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 0x4ec69eeaa4d06bbd611cb278e1ebddf08f5c927fc41632b73a80b311f9b0ff37. 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/40b4ffde-6b6e-4fe3-a5fe-b19791ca5134.json and https://artists.proofprofile.net/proofs/artist/40b4ffde-6b6e-4fe3-a5fe-b19791ca5134.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 0x02eeb81114e69da711f1568da9ee6bc319464fe8200446487c8838775e56d53c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRQL52200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81507b3cc76d71a990aaff6a4c8beb6aa59a9ce24c3b27ae7ccd95929ddd6fb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRQL52200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc492550fa2204f853f30fe52e74015625d8ce44fbd30a80d919e86443a962446. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BR2SD1000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bf1af2fb54038cff9a6730ed742d459edc7833e63ee5ecb441f5204d36721a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRQL52200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d2c70b31b05bbe509330590fd4de0fc15bc46e6f61671d127056b2a44484e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRQL52200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8555ab43e13455c0d21510e6880e58550ff7369f0b8aeabc6c015436c36eeca. 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/BRQL52200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2a5d6557ce2101f609fa027ffc811256421ea854f3a65cddc53583f8df7c0a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRQL52200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46924253be3b97fb1dbb809e3b7fc8937e3ed14d266e1ee9550aa5e136a3a331. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRQL52200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22348e6763d3b971375e9a1bd31dbe871c66c2e9e2d8e2e2a37cbb9066cab735. 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/BRQL52200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11407a8d31910c15447f4c163f71fef4a1289e8313cdad6db4ad828e46c53704. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/BRQL52200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f80f58cb643ded2aa039c50e9fe1e0e46bae2315470ad55c90f396efaa0e28. 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/BRQL52200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab7ae2d55971bf4eb8c220a9c5bf773c3874e0e469517192906b234a460d253. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRQL52200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd76a1f319daf24c09381b2b30e7c6616e33f0188ff2cba960ca5632d769a4c. 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/BRQL52200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a8ce773ef9eb9f52dbdad3769826b756cc25fbbd4a64c6595c05c8c8686698. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BR2SD1000304.
Parabéns Querido, Vol. 15 (Projeto de Deus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd087bb7520cff4336c0b6e35fa98b3e6abed76718d058e129400fe3120947d4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRQL52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee0f5dba124c019e26d05fd585a7a5773e2223fc8173057d566168ac8a14d47. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BRQL52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d69d601a1db8e99b6f876d0a8291c4f5d9178c6bf69305e0be02740c9ca192. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BRQL52300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703db56bee73876010d414bf12ea0c9b0ff0ea97a8937262dc78d49e828d93b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/BRK1N2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5c2165d7c6feba84a8de70a3dedc540b55dfa14c5d9617acae592bcc094a1. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BRK1N2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b5c0e922785ba779e7ac80ccaadfee288dbfcfad5bbec7d17a0a093a14e6f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BRK1N2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9aa2631747f8088345872125b8ab78302e14fe63c2c3f325233626d9b7cf30. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/BRQL52200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabd4d3fb4230b1d7829a5f8de7a61def3ac2e7c5cebacf72a2e402e0e7e854d. 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/BRQL52200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911fc21955ba43712ac64467464133391679ea33acc5fc57514d4458b9e46399. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BRQL52200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4720f7374a8713da9f799a70e118f2b92ec71d58abdfe461205e39936244ff8. 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/BRQL52200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e43e53bb2605ca92e6b6163a08b7c6c7aec1fd9c7b1ad1c46f49506d2d7caf. 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/BRQL52200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009a3cb87a6b5a9ad7d82b0e31fcb07f797abbd689b74396f51e94b419796442. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BRQL52200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a9c16c6a0b2e1170652e0a86ef2c62d25ed836f948ebe378c7bcad44e8e9a0. 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/BRQL52500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb594775baf295a300d6ddda00c98e99015b6b4ee967dad9bf0267098027d4477. 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/NL3M12400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b8d49da72a051ebb885280dd091fd5f6c610542f61901f10061124d27dc425. 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/NLRD52216867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88a9812ee9f71bdffecf2e453104ed6c78fe9ea579583581f9885628aa0182d. 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/BR1841600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93127a9ba5df8fca9fe44e8556ea91f89f3837db30eb2c0383e572da565191b2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRLSR0501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa1394e7ded7d623682095e59bbfddf3dc99189d650ac21750d8853339236b7. 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/BRLSR0501011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233850f252be5ba0bea0db0e212646c47bd7af4593d44f3e55947304e2b464e2. 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/BRLSR0500511.