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 0xc7103bcd930a40e59c391132223cb347f673a9c0805561eadcbf851f9a4d4ee4. 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/93a97efc-48c4-401c-8cb4-294a601f33e1.json and https://artists.proofprofile.net/proofs/artist/93a97efc-48c4-401c-8cb4-294a601f33e1.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 0x0464ad1ab7d5b3dc1dc8b6be13841ccf87b3664616b26acfd0de8e980bd44197. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCJPK2069718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e2dfc7e393fecfefb919ed4cdc5cf6c7e0c416d340c9cb45821c24764cf73d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCJPS2206610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ec12bc03397b97dcc30bdbb67ac4bc17a8f36a0a0034c84f7ee459a3ac8ad. 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/TCJPK1921192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dbe70a1fa124dd3cd678468eb8e38ac48a6785602177658a5291f3a70d4447. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPK1921204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a88d3c9503eb55f61857d858cf4836addfc3ffad17b07e0b14d03d5fa50b0b5. 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/TCJPB2454571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a89d83d0263f5aa68c19caa4473af74a9c00e69916dd7b0dde212c536dc2ae. 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/TCJPB2454583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f96b7c2f0e691dcd666c5d39bd6b8da16a19d0bfe960d7897c9c4766ef09b8. 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/TCJPX2311899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41d96878648c530934dbc70e0df925f4cb5acc68c12a6e2348d6164887c3f94. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/JPWP02100768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f12661607f4deba571cde7a7577aa16e26bf39fa33f60b826c339e20c487a3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCJPI1994297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5be376e9fad153354102c5b7f1a86e7be5b022db60cbebc60108b1be18f73c9. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCJPI1994303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5275504ff70edf4826ee82c88aede45ce05ededf594b9ef31ba455f5fd2996c0. 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/TCJPG1744144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa2b9b645cf64f254a2b4d74c27a0745907e24002ba1538717f16798daa34c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCJPG1744149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1554b294fdc649b3f27f16a6570903cce86ea8fed393badf82e1e8c2d330ada9. 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/TCJPH1831284.
Invisible Lights (feat. Kvi Baba & ZORN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332b516c5abd78d8313ac5e348f802ee8b5e92296c78f42f2bdf276786ff38c2. 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/TCJPI1951389.
Slow Wine (feat. KENNY from SPiCYSOL, YOUNG FREEZ & JAZEE MINOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cea4bf7f892f66022cfc66b59350b9866e8ba35c4803cd74c22c493fce7227. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/TCJPJ1969230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccf2697a478813770a7c62ade8828ef68f7a8ed57e8354aba535134bb212b55. 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/TCJPJ1947003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20920fd49156978139eeebc323048cc80775434c6e837392e85ae7a9a4014423. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCJPB2429629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0f9185f899a65db5a594aa1eae34dfd402f9fde56ff4d7c9578b54c16a76e. 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/TCJPB2429638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad51a75b7fe1be80bc0bf29d807481ea6a2e68e00bdfd48c5ab2868b91b5c09. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPB2429645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a0ddfa9172b0488ee234d2177fd0a39cd8406ded5b06d431e96bf4de17e77. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCJPB2429658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea1b110a1edb823059c561e4cb465b6efa911975944e2048c402ec2cca6385. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCJPA2448784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8443586eb4f07a6efe79ed98f747808b49b38a6389eba6d4fdc21d1be3ee93f9. 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/TCJPB2429662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d20fb7ae67d28ae30f1e1aa34ab58d5ddac3e90104aa4489ab78b865af07b86. 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/TCJPW2344833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9baf07474990f99f05d4cf46eaf94d8a973ddf907d69afa062b8d8ba08b01. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCJPB2457799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69896bb1bec5046feee331856a009fb7ca9092e0bf493617ffab8f9d607d3be0. 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/TCJPK1922519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16da1e27f04cb70c7eb5b3fcca4779b30612e97168261f4951f0d658a2cf66. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPK1922527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68686254b2438bd263d739c5c95a97ebe0a958f20b962df860d8b20d8b82448. 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/TCJPK1922530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5704c42148cac06b943637bd05c4b3a7f95a46771d4ee54b0680a72a5b70a86b. 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/TCJPI1975380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285593d9c20cad6d29540d245b5e7a61f5b4ec17005d87fa65642aa1f300b83f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCJPI1975381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdda2fbc5d26edd680f247608f4a054d4e30954913ad81e109bfb260449fb25. 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/TCJPI1975382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dba03ab67088c3121043f4b92f916a16c093ab89bf3e35d2211f6e9c9694b3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCJPN2165572.