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 0x5da520a71d1113fa0aa9ef452c5125b2b27fe4af662ad6e9dc28b5938765f9bd. 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/ee93146f-f6de-4479-b218-6603e8d94124.json and https://artists.proofprofile.net/proofs/artist/ee93146f-f6de-4479-b218-6603e8d94124.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 0xc39191b5acce5ed550c02ff24c15e8d7ff063b03a2d5065b9e54958c8132bdc5. 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/UKB4W1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72baef821ddde3bd14c71bd242b7e65c718403ed943c8bff80e904bca51108b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKB4W1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80556e1ea4b9098c6e07b120684dd66ba73dce8c8a5e9de46569832ed22d0f35. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GBLFP1727425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5605782cf616216851525142e72855d199b5479d459ba64d8e3d80592519b6. 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/GBLFP1727426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24704cad8de0976f8bc86bda404120b43280ddbc02de17409fe293c67d54a91b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBLFP1727429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0907fb69e3feae8d88614d274dd0cce976cb3e6d676c2e16aa65098640da9cd3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP1727419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd9a4a55f4e960ec844ef9684d0fa65a33c924b189b03803501ece4084cfdd4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLFP1727418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78360552109c44ad28ffbdcf2fcf6be018b9e5afe274f55d60e024f6b1c533f2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLR8C1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d58516007647ba2ac6ae06f61bb2f6a5b4a6895c4c05f421133fb959a43185. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP1986829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37252abb25506dc1b3343b20cb1890c413989221c12870ac22ebabfbd1bb66ec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLR8C1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a4cb4bd461c2bd1423fa1eacce684ff5d503be7e787aaf700e04c7fc3909a4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAFP2155335.
Thoughts That Keep You Awake (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce0f3bc3916699cfe5cf2b9a3442c87cda6e34d427881b69dfbfd04b2110ab4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEA452400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28511ffcebe6a8b4a5d5307abb9a4a3db004e33515ad58ec5fc25269d60e30a1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEA452400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929c4ffa9e3b45e61b55891ce1cdff509ee05e106ec31bf6a6ed80f903af1ade. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEA452400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25cee0cc7a69cf150ee992d06fa4863e6b77cfeb08f2ae2bb3d6176ac9c1765. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEA452400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce0f3bc3916699cfe5cf2b9a3442c87cda6e34d427881b69dfbfd04b2110ab4. 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/DEA452400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa512c7bdd4e55dff8e5be6be035e55d83cbbde576c7f7530edd4a701fc98dbce. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEA452400090.