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 0x4533f5193ad842b7557191f4b366a67b222763953afea187d0160b53e85f818b. 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/9658baed-af2b-4887-a99c-0f82d8dae9e4.json and https://artists.proofprofile.net/proofs/artist/9658baed-af2b-4887-a99c-0f82d8dae9e4.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 0x0463c577374f876c2840336dc0dae7f2d2e65993ba9044b31535ff81e0984eba. 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/DEA621700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d83deceadaf4f431d0f290e54bbb6b90ccf5dbb3e4635b3ba40fdd40a1ba3. 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/DEA621700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19fb73951991eaec93235d45d8237df5c650f8ca3369bdac27fe01ff3e5e9cc. 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/DEA621700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a49b0693ed6ca5d7e46bf7c475ef4b1f35481f1d57fb3c40d024a66f20b23f. 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/DEA621700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358beca7b8ae24b5b117a57bc2c12655c9b76b5a833b6f9028bb1f42b88abd58. 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/DEA621700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd17ea402c7e967542ba96d0371cf5f2b46be639764f85f1b16cd3061a5229. 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/DEA621700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850066a682aefab2689acede862014a968940145d69527c7fbae9834662b2909. 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/DEA621700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413721c46ca8d96db5c53d55db21ba362bf36bc9c6f9f0a8f184fcfa408189e. 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/DEA621700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4605c719cf60cd1751116a738bad615235ba91435746dff4e7b26b423641039e. 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/DEA621700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313bbc37d361bfd03ca4ed1bfbb4ad81c3097bfadf224a3bce6795dede78df57. 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/DEA621700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dbed47e3a3146b234228c95ff96b055bc978e51720635684c494af5053ee26. 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/DEA621700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb5d1e6bb6e5dc483a0613df4da90d78ecc805815897d8cfc0fbc5682517ff. 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/DEA621700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a9ecb555f4669873535546c17492b1be87596889aa2502218abfc32bb20c9. 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/DEA621700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06190d2f045da9cc9273eeedb610806674ca92dfc8936b2b10976fcbd3ed32. 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/DEA621700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48189c7214cbd5790e2f317ac57bf624ab416f0ff0d6cebc6ef60b3e57688134. 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/DEA621700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157d2e462b9c39c7d1e97a14cbd97953c884163f5ec2b2a0fc1a102288da6d51. 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/DEA621700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1529f9d4e1072e7853b4f7c11fbceffbf720b3b4b95270f6893fc1985d4976. 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/DEA621700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb3d28c4d0c5530b0ecc85c620e0033e387bf9839bef412917a47bc58b5ce9. 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/DEA621700188.
Per aspera ad astra (feat. Mohammed Ali Malik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85381ab6356d820c48985ee9cbf2624c0ad789d0ccd5d28418a9fe2860eb5b1c. 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/DEA621700189.