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 0x50a876e05e225e132baf8b29d90fc62b20aa4b5fffea99a66b8fef69a09385df. 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/e9073093-9cf9-467c-9201-e8f71f46094d.json and https://artists.proofprofile.net/proofs/artist/e9073093-9cf9-467c-9201-e8f71f46094d.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 0x541ab03b7a175bf98e59ee264dbb99b1a969768f81b6beee3f3103202df9a725. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BRWMB0001454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9377e8cb9387119261df0f7143cff8f31bacdce3952302d739e56e747311b0. 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/BRWMB0001456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd78e907d13ffaacc57ebaa47827a16e25d90034635723e16176f6bf1814d83f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/BRWMB0001457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222b9eecea827e84034c415435211b25e09d20b5772ef4ab7eb8ee652f520e9. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/BRWMB0001458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f69aa12e368ab6966863f254c1a2189bd5ab218dcac075afee73835d6376b3. 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/BRWMB0001459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3eadd946a08eea6c13f8fe620b40d49bc513f58f124c19d812ee2d74e5a03b. 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/BRWMB0001460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf845be91899d7ab7c08554e7b311ef2cb8c8ef4e182bdc7211038f10fa27c06e. 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/BRWMB0001461.
Fabuloso!!! Luis Bordon y Su Arpa Paraguaya
Boleros Inesquecíveis Com Luis Bordon Sua Harpa e Orquestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59dc037e5ac3e793ea3af7de02613e8d5d8a3089d225afd4646bc5a7048b4a. 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/QM6N21770464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7a7ac83a527f73271368c6ce32c137949935f8e80a205edbb8853231d4f78f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QM6N21770466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfcce86e271751a70d1bab4150d6c8d791bb05975444770ba46413823f1eed. 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/QM6N21770469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e142e9f07790dd3b2ddd958e17cb3f833da027af35854a0b5438d7cd934bec1. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM6N21770470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75696fb40b3fff8545cbd936705392bd5fbcabfc86b510099e4436408a66ce8. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/BRBGC0600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897067aa9affc387b46585726028795c21b20cfe36a6cdbc24ab4f8fa4ccdb2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRBGC0600461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c579b30f45e55e69fbcc87e2bf98f39a5bb4b31d2a0d0200e8d35a87d3ddeca. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BR19C1301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573c2fa13e5af00d08359f3c3cbcf577104826861f3aed3a519b1bd4598bcfde. 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/BR19C1301461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6562c643e3dcbc45fe9fdf58aae0ff846025de33d2cb2c04d5afd78e7aabab60. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR19C1301465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d5778265ca9fc9d76f10932e245cd5ff4a7186fbd47e33c3f9b26c5d0aa7d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BR19C1301468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec55895472242aa5e133b4e4872fa27ed851bce9388c3a4f79667ee96ccb67e. 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/BR19C1306342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601717604c21dbb6d89dd0085ef386fa73ef971e8e712e8e3d6fec7da93b7387. 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/BR19C1306344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5657bb3f283cee2feab8394c8eed46114305eb3cb6209edc07913003ba81f11. 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/BR19C1306346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533f3fac088d562728a1bc37014a3fb753a070982feca2403fcc44e0035500e. 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/BR19C1306347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a75706edc9cae177efdac5ab092cc151f154aa57a6dd475d94b061efe47333. 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/BR19C1306350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0d2f534843acea64f59c8db0677dd8a2a882fb561050bab23e6e5ea869292c. 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/BR19C1306353.