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 0x9a314ce8409457758924bc76bc6f3c29bf457ebd85abc5892150d7b898697621. 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/21171daa-540f-42d8-b9b8-b0bab8adac17.json and https://artists.proofprofile.net/proofs/artist/21171daa-540f-42d8-b9b8-b0bab8adac17.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 0xaa2cda6871bcb281aac2a98b6be35ca4def93f4e849684fd5ea4e696e0da5b1b. 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/GBLV62016573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e84c9eefc2d39291c320af515e76bf7392a2097d53bc78eaa100a7ce8d7b89c. 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/DEH742412196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a641ae2a818812a7f7e9970ecb9ecb8b55d1ea9fae016ccf0498f8cee041006. 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/US83Z2038312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212728030cc1dedf126ab53eb81bbcc057bcfe1e31b1f12771ae84ca3bf1b71a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2038315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3405c8bd9c09e2bdb9675da5b2e293091c33b22ef2a9e19856f262cbfc864e02. 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/US83Z2038313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c96e7e2d87d80638b2cdc90bc72e26d17dc55fa7ba23dac25636c7f8fc4e5d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEH742320764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c7d5cbf82f4503c7a6aa0ba663d4532571b8d2c4d57fb651e3ebfac67ad52. 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/DEH742323137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70acd9b8a129b95b81381dd7998a169421dc1397ff3e30b6e9d2387964ce0f6d. 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/DEH742325419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902df091fbdb9c35492458e8b00f163e9b6ea4e111204262cc815c5ce156f4d7. 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/DEH742326576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04ba7a5b690cc42cc9bc460161f5f1af74e43ce24d04fb68aaca223e29daa60. 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/DEH742326581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469502fbc48b831adcbcbd4507b8e6203e1d2bce46d40182a092160e7230659f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL8RL2435724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409cba260f3265aa6bd3ef24ba2495075a9fa5a1ca4635c61eb6cf66dbf094b5. 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/FXR392400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023da1cdce7dcb814398717676cb9faddd1c6bbf2c2f5cb4a1f881d4f6ae26f6. 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/DEH742417549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e84c9eefc2d39291c320af515e76bf7392a2097d53bc78eaa100a7ce8d7b89c. 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/DEH742412196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bcad79581875a8716a09020fb205d5ed5c28bcfd657bbd4c2e50a78a68fa1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472473114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae147908c84daba3df75157a1f20e24204d93ea35ae792b3dcbd735f27a9956. 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/DEH742409541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70acd9b8a129b95b81381dd7998a169421dc1397ff3e30b6e9d2387964ce0f6d. 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/DEH742325419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c7d5cbf82f4503c7a6aa0ba663d4532571b8d2c4d57fb651e3ebfac67ad52. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEH742323137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c96e7e2d87d80638b2cdc90bc72e26d17dc55fa7ba23dac25636c7f8fc4e5d. 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/DEH742320764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3983dd1c9b6115a2bb6e2936bc9b004fd41aba92c085c544ea6cb9560e000. 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/US83Z2236771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf554658516e55d749e7ecd96a2203d91d2bcefc0a197f4c6abfc2dde5fe237b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:09:30Z), 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/DEXO22205707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a64f6b93d355dad6ddad066d54b92c0aa6f9641e691a6515e4623553a44746. 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/DEXN92274033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2b62c80fa9021f3a4d407890bf19ee8fde9e5777e6a773c2d06f1dcb28bf6d. 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/DEY472271370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940958d6ac637e697712e693b3587d4723c8fb1ad428700baa20a74d5cb5362. 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/DEY472271371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76684012d69cdb7987175a5419b021c7352a55d249520f5493dedc118bfc60f6. 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/US83Z2111475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a36100b0c981d6462a9fbcb813553bc5273eb3ad7759f160bbaea9ddacc948. 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/US83Z2111476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41c7ad62a9ef32884118b8ffa421abcd348684660f5ca698da4a5440d7b12f6. 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/NLHR22001088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e3062278cfa709b174ee5ed88ccec4495f99cd91562b5d3c9d53c10dd4d780. 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/GBKQU2000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3625eed2d56205ccaff942be0aa8909d08a311f0dedaad26a6bfb6067aabc06d. 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/GBKQU2000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baebe23f2a7936cf91485d5c7a7dfd9558863f5ef44333c33ffc3608d215d51. 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/US83Z1910319.
Lucid (feat. Nathan Ball) - Icarus Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db2d5472655fb76400ef3552ffcef8f36c53ae8fcc356dfe8f46b7746c5e7e3. 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/QMFME2160469.
Wait for a Dream (feat. Baerd) - Heard Right Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ac281cfda57667a0b953974f72c6e148cb0bff33a831de4ea4a7dd7a72845. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:03Z), 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/QMDA62151189.
Tidal Wave (feat. Bien Et Toi) - Lauren Mia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240d37cd8945466963980d67ec03eb4da18126f2e1f054d9e715a4204d890726. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMFME2105597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3752fd90e0e09563957efd12db858e82ac38d9808fa4ab6b9df0708687834f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:26:16Z), 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/GBKQU1969600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4cb6cd55347bd89d38376c16aa4245a81baa0f2a801eb498678164d79d2825. 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/GBKQU1969609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fe6a84466f71fa467e5421c4626316ca958cf99c0175c2d7adfe7733e14ad8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GBKQU1969612.