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 0xb04c7a407add2fdc83cc6a7dcb08d7f6755811e3d67f0410602d1aa93c2f5a61. 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/50a86e28-cb93-4f82-bc0c-00e180cc9c6b.json and https://artists.proofprofile.net/proofs/artist/50a86e28-cb93-4f82-bc0c-00e180cc9c6b.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 0x024151399ac4c5a65a4907a1f019cf6bc2495739cb6025816fee2edbc15071ee. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:41Z), 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/QZHZ52040373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bde394fa3c15101580633b668c9549c582573c58e9f200223f343146d8e902. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBRKQ2273409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78ced166c44390d777199bbd1e34e7619c69015be0b0675291aef6b24f0855. 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/GBWUL2282868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3c377b0b605442748158767005474573441b2d9d31ac117b00737f28accec5. 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/GBWUL2282876.
Rock Danger Vs. Brasil Grime Show - Major Rd X Leall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8662401f6397e545db3638cfb4a0c144386413730c6fae2447d8c74b41bd3c72. 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/BXQZW2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20734cc3339e95700a000f8d150954e2a5716a59c66f28454afaeb199044482. 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/QZTPX2115140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8dfbf16d6a599fecc85f15711ffe983d9676637dfe886c3d89b56925303147. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:24Z), 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/QZTPX2115141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4401db3791cda9cdef731868bf4875bc18a7c93b1c89af2cc38757f5cd678b. 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/QZTPX2115142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0b4d206388c5cb2a70e38a6328531588d343de6237102a44d6bfc9aaf885c2. 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/QZTPX2115143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce014aa921fa7e8cd53b240002822241e30d7ba12744078f8534486fff73ce. 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/QZTPX2115144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd2942248cea2b794e03e1431df9d0335d0b20d9421fb0c8170ba3f1e5140b. 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/QZTPX2115145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db51f646c8876331a99917327b48fcaf5606095fabeb655317a7dd6ee5b4788. 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/QZTPX2115146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df0959d559236b0c7b3f4cc855eebe4c94f5fdf4d0e1a64c2d87526d6a056b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:09:52Z), 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/QZTPX2115147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1140ac79260a02690167fb8c9cf647171b747cd8007fee8125ecf37e4761c435. 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/QZTPX2115148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cdaea9377320faa4eedfff1a985cbd7be3fe630c44165dff71ad58fe5a2cdf. 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/QZTPX2115149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9e3779142dc1c7d5d312c4d4abc23aa9708e1f67ce8917dcc643f3671bcc61. 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/QZ5AB2122619.
Rock Danger Brasil Grime Show - Big Bllakk X N.I.N.A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f51e23c71815be1cd3cf0812f3c8a82c6221f6982eb9ba79278a8832294e28. 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/BXQZW2200009.
Rock Danger Brasil Grime Show - Mc Smith X Young Ganni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe5c2c3b18e28ac87d82f154620daf1350957babe67848fbe6d91dafe0e181a. 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/BXQZW2200011.
Rock Danger Brasil Grime Show - Vnd X Thai Flow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cfc044c819e2f0c3b7f5b695e76b8bfd9991285cdd4bf66340d7f528095ec9. 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/BXQZW2200010.