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 0x984f5ec52cd29813b7011ce0a4b1857d075487f3d22ed351fbf06a238dbafdcb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/157fffc3-9714-4dcc-9b62-72a3710987d1.json and https://artists.proofprofile.net/proofs/artist/157fffc3-9714-4dcc-9b62-72a3710987d1.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 0x108faec7e0e6991317379ab9b56edf0a1aa8eaffaf012cfeb6af8f8328e4a3ff. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QM6DC1574949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0499034b5b5195b417df5084ac1bc08cc98576fd8031818fda98cb5feaef2eeb. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QM6DC1574962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5ef78197c688ffa4f5d4dd492f50d0ec6b80ce67ea5e18df57dde77cffe6f4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM6DC1569940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108faec7e0e6991317379ab9b56edf0a1aa8eaffaf012cfeb6af8f8328e4a3ff. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM6DC1574949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3173ecbb1fce95f9fe064db07fb89bc39ded9c84d381935e89fa8a8a7281ac4d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6DC1574950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b459ee8b45dc3215d305112eb6775819614dbc14ba5ec9a77db4a5b39b9a54. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6DC1574952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4893027b9b2747b54ed8d4ca90432a06642e636abf435caacc969647415266ef. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6DC1574953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2af821221e076f10f10b80e5692e80bc9d898cbbf6a23acdbd006cde321f391. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:31Z), 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/QM6DC1574958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e31c01081d4577d169a76bb1395d6bdbe0457b7424175d19f5af92febc19fd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6DC1574959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e7f0229d7315c5133dad556056a96946e81e6b7549a3510ee07f0be1fce5e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6DC1574960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fcf664a7833dc79fef756adfc2f4ff0c63e3b892e866f5cdb80f3db1a8d5c4. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QM6DC1574961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0499034b5b5195b417df5084ac1bc08cc98576fd8031818fda98cb5feaef2eeb. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QM6DC1574962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5fde05a4f79bd7970fab568d77a3ccbf218d7acd0c2e02bc0d1f9655e2fa46. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:36:43Z), 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/QM6DC1569935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5ef78197c688ffa4f5d4dd492f50d0ec6b80ce67ea5e18df57dde77cffe6f4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6DC1569940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316fb8534800df1555de5f87513d114ca052a36bfc903691e862aa641148df3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6DC1570070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c685e8078cb28c573a62da71abe2031076243c5c8233cbfa9cf9fef1a085b. 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/QM6DC1570076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174e9cad9f8e548a087e043e07ca7fcc326266ccb134bee941e5d25ea63652f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QM6DC1570079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316fb8534800df1555de5f87513d114ca052a36bfc903691e862aa641148df3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6DC1570070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaadaf47a4b104c0418d644e7282bc23c7adddac951fa061b280696528056e90. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:28Z), 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/QM6DC1570072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d13458bc8d3504713a0c028c939dad9324f39f98d1cfa974c00f74bd08dcdf6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6DC1570075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c685e8078cb28c573a62da71abe2031076243c5c8233cbfa9cf9fef1a085b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6DC1570076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174e9cad9f8e548a087e043e07ca7fcc326266ccb134bee941e5d25ea63652f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6DC1570079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b99404fe2387c9bb768caf384b64d2b86e4f010862abfe64a182fbd64dd9c63. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6DC1570084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f27f8b396c7054f68d8496fb8ffe97405b50f4be17b0e468b5b06fe3fbb6b4. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QM6DC1570085.