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 0xc6b36e93bfb5f3ca2e030710bbe7132ac71195695e1162b99dd3a2699c2dff56. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/186c8f95-a0a1-4c8c-bd6d-43f84d2ba52e.json and https://artists.proofprofile.net/proofs/artist/186c8f95-a0a1-4c8c-bd6d-43f84d2ba52e.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 0x58977161420c6889df6b81196230bc1c6c6ebcd9e790285b3591cea37460fcb4. 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/GBLFP2280026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78d73bf355459ba5132a0addd2d04652a0083b4e760830e3a4cbce73e89b32. 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/UKSWY2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a85860df94256e0e4f032904ebebad2a4d5990329c510fffc27cf5a672c547. 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/GBAYE2101405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59ada4cd51af984f69835f0c85107fad3f879d101c48ba57217feb2422cd1b. 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/GX3Q92308844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc80694f3fc23ffa72b7c3764805b14254edd92f7897f255a7593977d4f95cf. 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/GB2GX2000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289554239156ef73030892b0745cfe6e437e24be2544678f4d1736efac6166f. 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/GB2GX2000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c83c0aa774d7289fd92f5b58e01a03aa733e9c50d3ec6d96805b14d1ef24b0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB2GX2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfba589d122f3cc50e1952b0d8446bb55391ebc9eabcde2dbb65e41f73478b7d. 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/GBMA22108804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c88e1f450dfbc8186b8e3dda6458b6aa72ff2da9057e98c02c7f0bdfe4fccd. 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/GBLFP2418075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c88e1f450dfbc8186b8e3dda6458b6aa72ff2da9057e98c02c7f0bdfe4fccd. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBLFP2418075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59ada4cd51af984f69835f0c85107fad3f879d101c48ba57217feb2422cd1b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX3Q92308844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71494509eace06dc928817ef9be6ab99bc4b022679ca62a58e205574ac438546. 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/GX4LG2101484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e5dc4ea5c80a6eefdf4926cb48cd057b11b40a440c17093720445640a7b0b. 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/GB2GX2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043d5ae92eddbd6f807dd61d415432c1a3fe1c96737011879ec169cd5ac26d9. 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/GB2GX2000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc80694f3fc23ffa72b7c3764805b14254edd92f7897f255a7593977d4f95cf. 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/GB2GX2000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c83c0aa774d7289fd92f5b58e01a03aa733e9c50d3ec6d96805b14d1ef24b0. 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/GB2GX2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623720437f9b38397ed5feb77d6a6a7703101ffa2c925be68d046330d52c6a27. 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/GB2GX2000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fd27cb92a7a84e3c2e91668862df7eb09ac9da06072324d81eeaf863e5d536. 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/GB2GX2000119.