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 0xf2fc981d66ee9f600dcd9b0a8ac5843510d656fd6bbccaff25512723976c5f54. 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/b222008f-eec6-4cea-b1fb-0ce428e5ba46.json and https://artists.proofprofile.net/proofs/artist/b222008f-eec6-4cea-b1fb-0ce428e5ba46.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 0xd97e1fdccc737cd69451859a6c4f471feb82407e3744f5744bd73309e8d4a701. 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/GBUM72103552.
Fidelity Radio Club (Toy Tonics Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c20448fe26149a08e0799d62e9736e41e2dd52f1622980cbd8a34614a8781d. 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/DESY21401300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1500e0139b6e16de7af10f743a0342b26587636d956b2b22c60e1da9156d7a4. 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/DESY21401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d6e60ddc06ac7043fa34d6084f86658af285047085d40cbaf9e50e3cbd010d. 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/DESY21401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51961f5d607a541883f925e8530bb58ca6ad43e37e474a882ab27e68bd717d. 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/GBHFW1800102.
Where I Wait (feat. Dave Gahan) - [The Hacker Remix] [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfc266933e28d66e32de96bf3495796c876507a3d79e666b49651dd47923388. 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/GBHFW1800127.
How Sweet Is Your Love (Sam Ruffillo & Kapote Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443cbe4383ce624996b99495044ed8d5bb9b160d350f9810f17cc2cb53ebe87d. 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/DEBY41200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a2543c09259a8ef529f4b1e88a043fbd0cf786bb2a3f10c406131a90fb595d. 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/DEBY41200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacec860c669d1c9a3f8b275ae2d9eccadf8deb22cb0fe202ed7008b4c4add4f9. 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/DEBY41200839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe06effcb39a3c59fd0418d54b11b34ae8d91cbbe00f567a0f2c5d1b381aeb6. 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/DEBY41200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc6b3c36685a1f2ce0a876c1955aad5d64719f705df6ce4595b264742eb256. 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/DEBY41200698.
Cash - Sam Ruffillo & Kapote Remix Hot Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c307bbd371e2d5abf612ea724fbcff0e497379eae6459191c1986ae91f3fe. 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/DEBY41200782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2c287b55ee12790cf72070781ddafefccf594a0f4e0f5d654a6ae18598b06. 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/DEBY41200680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89564b9d57b8c81cd34a6c1992625a74f8190da4ba136517640bdfa8d7cdfa. 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/DEBY41200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa9f45bde5054eeb6128e7e6066277be0c0c2ddf2c0ce811a5e3b4fa103fca2. 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/DEBY41200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33813864d53770525b4bea9adcac93ed8b7be1fe92f8bf8fb4788bd34215c3f. 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/DEBY41200890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7131298a102b4c86a3de7c152415bbf36fa5add1488da5bd61e8fbd07d6e67. 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/DEBY41200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f05075083b6e3e7669a0d8a7d496a070a8a2715df1da8b9aefd04245fb15099. 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/DEBY41200887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757090c674b630649ae2f9314d2ba044342241fe87c04aba5eef29ddadc323e6. 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/DEBY41200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703322be2ba5f7252af3a63b559ba4ada405579c8f91e57bd420dc4c6e2a4522. 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/DEBY41200641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3baf221dffea26c3006e146059eb82b560f530250eab40f329d4dca066eef5. 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/DEBY41200565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5047ed1078cb6bbaed49532d402015b8947bbbb7565b9a0144757d4b74ca35. 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/DEBY41200432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f324fcb49e734fe57a776e11b8b3ac458bfd60487bd7f643300ad22b19ca3bc. 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/DEBY41200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab2b3feeacba213f710a6ab5aa8f5e7100deb2265b2560e228ddc0833b0281. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBY41200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac72de71d5a96bb4926a16386784248c651a773ead567e6cbc57de2f25a22725. 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/DEBY41200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36327336c7337ef64ab68c9982360e3243517197b4fd4e10f3fa241be45385a7. 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/DEBY41200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8facab74b3f6326946d0bc6251d876fbabf87af836805dff1ee67371dd26aa12. 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/DEBY41200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e21a59d4cfeacb7e3e698e994be8646a5e8a3d56cce6ae74665f87f880b573. 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/DEBY41200291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7466660c3e0deb2563521dbb192074cd464d30c2b530b45d677e8a1c380570. 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/DEBY41200410.