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 0x3285c658e1fc3289ff68d92dc8f17891229622fb2aec1fefd731be10f83dce69. 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/e03cfdb9-be89-4b67-b8f9-f89300145677.json and https://artists.proofprofile.net/proofs/artist/e03cfdb9-be89-4b67-b8f9-f89300145677.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 0xc571a450766bc1a62d060155c6e4d38b9f4bdc3c41f6e8a517fc7b163088de34. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNJW2039915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9602677483d8610b2d014e747672ab761a3fc6943f5fa7924f8c389dfacd22b3. 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/QZNJW2039920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cd32f6efc582f4c15b3e7a774a02c86a110ea1ea32907958cfb1b2b63cddbf. 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/BXFKW2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4263267fd32c0bd7f244870c1591c277c38e671c88ecced25467d847f815f. 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/BXFKW2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8af0379063889cb94f854b1a93b58305ff248f4be38bcb621e0623643f1052. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXFKW2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceb2f5d6e1f3b030498387f2c1543547d3a1404e93bf69878fd5eb81c99a6c4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXFKW2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1fb535352b5d26184c1b418cd83fac12b41efb85f2acd22adfb6a78cb01289. 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/BXFKW2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd8dc10ed169ffc0e710e13850b619d3e0758edbb736e2f822e5e4029f49124. 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/BXFKW2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6de767d73344d9d56ff8650122c8484795bafe863cacacfca4ff873b6a8e26a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/BXFKW2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e5e165e69b2629643cd098ecb73dfec8ffbbd8b537576361c4bd83acd8a1e4. 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/BXFKW2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adbb532c3d600974cf57e33b215ab846851c502749febc914e41dd24137c53a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXFKW2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9ce2a5ce0fc9f663f9a63ffa9bf5621c7a95a59342fb3b4ca20b43bf4f897b. 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/BXFKW2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09797b6e05b63b8835de76fb916a8884cafb1684253e5f4beba4460ef0724487. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLZJ2471503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1227c5364dd624b0eb5c3ae3b89ed5702d888fe54861e4d5be12a00d45b560. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTV32479495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84098e9015374a0474eb649239d0a92d4c3f3e7bdc0c2c524eaa27c8876f329. 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/QZZ8B2402696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789c7d4791fef2269c4cdbb69d915e6b1da500bb1eeb0b1694613ced90aeeede. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ8A2591174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dea63d395dbe1b20f96271b31550756deba377d4698c22171a6ce60168fc0d8. 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/QZZ8B2503447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07003967826ea5da61e06c304306b5fdb50f0ee9cf9d4d6e95ba8db2cc7e8b00. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BCGBQ2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2342e03e9bd468d862022b134c6956af4eed4103cb98ec7b10afc1c2a0fca. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/BCGBQ2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5e3e2dea6686b49cd9953c784720ae1769fb11160ccbdc2727375aca8e8d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRUM72301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5e3e2dea6686b49cd9953c784720ae1769fb11160ccbdc2727375aca8e8d3. 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/BRUM72301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051ddbc628f30b11368914d0d395f5d86c14ca2c99a4ba2420e6174293bf2c97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMW2292100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631ec8992e8975d5a5830c27153a39ad297f485a540cbfc4553311e06927290a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG2352956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca03fe0a2f6a2a2e864e02feb20ff23025a304b68e3d0f5f6df07b2aa798394. 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/USLZJ2312488.
Maldade das Ruas (feat. Did Brock, Murillo Zenki, Phantom Mob & Caju Clã)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1080c344bfdf7dddac1397fcb3a73fcef586d3aaa18d7370ab864af374ac101d. 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/BCXVW2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55199987797fb248f024cb1dbd9edf245cdc0efab106c1e5883dcaa8ca427770. 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/GBRKQ2336647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e546669ab72b48dd611988fd2a3179d0906c15cb83a32e4b6d6e90d1fff35a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/BCTVC2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8d12247e0b1ff8d909e51a1c583b2fade67d3a9d9ffa20e2160970dd2ceee. 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/QZW9M2291745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeddaa62cc97725fb072bc9c70bb55be8f6e6724e8464b4a8afa676fcef718b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/BKV4M2400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de43354e1fa02a84db4fee9a05e7a2f665882db9e0d93257cbc420c969abd92. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXFKW2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85efa9749b5e73bf239e85971633ee23206332a5fd4da599bfe387d9dd68cc49. 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/BXFKW2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47341dce6c80aeafed1cb602ef066639ff296121dc433ebf2dd960de5282fb2e. 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/BXFKW2200004.