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 0xfdb014998ed2b8bd33871a34fe7ebe2a1db809f32844599b4a8eb3a33e033647. 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/40f40cb2-5017-441d-b9b0-54a599651fd1.json and https://artists.proofprofile.net/proofs/artist/40f40cb2-5017-441d-b9b0-54a599651fd1.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 0xae201dfb7a1626219921f2a76be2ede623ba1f34506da6ab91c67b4aacc9c77d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA012041682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe611f79af31e5034b9fe654b927ec1eb9fcabc9bd38993d7292b736b4ab468e4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ESA012041683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f04f3eb32d9e353f20cbe2f46217a0041a46691df574bdb5e5fc7da3e846e8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ESA012041684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9784f51ebac6acd248dada002a228c2dfd247ef6fe4170a23fd2281cf2d41f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:57:21Z), 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/QMDA62109427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e7ad1ba4ca1c3e9a2e919634bf1ef3691a8b615b3cc032efa9597dfa44b8f0. 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/QMDA62109428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d4139e55020a126247cf6390505f2e83ae08dd59f0cde4456032c3f745573. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TX2452598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147f0447d7d84ca8d970fa3e8aa90d3a8756d94847c3d907f587e71fbd68129. 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/QM4TX2452609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3896c28e334100cc3114a67673dbe2c7eab82f64ede4e67710d5ece173386e8. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM4TX2452612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f7b8afbe6b2f4b546b9d11be8c9ad83fcb7420e6f87413dbe7db5e574a9d07. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM4TX2452614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb080858631050c37e817b4c6920ec93b1030482a68ba70e1a2f80f23106fc318. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QM4TX2452628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd31d7d4b0e07a5c37b24b2ac1ccf97e0453c206890c5c1802d1762805779931. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM4TX2452630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c986e72a03559539eb192ae50ca642dbc50ae12cbbe3a98cb21b6a0161299. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM4TW2463859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba02efeac9ebe9ed64b37d72fd9d04e9524567dc2a6f578cf9364bfcf9d93a1. 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/QM4TX2452634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673e7ce408c0c56ba409a5ff0f3e3ae323a3896d9577622b7c328f0fdc4e57ad. 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/QM4TX2452637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e95899b15d99dd112272e18d5f04a3eff9337972ba5fdf025fe5be77930d931. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:24:04Z), 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/QM4TX2452638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885925322094f797a7c23dfcacf2af5a01dce75840790cb1e7126fc9ea2c4f5. 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/QM4TX2452643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065606131dd0db42b2adbf11db902386748ff5312a258e73d76c6f47f6a28dfb. 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/QM4TX2452645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1585219bc18b90c14ade467d177923c51ee423b236c6c373e9d18f321c547. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES97D2512704.