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeddf977bb76157d18664f148bca5e3457802faea9b153ff0ded37b0271ae449. 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/FR2X42452636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3907ee09da3ead3f015b3aa0ba7799f895aa50f3fe79d76c193e69bb6ceb71. 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/INS182303434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83514adfdf7c8d3e17aa8a2e5362e283541059a596eb4bb30e9afe6e5f58a4. 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/DGA082381925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9798c2c342b74e342196e578d3a10d26f3f87b3dace5f1dfbb8b80bb41f6f69c. 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/DGA062342548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420f9c291e9472df06d2b735dbd72be9dbf1639b21e3096ebfebe12e363ae4ef. 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/FRX872342065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb14943e0809daa58ae738523adadcadc246a5cef3e3d5328397dcc929dda162. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR10S2380062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7fa96e6516d5e7f92ea909d42082f832a5be93f96953ff0751d203022deb19. 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/DGA072235135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cab2174da37b531066637a7921899e2ecf708812d8b6b2b53a7de32f3fac68. 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/FRX452214198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c54c4b6fa0f4fa32063876d63ce0fbe742c81739fd9909c9cbb88b3e1804b5. 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/FR2X42285347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ae0314efe8ca7b8ff8784bafc6174a8a69645ea3c2acdc4640887f5c4ddc5. 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/FR2X42285345.