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 0xf08b89b8069327cbd96f855328a092d07b2dac5e6849c711931f97b399bc35c1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f0184cd-b6ca-4886-a11a-0b1e19b25916.json and https://artists.proofprofile.net/proofs/artist/5f0184cd-b6ca-4886-a11a-0b1e19b25916.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 0x43e4ca704d85fb9ae0b28dff31d67c2966628f24346d8f807fd48dc8793f2643. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:45Z), 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/QZFYW2097784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fddb50bc577fa2bc5fe8f0f3ebd8f0d69f020bedaf554daaf97e4bb8a86132a. 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/QZFZ32054699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e4ca704d85fb9ae0b28dff31d67c2966628f24346d8f807fd48dc8793f2643. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYW2097784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24485d5eee006382ee4da63834090806a131f23310dbbefb708ab417079eb0e. 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/QZFZ32054701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fde8b6872a1fbc3693bc7c0a169c11a232b5872aafb74557cecf6ffd20bd572. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFZ22014031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ba73d5ad0b43e98d0d206f4b0652ada259cadb5e40d595391e22b8a881f5c5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ32054702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd57b2284c830e4c5cf9d50dfc11fb22c185f9f78eaef996607f51d85644d9e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZDA42172450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34130bfb6afd6442b31ac551e2d915b6110bf1d8b5373752c38eca76813d203a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYX2431753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2216c1b0fb3c19b05b72ec33726d746ecc271ba76ce9eb4b7cb48d37e51ed. 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/QZMWW2411515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5cfb5ea4220fc6e6843f6db9a02bb01f7c0c9846430f9ac65c228a84f4795f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNB82400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce59ccaea235d80e477ea259001f1f79d862d06bbd5e96d1478107a2704e66f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZMEV2402640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48cd6c5a056534bfdf14889e8888eb8a628ec3c3624735c7e1c5e268524f36. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZNB82403471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebc0178ab281c7fc03895f9db268d1cc4e6d65a30ba84637d635615fb0a6ead. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNB82403472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50be5a601a59033b2074375b3fa44ebb069da8b4d01bf197297e2d2ced220a11. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZNB82403473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0eef4a8dd785317944ba34ddf5e6cec4e54f04f90e3a09c45a721490e9a102. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:06Z), 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/QZMEV2489896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea16ceb82faf0cef2cabb3eadc65a7976d1bbe9e0f0710305aa19713196255f8. 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/QZNB82403474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2216c1b0fb3c19b05b72ec33726d746ecc271ba76ce9eb4b7cb48d37e51ed. 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/QZMWW2411515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aedafd03d91da3cf4aec947d0d9f5c07e4eca6707c61d347e8fadd2f765c70. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:33:36Z), 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/QZNB82403476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8dde68c6d98caad2c3a2f7e92ef56e97efa41852c6f2c8bd631674d79efa7c. 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/QZNB82403477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb68898194de9c5080e968a4268fd78482c5a8ff30b34206fa719ef809db3cfc. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNB82403478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf8e992bba2369b7afac37ff2af7a6cdcfe65b0302fbe49f32e5c2d701b5e82. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNB82403479.
Hamilton (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf169be04044c73991bb9444ec0b3151350f9d2cafd1dfa7749c6417e45ec6333. 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/USAT21502600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488a87865733bbea9679358cb1706a3a440a4af31478b224d9d5d3146b269820. 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/USAT21502622.
Dog Days (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762d9685e3ecb119f95f902c9d0b1a4883e15ee2d76108ceef3362b509f450a7. 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/USLS51827301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba48b83996a3d4513661a8764aee7890991069bb4f7facb57e0e0787aabb4dc. 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/USLS51827304.
Blindspotting (Music from the STARZ Original Series, Season 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e02c7bc9ef2f2770ffdc34bc0a099043264c9fab6291212f82c400c0fc1de86. 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/USA2P2130167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd00679f0c87c7ef18bc6b4897f35f17cdcbbebfe3a477341d08cdc8c3bf85c. 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/USA2P2130186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1668517f34057a4c264c317f77efc35168379cbb397e1d8a65ec6c6402ec4. 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/USA2P2130181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fef7583cd5c6870923896a06f6d70313665546de3a3620efa4964951c4f8f9. 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/USA2P2130189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeb6a38c27061699cfe02f3c45041bd0cde5c3cdda0662bdaeabfbef9a7d3c7. 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/QM24S1704218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c56f4af961afe1c03c06c315165b29c2221bae0868a40c65e7647668ade9e. 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/USAT22406967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff081180b4378c81fc6dc8e62b056eb08a9644770d4630a3da04ea54603e193. 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/USAT22406968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc304b59a79f8b8bb8cd2ca9ddae44b10fff84202f328b8a89bb959a6b1ed2b. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USLS51827302.
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 0x4dc9d7733cd579b01d69b730e2308fd284bc2665a59ceb02fa06e5b152002c1b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USLS51827303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16c5eecb25bdd913488c03a6e2ed507423a9cd708c2482f0c10d6e1f9931795. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USLS51827305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ea11b44af1e3e1497a1df6749e913cc48dc72145c460c878db617c2ac32bbd. 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/USLS51827306.
Blindspotting (Music from the STARZ Original Series, Season 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a0b6036d8a452eec8d9e24658962bb53ef62ec5f77e87c1d98c75a5f4c07e4. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USA2P2322530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c80af7037dcca894f03086b67642b50e1ebbc148389ed93af59ec6c9542a9c. 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/USA2P2322509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80ddae8b41ff9f6987e2e7a831368f12e66361af0fc9f0d3e29a7df9138db1a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USA2P2130182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512220101f3ab774ba76a0f3f372d1e3a7c4b7a180592dba12b466dce536834. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA2P2130180.