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 0x37e64777bfab9684d80b8fc33f6cf64c26c3b03b2dd21e51540109b2dd9a789d. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9286567-6d01-4087-8acf-b651b94d069f.json and https://artists.proofprofile.net/proofs/artist/e9286567-6d01-4087-8acf-b651b94d069f.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 0x31aedd1a744ed911fd1128179de355508ce42b7273dfca048bcccebb4a01acfc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA61357013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c646b2f958fbc94a1d987e62f67b862e10b54bb43d8895206f1d69370f58508. 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/CH6540818599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3aee20e4568707e745ea0e37fd61e1b7a8cea378b1e06331474104d55550ae. 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/CH6540818600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d417c6152ecf3b55f49bd0add2464d0f7dce471ff55ec7a030582bfa5fa2778. 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/CH6540818602.
Rain of Ruin (feat. Walls Of Jericho & Candace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965cc473bf5d276789119d1d24b32a7728240ef3d8e07ab6e211b6eae7103b4. 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/CH6540818603.
Troublemaker (feat. Eule, Schlecht & Durstig)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5158bfdc8b5f5f08d0681640c9b2be29919ee6e2bbe622132c0e421e925ff8. 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/CH6540818606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb198ca3bb44a86b7711398cb17d13f4b82fc4a51062074761e001338abaa6. 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/CH6540818607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6194a5d5f85a0e43dba8ba821c9bbd4d8531ab157a2074b01d83834904f6c5bb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA561079968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154067c2e59a4ff9dc910847a1a6f574231bf3ee66612b04902c6499fe5035ef. 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/USA561079972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c1903f53823090ca445f4402f6ed93444b2ab5d47345d0769817efa4a7cc55. 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/USA561079973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de14ed0d203dc0433c3c9b2d4c39e985c6e0dc3dff4cc3c4cdb852e776e9b31. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA561079969.
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 0xb5993c9e515a09a721d8def6f37e80c898adc8878de2a9a0dd1f382cf2b47fac. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USA561079970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64ebd13c0330b93c14a6ec2e3392b22cc5cd087bc5851f3b76706a5dd03e468. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA561079974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64f839e59929ec3a5855214c6292cb54082bfc3d112b1af51b2accccefef012. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USA561079975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd69319ed08fdc77d903318206c5dcacb5627d26c67da9fd6a937ab34588ed6. 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/USA561079977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd660765bc5a6c35064f6ca0b14c3cce260049341258797957b45932c19c1b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:32:42Z), 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/DEZ650802718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fde42e5417ab88e31e4032a20533926dfe36a5b91c6cf31024b403b9c5289f. 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/DEZ650802720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3c3f3dfd3d4d1b0d88ec8307a95b8096d0b3e8b60d9bd0d8ffa5d082fe7711. 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/DEZ650802721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9a5517de75281cd455afe71bb567fb5f84ca0e93fc8c6c91e50074e4e1adb4. 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/DEZ650802722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c89733897ac079170f3c982439355a015953326253e8da3bc396f1d89ca9c4. 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/DEZ650802723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e4b6d05e13d902d6f5ae68a616472c7594f1cf85ecc8f4a93892067604e914. 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/DEZ650802725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf32adf8570a4532cb913e4da017b90b58689ca5822d3559d30b3bc18ef89583. 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/DEZ650802726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8641355676cc3eddd1eaad69f1c9c25bb82f91575a457ccecd2f8809884a6689. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DEZ650802719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627535afc07774c74c303de13cc69814f6198f20fd2a2145f0c35ebc948cbb2e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEZ650802724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a77603e2557c4c30259232d3b7762d10c17b85264f717c511a692f7015a5aa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEZ650802727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560da2263dee7c40f36e1de5c6a43bac3ffd5c2158eca3f57124a39b361230f2. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/DEZ650802728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aa807d3592e6b18b7b0ed33904f834d5c7db5947bfabb80adf917ffeadd162. 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/QM7281491067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593c8470ca8b8457d0a2e195ffa9eca14d38b1b121e48d87ae29384a75f8eeb. 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/QM7281491068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fbd7fa7b44d2a5dc3264d1b15aa77f36337a86718dfb83a3832af6e4c2618b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM7281491066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d4aaccbd63db9efb7071c91c24053639c063287162e4d4debd3121964ff4af. 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/USA371591909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a883978e05137e13aa3c15544bef41d8fb9c6c1fd19eb442250ecbf7b342bc. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA371591907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ee2b2cbcaf8bf46e1487f51cad6bd9b1f2b727b99713ff859ecf72597a148d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA371612608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e349b7ba084d0664fe49556bb9772039952f982e8ece871718f19a8f5b9a7. 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/USA371612612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e61f6962432a23dae65b39b1456d54251fd8f914f92f4442c25d43fe81ddb13. 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/USA371612616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c03be03560188dee0b7b5543937c0dabf457f26a723b7f19f5905610ce7717. 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/USA371612609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e7bd48266317ce087ac2eeb0c88405a63952c21121792f985cec61e63a4be8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA371612610.