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 0xb49e3d070add503244ca92f0179c488b9d98ac21d106e4139fed916e3399702c. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bba32a8c-1764-4a9e-9afa-1da406662d95.json and https://artists.proofprofile.net/proofs/artist/bba32a8c-1764-4a9e-9afa-1da406662d95.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 0x1fea879ef45d4447f9308f857df077994de941f8217649f777487695ada9e072. 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/GBLFP2429784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca13102d85c65f2d7c6515dc8b9572d5d79574350138ffd1588ca1df9b9c0701. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLFP2392556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d641ac6cb898a601ad21618bd67f47a00f75c9658e516211b8f22c957eadce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWW2207182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a49c498fec4f1ad427bb92448b4b62b42d3668fe8a96e9cc0a0ec91d72607. 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/QZNWR2265561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2398f47be405a357178bd9cad9197810ba8af50340863b633c63c84e173d2bd0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA82243259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca77cdf033d509d916edeacbe8be2fc280a0e035594584242db9782e4d021c6. 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/QZNWU2101908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4558b03318a9aa121a3eed197c90c89eb419ea60586fb02b0327a2aef709828. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN82109172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeba9ac8a1c4f38dd1c8489847842c502ecc7bef7fe4f1b4161d5aa734444d1. 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/QZDA42176127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3125145c8c3cf8a636b5076765d6c79aaddefc1b01689f4f9c3d21be2ed57823. 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/QZFZ52144997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b849a244dcf5473c8c77c625b3c52b62d9e0832c9553af9bdde95def8382e5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6K2008599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98912fac0d53409a65c4a9b7fe7012168a245b6c551dcb8caee58fa276f0dd60. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHN52018240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0f55167e92e630f947e22b76bd3070fa024742a1206dc20150ceb45fdbd3e. 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/QZHN42036636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15fbd3af2a3ba0dbd8df91dcbdb3cf1d34d2053bf3a2413d8e8bfbf1663ce6d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92042847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818894be48de03dae02e27ffffe20d5ce11d25234deea1fe506fd1e78fdf013d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA82044247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a9ebc56082d6583c68646ca284f4c2d94fe55b0a8d4d482d7a53641a1348e3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA82029031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2d52218a246943c5ff1f881ac7eb55950171e4af5b7fec3aa894fb0c2178ef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA82027842.