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 0x80024fe51f294742aec87e0c2ebf88ff3fd63e7445d1bbb31e68a53ade64d9b2. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38a871f0-8c05-4eba-98b3-111b950bc47a.json and https://artists.proofprofile.net/proofs/artist/38a871f0-8c05-4eba-98b3-111b950bc47a.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 0x34ba5899fc1c8100d202d222d7f590798c6f3d9e144b110abbb2ba5dd402c0d6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMHK2331626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c5b1420a83dbce21f4dc707f2d2721784274a9f6648943970444f64087a01a. 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/QZMHM2314071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b0374343e61b7377cc729b17226db8578ff2949a95b956de851f6ba89baee2. 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/QZMHL2373841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21466fd12552b9b72153605815fb4a206c5c9d72738f5275550da1253edb4f96. 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/QZS632242573.
Our Looks Only Last So Long - FLUCC Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0918eb288aef8a86e403ef06aafef07b08f6324d032bac34841bf16348789c69. 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/QZS672204677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed31b8ef0ab78dd7f18237aebbd6f3496fddf667a2f6da1f3c3a759f65bd0ed. 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/QZS642293915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4565724a762454d750adecc672fbba765a3f7e31634e64fb36c0164076328543. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZS672275396.
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 0xd8ab8959b26ee11bc836c0761ae22b77ca27b1aff92f4328370b8b064d5bd55c. 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/QZS672442063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c4dbfd78d3a76e94f6b6aea8bad27d5429b8665c073fa96039c1a8f83ac69. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/QZMHM2417995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a74ff465abf425333a4079c57d1d21ceb48aaa824de330d35f225c84e67227. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZS642438575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99796069e050b0e4849f1903991fb4e62d0591081c45a6f154c2628351eef051. 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/QZFP52337092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12312407374d182fbed1562b3be7d05334c3efec1d4f9866b32282531ea40530. 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/QZFP52337093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9edfa9fde9631c355c8d62f77a2de795851200037293c1581c7387d96b5cae. 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/QM42K2312923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232a5c4363ec3679bb6ac5e34c42da7d73b8bccad6153392485d167d75c3e3c6. 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/GBKQU2317763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf241759f8ff0f5c678b0c2c9faf165688dda5592c6537cc925cc948751366. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBKQU2317762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd342ac97c761af2d8c362c7cbb42a4acccf4937d5935e95f61d8ffbbf879b53. 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/QM42K2252406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1bf8b8c92ac8ac136c9a9dab0a35ef790f112b6fb1471f87e3c6d15b860846. 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/QZH5E1937655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1ab03ddff5b1f6f0d49c274aa28a2708589772bc537508cff4f44a18456663. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZH5E1937656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660da38e289770779168b64150e6f8c1e3299c51fa4308aad0b8717485dc57df. 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/GX5MY2157206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471842f67e8923563a0f05698e119a3503409ef9f3c122c5f2c2fee6433b383. 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/FRS182129822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca130932be86f2715558e59852ee7605c226992f45b1d95428932889407d3fdc. 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/QZS632376447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b3e13b5680fe052f25f61ec7d224e07bf9b601d29690343581a6fc499e3c1b. 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/QZS672462496.