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 0x0edbdbb1836cbeafffe71c64274a954936c058d7239feecff5578620b86c7edb. 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/6367955b-8a02-4303-b945-ca1ebe4dbc17.json and https://artists.proofprofile.net/proofs/artist/6367955b-8a02-4303-b945-ca1ebe4dbc17.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 0x3a653c2753014d3948f3dd3dead8409d3a5c37268b585afb3695a8de1d6e1fe5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62012629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b624816d68ef7de80b90021c73cb566bb1b306c1a59d4c10bc8fd3b399e4d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFZ62012631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1957b0ab7f279e65f5ba42d970e7440cbbca28fa1d1406430425e1b756146a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFZ62012633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4702fdd64e74a05ff1ec6d5464ad5ebc33b545bc5c6eceecf7baf03410c7bba7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZFZ62012630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e347c6438d73833166097e75c1fcf23f1e90f0db34e11f06e93ec24b3a03d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZDA42438581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4f831075eaeaab23d28f248512c000c45dc57733ea15588dce128e40539e47. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWW2087525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1a84e584c827fa01a5d885d8643bb4a95c6dbcef104d36fa30dfb9f0a0d95. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES92093143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6fa84e70e259ccad3408004c7402d4c863a0a1e95c94d4f10b881447c025ff. 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/QZES92093142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9cbfe24ccc1a8e70ec5ffe6f9e219a81972a7633ee575c9b0f051bdd2f5666. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN82070472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5fa0ad28a3919b12735b37b767665729ffc8411f36261e243441c86e116194. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES92093150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91fb04bc35a16ae5e4564ce5b3c88dfef9c0b573a61b8cecf557decb498c3b3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZDA42438789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d58e254733af98eda1dcefdcc128719412a50ac068432121be464ce2c1af6b1. 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/QZK6H2148722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01986706c67a18e610015d4ec15d3f827e086aac986094f04ba2765a98a5a5a3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYY2191448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb96e71f8754e75898f1a668e051c7e6e45fd4555fbe43a37a8f869ea2888e. 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/QZFYX2207657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b88dc5e1742ec1d11d6e4fb140ec08e0a8e0ce95806f1daca45d0637e42b0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWY2277551.
slept on the floor still dreamt about you
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fef97f158d6abbc8c5a04506a3b043dcf314d2a1799f74c493e6b2a3dd4c8e. 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/QZTB82248192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c741c8f481993b5e7b6f245c4c15a31920d486ddf52094ca19b6b0049c499. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFYY2337392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef296c93abfbbd76936e6e34c3e5651a781bafb504c32675865b2924bf75f7c8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6M2534149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf84771d9b73a9121442a45a20698ea1136a778914d6fdcfb649152ec95378e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M2534162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4627c2a9e9dee4e2884755a6f1e3e5a050929f240e8a2fb8140a406c5cf1c. 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/QM6XS2002492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68afa60e68f99ea5db11d62224aa3cdbf07d29a5b0e2d898dc0473a61cbd265c. 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/QZTB42275210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26a669b9eadea05d16dec59021b41936a69d35afabc00c59af12531336ae7a. 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/DEA622202012.