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 0xe38c59b879fba846231973a7438e86e71dee5ee42bc48503f2c02f849927e4a3. 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/abfb804a-d0b8-477d-9202-6eb1819209c7.json and https://artists.proofprofile.net/proofs/artist/abfb804a-d0b8-477d-9202-6eb1819209c7.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 0xba719732b1ad1936cc7a4ef2e209b0f9ffdd1ec428a5d8a0642f0f1d07044cce. 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/GBPWR2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dedbd40015fbf1f4a78e2dd00570e1540e224380b314938851e4d795676c19. 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/GBVPL2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4832712f9e92d18ac880f02622102fec56c14d4f5a6a49da8bd96ae237ef24. 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/GB2LD2410000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d672e7590679cdc1f7bd92ffefcb0f4ae16af7f8a22bf9f7ee0367a1251e8df. 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/GBCJY2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f92d85df9ecefc2a5eb330e80fa6bf028ad1661ffaed22d6c79927c6e90f5. 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/GBMFG1500524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029883709da6d62e1a5076ee3ae1fae9fc707b36fa98c2797f60503ae8b50f18. 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/GBCJY2200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee34904216e1594cc633b310c866e0b143c9deec976b0bed49bc9673c2afdbb. 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/UKE3K1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dedbd40015fbf1f4a78e2dd00570e1540e224380b314938851e4d795676c19. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBVPL2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4bbaaafd0058d2cdfd8e72710e4befbec9fa41da968255cafbf4e34d2a8ac. 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/GBCJY2300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2073ffd2199e5f97d717d6401155b83034f04491d3e01dab4570d7032c0f7ee9. 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/GBPWR2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2073ffd2199e5f97d717d6401155b83034f04491d3e01dab4570d7032c0f7ee9. 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/GBPWR2100065.
Oblivion - Drumsound & Bassline Smith Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2ee1015fc0103702187476affafaefbb2aff84147131eb6163dc20b0f2d42. 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/GBMFG1800895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d5561b69d448faa5b3f4c48907fd2c625bedc447437608684672821f5aed4. 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/GBPWR1600683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d5561b69d448faa5b3f4c48907fd2c625bedc447437608684672821f5aed4. 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/GBPWR1600683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b6cb23f1bdfe96ed66f1aff4d881fa2cbe074cb8f61113cd5d6e2b39999cf. 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/GBCJY2400564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d34d8d4ec9ade8303d46f0adc1d53cbe93d98f7b1c115dcbfadace9cf65d38. 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/GB6TC2311301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6768f035a68552c619bb5c77f2db479e27aca99cf4849811f1d832d1d269b96. 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/GBPWR2400098.