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 0x09487f6bdd3dd2d2f918bf6d4738ce7c5d368850f3554b9e365f8a6f194359b9. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13d7dcf5-86d7-4ae4-997c-add0d0e8c1c3.json and https://artists.proofprofile.net/proofs/artist/13d7dcf5-86d7-4ae4-997c-add0d0e8c1c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Danger Zone (feat. DJ Tira) - Radio Edit
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 0x3d9e4941e908fbb462ff7a68d3a68e0f8e052045437bb0a2b7e287b47dc858ea. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ZBWNK2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd1d8c2ce12af1ffedb1e6bc1d88ef8c1420eeba01723cf78ea766a83669879. 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/TCAIQ2480393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29f862d34fd64b4dfad039ea1f0d6aec35b0ee2884c185eb6522fd5f4604cd5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJP2518195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26b297f28d627eebf63043f0df6a2f715788130ecb62cdcee2835829a9f0ed. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCAJQ2518257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77a8cf723867495e0cb3cb06091bd28c163141791645c5d15deeca50ab26100. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAJP2518437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649c8f1f86747ba441b1677f6132e2da0cab53dbbb7b11624bfaffbd54d891cf. 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/TCAJP2518602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738da0e47da533abe27ef303dc9ac17f0bdba6001044f345478c20c7cb125e34. 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/TCAJP2518773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba281d966f2c63b8052f58741144963b227f102bd2880b75a7cfe4b155cfd2c2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJR2526141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990f775c92460b7d868edb17f960435de87cc4585a89825988afcf6d44bbc1a8. 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/TCAJP2526621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf036dbc5d96a1e9510cfea47a1f4aec31c080e1f231af2ed1400576dde3f309c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJP2535528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6832eaf0888573352cbdd9ad1466b0284d2eaa3908347695b7acfa82c0b67d3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJR2555869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c53dbe8508e01cf02ba63fc3c37b85cca41e6f728bc2f941581cd69c69e843. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USA2P2527642.
S'yahlupha (feat. Okmalumkoolkat, DJ LeSoul, ZVRI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf8f244d35b0b99ba9337226c95b823ddc3c88a8079740042b023f279bec08b. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ZBWNK2300009.
Khon' Ingxaki (feat. Dee Koala, General C'mamane, King Lee, ZVRI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec92f17ffea2b20618f6bd2977d9d0e22e975e19776dfda33d5068a5b2a5ab. 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/ZBWNK2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a621630cdfe9cc4ddbf8a15b558ce0809ed5d22aaa21dbd052b60b25ac7e8. 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/ZANO72200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd38c8db4c8acee2dae2e93e84e8fbe96139781377f50c1238628b381a68eb7. 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/GBPVV2300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2478ab511992990b816ead2560e50856b55a868a86d2340ad531388b6e2c0. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBPVV2300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd38c8db4c8acee2dae2e93e84e8fbe96139781377f50c1238628b381a68eb7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBPVV2300382.
Aluku Records Various Compilation SA Edition Pt.4 (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3ffe4b050b7c9c571f534dbf3acde082e10b3ab4daa1b2f245a348272840a1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBKQU2404441.