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 0x02b1c7c3f0aef5f1f5dcef1c5afbc7294e4c967c3c1ff24bb6d1cab2cf5fadaf. 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/61038ded-3e5f-4c05-99b8-395ee108aa9c.json and https://artists.proofprofile.net/proofs/artist/61038ded-3e5f-4c05-99b8-395ee108aa9c.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 0xb6fb8af8eb62648505c107b8dd7aeb9dc4fd3ecee1ec9c36ba87c095486e9736. 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/TCJPC2431409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b4cf9f2d7e0f0b97323cf76315739be742bcb37d27576617dc7a1a5a4a503. 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/TCJPB2428015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d8e6756ea24eee0186824c9e60619f56058f3f5e4e3a89cd4c49aa8ae61563. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCJPB2437930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e22460714b46c4f1b51ea4a47897c892fe5fe53ecec9b279ba8fd2af2904f2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCJPB2403324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb705465d16a3d34da17ec6c52c077eee787537d79ff7df1928c240c560dda5b8. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCJPB2437955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618f53d8a70eb62eab40d0e70c5d96d777f454a7a51ba9e4955a40c992e6e85d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCJPC2403917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8184b40afd20c463e4a524ad1621cfb88f55e52716b0ed2aa43b48b2c3e9f8a9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCJPC2446310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f10ce71ac53cbe798881027d7b9d1894b4ca808891c8afe84824684517f8a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPD2404237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293ab844d2e81acc1a1c4f480d78bf5c374cb8f6f6f7e7ccdb821ac218d0ee6b. 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/TCJPE2557942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c8957617ff5ca8235221b884881801949dc32f34fe5a64b29fc96f41aa5be. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCJPE2557960.
Be bright the color of the rainbow - NELKE ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bfed30c4d35cadaebfbf5c1a8a532a116845625c6169d7053966349330a7a7. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCJPE2557968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06ac043fa6fb45f7af33003cbcf899495c7fcbb0bf6817d099c5108e5b2065. 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/TCJPE2557976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c194b5bfc1fa403b6538d94885a899f83e0174bbf6fca7147a6c3598f5b1a. 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/TCJPE2557982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf2d1f4afac96c364be54d464220fcfc6d0505b77d79e5cc0c435344ea5b225. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCJPE2557984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60877d313eecbc269d5e1cf518ea23e32f5b1276d1f0ac28564e44bc94a4cac4. 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/TCJPE2557991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6124d5996e5b1f0f6a11c9dbb1e641d6edf16fbe2617af6cc0b6708bd1219da. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPE2557995.