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 0x4f59084cc99d1ce7c17aeb98646d79430a24c8581f72b08b5ff370c89e995f47. 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/e05c6aca-a4c6-4b72-adcd-0dab6a1891bb.json and https://artists.proofprofile.net/proofs/artist/e05c6aca-a4c6-4b72-adcd-0dab6a1891bb.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 0xfddfec0c98ef7cb36ae354ce6f48499bb1931e47479a05504b562f358cfc9627. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEKF21900752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059d3743c32df6b0df80898343d5865544a6c3ce332b27b327caaffd9c02b162. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEKF21901044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8621f4b59458b4233a328fcc839a5056ac3f7a3b2ab0a6931d8a4dd9f3796. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEKF21901266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5719db0b8158e64e16b3c6c5c24edf1823a23b21603429c3865d8b8f6f6a26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA622000416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e6d3c6a7db9f4a0238ce0e7157ac6aef47626eb32a84f9efdad94b3d9b157d. 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/DEA622000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3a0b3660da1708f0d3b6c7177564b7ddb8ae0e77601ee32b06676302d1d601. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:23Z), 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/DEA622000863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0ef04e052b822e7cd938091390c29b18906974f394ed620c1f640d92dc6f7. 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/DEA622001008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105245cbd077b451e27eeb388a372bb45a239bfbc00d4add8bfb1fadadd02669. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEA622100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9a07afacb133b5631957b3f014fe80641b2ed1fa327877eb1462630b1d97d9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEA622100251.
Blut (feat. Massiv, Manuellsen, Sarhad, Azzi Memo, Pietro Lombardi, Ramo, Fard, Mert, Z, King Khalil, Sinan-G, Kay Ay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd4b301e5791dc8fff84e26f959c3b31d7ef08b5a7d4611ae26444ffba50895. 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/DEA622100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee30467bca681c92cecede8350599236522c91f7efb9078a6cfd37ebc2d9b82. 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/DEA622100244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67a3addc272733960c1ae16698d0c47af3836c83b264283232c4f2fee6bb4a9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEA622100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9a07afacb133b5631957b3f014fe80641b2ed1fa327877eb1462630b1d97d9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:05:30Z), 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/DEA622100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ee42d4a618e0b4f16c116f17da40f721c2df7d3b69d7181a89b604d3537f4c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DEA622100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2635dd4b366365cc7412d74a9c01f0ac33bba041db57156cdcbfa4148a9d76f1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:55:29Z), 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/DEA622100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d4d37b4cf5dbfe3a52f6ccffc2ac9a3b5afb5edf222e564c02501ed5ecacdd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:32Z), 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/FR2X42231744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a1ea24bd549a0734cf2871fcf9c4a88c8c463f67128a23d3f40fd4d0fda108. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:50Z), 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/FR59R2223424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440d2e1443b7253b68743c4b2a0793905ee83cd662e81934483f91bd482a0eba. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR96X2215720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190bc285d8b522b7e4f4696b2e738f1172a87e1461878d47074506094e75d6a6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X2292849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82394b9ee4f5aba781edbbf8ef97a1c016172b76872dd9f6c0b4b325e35e5529. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEVY22100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf510709fc6f3a4f4c9f4cc5eb2502f4c7e0be00f2efd4530c2d25e727177b6. 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/QZCE61842352.
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 0x11f7af71a76777b70df3906903d618a42d1b20f13fdeabdfdd8332750f1436a8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZCE61842357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736b7900d5efb1aac35c2abf5ca8e3dd7e0548812fbdfd8358979e519d4e1a97. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZCE61842362.