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 0x322e349755dd823034fe98a8b4bbf7adeb9088f1402253ea6f1d566ffa6dc770. 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/8bb9cee2-b43f-4d65-843e-1766c4397677.json and https://artists.proofprofile.net/proofs/artist/8bb9cee2-b43f-4d65-843e-1766c4397677.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 0xf73fd0bfe9e14de1275f11f816deee1bcc8eec1366f2a11aad0d29df699baa98. 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/USHM91424122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a03234ca1fc411690df7b8e4c7fe716f9256f86e4bfb86c65be7db5b0c12f. 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/USHM91424123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5ac3696eed93e95f34b9c24e41f9fdcb720436be554ae6dd2dd96918673786. 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/USHM91424124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1659648d74e4f5b5222cba882d24835de9d7c499f97cbaad809bfa68fee93. 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/USHM91424127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93189dca6624412ae74aeb24c1513ceffddac799f211fa28a2927d85796b3685. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM91424128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ebd814e0bdf63f6c44d3485ff72bf944c821aea09d817a9b8f94ff4d0a0209. 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/USHM91424129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108cb7dfb65a85212792ed7c0a88200e7222746088146e3cec097683ac771eb6. 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/USHM21101239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15184285beb67d9d4eaac90b4e100c9a50dffd021fd186c52a9c02d827faafaa. 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/USHM21101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b956703c7824b09b67ea79e60446bccc8b13241be25b9fd025263757addbd1c. 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/USHM21101241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f8b7b3ffda39ba1735153502a338951d1b3ed5f3aa3858183fb0e15cdd0dee. 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/USHM21101242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b47130e8cf94e4ae1f0765f7090e436d087f0e4bbfa0bf5b5007f0fd123fd57. 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/USHM21101243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c838c79f86782a88ded872c77dffb7de680dab36ba7b1c2842208e76e32769. 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/USHM21101244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9326a522794ff6bd6344257be29e06dd2900692723317131b340e72aa57d273a. 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/USHM21101246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9940220af8de314ae077cfae6b9a00bb95d551e51da3a0674c608bcdf2d16626. 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/USHM21101247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4406379aa9bbafe81b0faf9181eb4aea5a19530b098f7b171a9b1e9e4fe4461. 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/USHM21101248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ab900545911868ddd3db43955af315b83c1441a3e3941ee30a838d08cf04af. 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/USCGJ1139091.
Prison Cells (Within My Soul) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e8d4c81b4937ebc0ab848afb3686d92ecd1fc76c611b064f001552dbe4c2f9. 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/USCGH1407622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bd03284dc7b0e33d008e1c55e16855c9a9c5fa0ffd1ceec5af13088d4f82e8. 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/USCGH1407623.
Robin Hood (Prience of Thieves) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f498f82218e7562f21ef31aa35fe80b78e3d0c7a4ff9b6b3c87902ae29ba6c. 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/USCGH1407624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92a204c8b07ddeb3b56a7bef5aefc9ea9aed7e3f7b6b2218655669a1301d4de. 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/USCGH1407625.