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 0x592774b3ba1f3b9f09d1967f15ae7a680aa1de896590340d0b57ea3f86a32187. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/260f611e-d2ac-4079-931f-f8b81d91d02f.json and https://artists.proofprofile.net/proofs/artist/260f611e-d2ac-4079-931f-f8b81d91d02f.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 0x483e2ae9b70ecac16b8dc999e61f0cda385e6f25d62e770cff81ea5211f0de46. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHZ32030175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29867ae9fe913f423b90af6765e672bc6c82a00e48e80e28d701ed05a2db70a1. 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/QZHZ32030176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5160bab0829205410f50dce700cbb2bd3e119df68fed4e14607caa625b4854. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZHZ32030177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e67d2c5f61de637ce5dfb3ec896771ca95abd3dbf066469868b02d6f978ef67. 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/QZHZ32030178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cbdb7defb75f5a33eeb51bb20f9a053b9c1214992ae113a27a807d8ce6e5d2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZHZ32030179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4925c4611f5230d7fab32411438cd2a7410a0fa15de42f02dc2204c224602838. 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/QZHZ32030180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa263a1feca5c8c1bd938924f4b0de9873d300f9b1746ce8a45b03fe3ec59e64a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZHZ32030181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd51a101eb23b43301c6ec35d73cf94ab7286e794a76f45c0986e6ec384ad6e. 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/QZHZ32030182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2102c160ec6cc3ddf697bc34a064abc9ffad766d6dbd3b89f7b1499e8df362. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHZ32030183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fabcc08f5ec8eae5ba2321a87d24572f6499d41aa16c4fd5f8273f7e05440b. 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/QZHZ32030184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94ffb03ea8b3dba6869b90cced8d0bb1a3a249e68a21295ddf63dec90441fb1. 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/QZHZ32030185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589220b9f02eedd7be815ffa055bc857868b0590115ef6e5e68ffd4f6f79341. 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/QZHZ32030186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0ad0b1b6f7a4ea0bfd5c8792d2aebd624c25abc9b527c9e030674a8f33f1a3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZHZ32030187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecdbcebda02399f6857fa418e3d65062defc74838e873c84dc1cc726215c2bc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZHZ32030033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab6296a835bf0ee5d9690dfbf56c9accbb4c49e6702e19df11d0f2e745cf97b. 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/QZHZ32030034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbc996e9808eef7ea21517834d0ff1cb871a11d3ecf0feddf4a7a43b994d53. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZHZ32030035.
O Difícil Aprendizado de Aceitar o Diferenciado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2814e1529fd226fe0d3c88e71da526f3a61bc5154b5d815f153770ef6d3c941a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHZ32030036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28559a2b9f12e6fb7ed194fee86b8e642ec52008ce19de81382e90c5afcc69e5. 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/QZHZ32030037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b27c36e025f0bd88ea9cc36a889802bdaadd38fc2e540a8924b975b7e0121d5. 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/QZHZ32030038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32d73905a379348bccad0b37e4a8e62a6afe1af160b8e0254c68437748714f0. 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/QZHZ32030039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c931be33bc585a212588e24508cf295a17d06ab5a706dd7753871433980871. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZ32030040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd04c9e0f75f631c6d6655da4cb472c17826cba2daadfba6322509bbcaa9bf6. 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/QZHZ32030041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775a40a29c32102f1872f50e34ed5ac41b4740936dc7b69367ace73cde044acf. 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/QZHZ32030042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f84f32a1ce2e7ee6a5081ba6319301d9263a893fa9ef088985adf5c0dfc35a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHZ32029844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ca3905800db80779057f14df90332ed62fa795369b18477dd7d1f4a208ea20. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ32029845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc312b4bd0cbdf400dc612dd75b93c28c35d3cdea7fe8274f772d23533924e1ed. 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/QZHZ32029846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ca9c5fb9d33ddbf9785824a9ef50e561c16ae155044bb163e6f86717e76012. 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/QZHZ32029847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2f0ac0ddd064054e7bc41bd984e0cc9d6d6bd857e966759376d712c31577b0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHZ32029848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831bd6cc02f60a10f8412714782da284ab0561b4012c50702572a424582ed50. 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/QZHZ32029849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb63787a1e89dcb47dde075f969beafe8b322db4cb2321838922800c631cead. 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/QZHZ32029850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff51052fc5195c56bfdd7cca4f11496e69861d69bd3d7a284550d8a955b492b8. 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/QZHZ32029851.