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 0xb94d92bc13c10510afb18dac09d6442e3fa76b9807b5c9d58fe3d2095d390621. 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/89c07043-8da6-4cea-880b-c6f5e24c2338.json and https://artists.proofprofile.net/proofs/artist/89c07043-8da6-4cea-880b-c6f5e24c2338.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 0xc46ad5383c11310780cddb52e04bf4edb0e5ddbb6ad2ff0f179ee1f43f81f862. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK55R1700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32819fa10840d34c8e93a29ef1c22c36d458c17d606392bdd8cd0ccee065c04. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/UK55R1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100ab586f384aab734fcea32960b619058ff357d37b4c1b40b01166c7b58be23. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRIDO2110341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cab28a6e2ee1442d4177220b810c67b4888fd1205dbba99cc53113d33e6a8c8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRIDO2110331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4350936bd29d1630e90262fc9a8cc14ae1d77b846962f0bb344acc61aea42ed. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRIDO2110338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f797714d090a20cf3a2c18b21956a2628e381260430d6650d9bd9c5d1c5a2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRIDO2110330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cab28a6e2ee1442d4177220b810c67b4888fd1205dbba99cc53113d33e6a8c8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRIDO2110331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f797714d090a20cf3a2c18b21956a2628e381260430d6650d9bd9c5d1c5a2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRIDO2110330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d9925be1339fc67c524b43732531c2989470f82a5f719c41bb9179a7316c18. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FRIDO2110339.
Molly / High Tide (Gerra & Stone Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1ff1bdd4ce46185cb70e30666c9c0dc043d3203a05c3011582f7a8b00d67b2. 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/GB6TC2211204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3f7fd3c58ea8a1e60a593bcce9d48a917cb56e7fd84df882dc15ba3ffb3f41. 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/GB5KW2102874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a1ed73bac3f9b98f0b807b9ac6ba95109453d75b3c078d8ec3965c4dfeca4. 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/GBXJH1000239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab790ea4dba2459687ccfc12d1fc05a111adc58485314b98f85400c211d9b27. 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/UKFTL1600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab6b4bcae7237ea1a5ead62d92ff92339d4c594313efd146eac5d40df38e57. 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/GB6TC1733002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854c69bab361f24db5d18575711c844d4fec1ec27158f2e86f08f6de952abd17. 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/GBPWR1600617.