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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a7587cefc0a14d516dc044569cc8af7959f6eadf681522845889c57c016d7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77bf3276-7f50-483b-9684-7fe2fa00cfff.json and https://artists.proofprofile.net/proofs/artist/77bf3276-7f50-483b-9684-7fe2fa00cfff.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccec21e2f5fb338259f2286ae95765fc8c024f59e640be2a0459f418e56cbc76. 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/QZNJW2006987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aeef77bcb81151f25b5d9020c1dc37958932a44cf4a361708f8a231d9b75e4. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZGLM2079740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba18804fecef584ffb5fc64c16788ab70765d2b94bac94bf54b0e00033a3cbe0. 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/QZGLM2079741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d546d8b7d040aeda8de7d997a5337b2a19eb9ac15c7b570ad3fb4d7ca187b8d. 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/QZGLM2079743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be3f826c3ea6d19f3eabe8b2c79c715b67a6013e9c9e5bcbf8b9564eea5074d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2079744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1dc80ab21e7558e0cd4f9abb9c17c1f7569bf503e43f6f90d24e16cbf590e. 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/QZGLM2079746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d3bbc2ce9f67f94bdcff1cd562eb825c250a8bcb6e8f70d4a915abac17ef81. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2079747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5874007dcaeede1e705f28e5b3bd748012dbdd032285ef5a5d8797b21ccfe3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2079748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec23ded63264552606ce86085359e39125a5268229d66171f093242c9a4e5ba5. 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/QZGLM2079750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45b0871a96f1a027caa7ef1c8c74660f1d3a93ed5e4d3a7c452d6572a5ad2cf. 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/QZGLM2079751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cae470808b82b3c8b336b350af37ed17c54912fcb4c3468f6847f05ae5ecc6. 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/USA2P1700961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b5065035192215b34a4a6d2b47da061d2fe36b3d6ea93749067a8440fe17e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P1828387.
Cupido - Official Version Prod. by Roberto Ferrante, Ernesto Losa, Dj Conds
Cupido (Official Version Prod. by Roberto Ferrante, Ernesto Losa, Dj Conds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3410d9c3f56e0cb7478d27a006b151a6535c9d2f281c7724b3ce0111c695e3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITF252300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f846036603b87fc7152b03f3d8f223cd8f3738cd2b0234298464767bd2821. 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/QZNWY2397851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f940ff44dd9bd7f09e3fe31845eaa790d6dfc3cb2a1ef1c6e56f5a78943ce56. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2393738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d763ec16e4f4ce29d71d2bf1c15bcf0b3482bf580540d4fbce1e0cf84a27e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2187953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bf8942a18d81aa1d48744da5285eab8057e81c48b620107bf88ecfcf4f87ff. 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/QZNJV2139874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3bdfb32fb75c2e600755a9b6c34154f65223b5dc7d7b419b2ca68c7cc99925. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2036328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a16d8a352ca2897ffdaf7b0b60e091873593e2a8856ea846edfbffafdc7940. 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/QZNJW2018348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade8a4fc77c514e7885a054312322c21d0fd062f7fe140711eebe67df89009f9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ5AB2121465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5908cb63b2f42e7da814c7a26f7cc63d914d4eb3e81005abf6bec8cd6c38e. 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/QZHZ32163385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955d86ee0f7a9b03db1b2febcfb72d486308deea5d359a2fc6b6d1de6e12b2e2. 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/QZHZ42054729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955d86ee0f7a9b03db1b2febcfb72d486308deea5d359a2fc6b6d1de6e12b2e2. 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/QZHZ42054729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879c7ae27f946c6bb56270ac4177bdbf1e118f267a8ac818cee1e56b144bbcff. 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/USA2P2029351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec52856f35537df88a40e5ed928779810d6e1860ebfa7c9bd742d03682a61b9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA2P2032683.