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 0x89c047d27b7e97256b9c988ee201db8447c258c26f7d33c17571a3b16a274afc. 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/2bf3b3dc-f05a-4083-98b7-116e1de2abe5.json and https://artists.proofprofile.net/proofs/artist/2bf3b3dc-f05a-4083-98b7-116e1de2abe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Good Times Bad Times - Document One Remix
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 0xd34943d96f8d97206419b7aeeda7661410baf570e1a3d70fee98f4b29784c75f. 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/GB5KW1703902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee2dce1b8b673d52073039e7f13b3804db60a1f6191c10988fc72171ffc761. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US38Y2310368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57475c441ed51591a55fe2269ce3bf8cac4a06e34e27dd9a7a4e63d41ac89b5. 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/NLCK42227380.
Reckless & Relentless - Document One Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64adccfab66ac8d8bc946964cf5fbd7c8b94bb8027f157d1e46de89fa04be59. 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/USYFZ1104703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd19c4cfc6dfde239f2a5de9e4f4c26322b025f61683f6235a7748fa706ba5. 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/GBPWR2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb132f1cfb3a923e43ab66a189dc296a2d14ddc294bccedbe72531d69cc465. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBPWR2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713edaa317256ebccfb73b38c9b7f78e218031abccea028bf8aabd1584fce847. 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/GBPWR2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb634e92685bc57c53ab2ea9ef1c3075969178f18b58f26feaa1b5a115314ae8. 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/GBPWR2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb634e92685bc57c53ab2ea9ef1c3075969178f18b58f26feaa1b5a115314ae8. 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/GBPWR2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713edaa317256ebccfb73b38c9b7f78e218031abccea028bf8aabd1584fce847. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBPWR2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb132f1cfb3a923e43ab66a189dc296a2d14ddc294bccedbe72531d69cc465. 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/GBPWR2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e6ddfcad37e7ede58120d498324658c5cdbd7ecbb528976b37b8bc801fa81. 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/GBPWR2300003.
Heavy Artillery (SkisM Remix) / Reploid (Document One Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9c795c043a5cdc8805694f6ea384a0286b804e3106c378b03e2bc9c39b92d7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBSVH1199812.
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 0x8446a5a2eb6ac34e08d3d5503f5d6125f5e03bddc00e946d693d1c6aa98084f6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBPWR2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0ba93c710f2c3dee3dbd5b282cdde00266c2398a065650359f91e527bd9d9. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBMFG1600657.