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 0xc038f092ece82bdfb9a21733aa42b90610d8777c3df57d5d5c92933ef5c2d090. 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/9225488b-dbf2-4eaa-8ce5-1a84d507ce09.json and https://artists.proofprofile.net/proofs/artist/9225488b-dbf2-4eaa-8ce5-1a84d507ce09.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 0x3e3cc002308f46264b7fb08d52d4a8f8420bcd9e7e66c602b711b97447fa0760. 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/QZDA72146951.
187 Down South Muzik Vol. 2 Trapped In Da Ghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb099aaebfec56254f5c001af0d831041c3c174b238a9b46a149f11778faf099d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWU2176427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa82b807f4bb3520cba2bdeced59f827583be7ec667ef2755736fb79edc850. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWU2176430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a21b510ebb746195ff9132605c11349a807c37d12943dc0ee8d0cc99b430b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA82265280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11444357b88e8d6b19a5f32d2f497999d2661eddba1df75a35aa1af1eee151b8. 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/QZDA82265281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e04595160f0d4c5f4baec1c9ba1a08aec6153a953c72b280d33e42d45b1fae6. 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/QZDA82265282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f72cfcd181fb2a4f2e657b4f52ac7d8700941a1afdcf6b6eed710b072e66e. 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/QZDA82265283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6623a950441363b50f92025bace54514c4042ebaa025fa54949aecc2763e5c7. 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/QZDA82265284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf522fd5b599317c5b1c7f25417af909305fb170f73946639cbfe34fcf53098d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA82265285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9c041b8e806be80def7843a6edec120be7815be1e386215d8bdc654150d9c. 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/QZDA82265286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee54bbd7a1ff0520b8b9b87fc9c2f9dab09804d7d5b7d8e08dec4a0f733b3954. 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/QZDA82265287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfa2541ab7918f12103cbadbbf8307c2302352d428ef03ec58a7507b6b59239. 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/QZDA82265289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deb614d517cb65e7cb32f7df55fba43e61445d4e0c3c4fd6e60cd86dfa6a8ca. 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/QZDA82265291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b1345fb6dbb84ba670c98d44d9bc5d8096a2a56269c1270d5cd99b8af4988c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA82265292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a9e71283d2cf7406e9de1a3d69c5aaf78a1a7cb443cf5493c755d042f384be. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZDA82265279.
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 0xb3acd98d22643d2bae2fb98b1492007eb6a55438afb54712560abb3479972d88. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA82265290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190495d6ecb50418ff941708558d780244144700425847d68bfac9625f340602. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZDA82265293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ad2dc34511f7621170708591e27b91b4a565b55fd18f9ca08b74448a11b0f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZDA82265294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581fcb9093998a732ffc6a3c506eb95c5217976a72df718b8807a02a8c1883d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMER2298386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702711e73110271d7670d3d9dceceddf0e884583f16667739600193795d6cafd. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:16:45Z), 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/QZHN72349521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a35f6f01cb9c470c9af75f3467cb57261009fd9a49bc3f188cd483fa8c3e21e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:07Z), 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/QZNWX2301745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1debb2c1603c580f4458aee89602dd7cb02aaedc03139c0592493cc1552f3a05. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWX2301746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c499cbad56491a034b96757a9059e0fbe354357292c6c3c27f838fbbad2d42. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNWX2301748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f4cff4f94477cdd365d94efccc423239bf2df407fc23167e3a7ee93f691345. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:37Z), 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/QZNWX2301749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f896e19c3437a980ff7d67a6b6007f7f0f7f32c63de0d54cb268a684b95ee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWX2301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d2718c4d77bcf4b7fc332786c8ef97ebe4599cef639829b97d0e1f74097f1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:00:25Z), 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/QZNWX2301751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa276df53d5204e6b1cea344a69875a463a7f119c0f09609dc6c9cbf5811986e0. 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/QZK6P2482337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115c4c415da6ed80a29550ca228955e42458c7dee1c45223a42c773aa2a37c3. 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/QZK6P2482343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea917c6466bca86a8ca6addbf82c1d8ddf2b93fe81b7d6f8c7d18c4be840dc. 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/QZK6P2482348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a11e15c58e84e92e35aef89abe3415bad4fb2700f96ca11979dbd01c3b8bd1. 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/QZK6P2482358.