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 0x3e5775c00a5be650461464e863880f49934c44ddf73f7b0e21d09a3dd02ee6f2. 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/56997699-8b4a-4ca1-9a0b-505c29d3e190.json and https://artists.proofprofile.net/proofs/artist/56997699-8b4a-4ca1-9a0b-505c29d3e190.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 0xca10027c3b1f159475b5cfb2b7fa7c372a701fa06039e9ff8c0760d85749eef8. 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/FR9W12309686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10027c3b1f159475b5cfb2b7fa7c372a701fa06039e9ff8c0760d85749eef8. 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/FR9W12309686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df36a5fd136b9575542b07db368308aeb73c654817468b4bd85817acdf1c6e0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR9W12309304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58be2e15027ab5bec888462498e1f6b1b794468dd3628b684250a2400a4d59c. 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/FR9W12309305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b9d4f48acbcaff8ca914d9ab740e180e1aabc3843449e26655b5fb98b6e58. 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/FR9W12309306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b882e5e6d6109f87346766c66220b93b739a6b209a3945fc87f2913da0244d. 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/FR9W12309307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58be2e15027ab5bec888462498e1f6b1b794468dd3628b684250a2400a4d59c. 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/FR9W12309305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09582bdff951254a3ab845c323ae34adbf621f4697df5c0a46274322b8b01b4d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR9W12356007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266f77da971c94e71cfb3f3780cde7ba246000055f6ff4b904330c02d7e43770. 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/FR9W12364902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5d52fe83f05fadfe0a32d98cab20279037dddddf397892d97e30d7a3d5411. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR9W12419243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5d52fe83f05fadfe0a32d98cab20279037dddddf397892d97e30d7a3d5411. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W12419243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948c907cc99e82c26400913f126b4b35c5c8d625d5f19773511cb45b302dc7aa. 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/FR9W12465636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948c907cc99e82c26400913f126b4b35c5c8d625d5f19773511cb45b302dc7aa. 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/FR9W12465636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587b3f7c97424b48e1b791479dd176daf9989f2b40a12be82abf18308b1fb720. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W12519474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948c907cc99e82c26400913f126b4b35c5c8d625d5f19773511cb45b302dc7aa. 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/FR9W12465636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedc2ce733052cbc8edd66aa42d4ef8edf3dc9e036d76d75637516d732c16e38. 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/QZHN72334925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387d335cbef308185913ebea482c91f15dcd324c0eeca36789e68cf51dbc4656. 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/FRR642301244.