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 0xbfe983ecad940510ed0fe91e5ccc9dc3e75f02746c6f3af925b85a5f87173baf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2901c575-d765-4dae-a2cc-20977a507b37.json and https://artists.proofprofile.net/proofs/artist/2901c575-d765-4dae-a2cc-20977a507b37.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 0xf038d56b3993141e023586a8a5c9c5ad35147a7fa28725cf7e780537c2309988. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBNL0502001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b45e42b2f23a7fbaf5fecee67913fea5ab78eea8cbc8f920fe1ca8863c06cd. 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/USBNL0502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c4770108c62d6261607e9b686059683d98b4968a0233a7cfcf8facf9c7ee7. 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/USBNL0502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce02d967172d1d44d71f6c0b99a7a1cac20755558eb37dabcbb6b1d5a6d4598. 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/USBNL0502005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169650ff57279303b8c1926e20338ad85f0dbb8c1cf881b7fcc8297ebf059ee. 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/USBNL0502007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da565b8e1dd1667f27613a5922699a9f11da235aaebc415b2d5ac3e103c9b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBNL0502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64849c5319146d548c536e7c4d5294f2983a5473e8dea8511ddfd6466f250f73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USBNL0502011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67ee2960af1e2efef14f44753e9da93cca67c75fa1f7b555d6ad9dfab8d093f. 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/USBNL0502014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25acef15d3a968384e3083fe6bef85281b1f3ab47e97287070cab2aad5ddfe14. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:40Z), 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/USDEI8203081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa749fd70ac20b06cbadf2967938e5fb3c87c3a3e98ac08404ff791e27aeb41. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDEI8203086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7db38d2e55ba3cdf48b79b04a2f7f3d7c4881155c9873beef2bdc29f894a7a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDEI8202217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4077487c5c7aed41514109ecd3b6addbe32c19cbce5be4fcf9cd727a0243596. 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/USASN1900237.
Red Necks, White Socks, And Blue Ribbon Beer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32af70fb621cfef1d9633f9ae46f9e86b9bddea3721d30e34d9e838cf51437. 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/QMBZ91332750.
She Burnt the Little Roadside Tavern Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b98ad29e920956eca429de9702bebca31c1e9278683ca0cd46b103ad7484ba. 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/QMBZ91332758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1173f3a64cd972a781089e5ff06bf8e65510cddb3b59c272e0ae6305b5a8cf5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDEI8202221.
Rednecks, White Socks And Blue Ribbon Beer (Rerecorded)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47bfca52567f116efc35c8d17b44690c5bc069c6bb191dc91262e6a2879b51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDEI8203082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960530e7d6b882e95397ab23a73ff53208c970a336244092695ecfa0a3479f72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USBNL0501009.