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 0x83504bbcb7859e89d9534f3a0031de859463e71e265d19e5a6487eaaaaf2606f. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d48b15c-ab64-4c2c-8131-f48051da5524.json and https://artists.proofprofile.net/proofs/artist/0d48b15c-ab64-4c2c-8131-f48051da5524.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 0x6b884cd6855cf2770b3c1c2d813b5573f49163b24c271d6de2cbd3a632dfab53. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE3DA1801801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a3b3a146d0df7a359fb1dcf4bb0124595ff84cd3d151b49bdc307cc6b293f. 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/SE3DA1801802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d44f5b763b69d2869d3c6c98b5ccd3f64e7e12d07d7eaf296ac0a1195bf62. 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/SE3DA1801803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50233f5ee333b9244001dfddc7efded141350d6dc6f20be5725c2d00d9ec3cc4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SE3DA1801804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639afeee474077b0870530bb92afd4a35c3d83d8bd1322e6b8a3d9ab046d09cc. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SE3DA1800601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0329239b552ad972f7341d78a7c1dac0566f38030b799249944b53661fb8beb4. 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/SE3DA1801805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e4dded261dca91e74dafcebe0501cc810ab07e4035a9a22ab6e4fe515413cb. 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/SE3DA1700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f96a0e90209486047f9479265864007518d0b24caa12e0ab6739f14abe04e7b. 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/SE3DA1801401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2244a1ea88e492433bf1521c94f45e397369fe5fe2dce15141695211100e94bb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE3DA1801806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07e401f1b770b60a79ffea36a5c1db21b9496b50165dc2113db2295069c89df. 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/SE3DA1801807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838a6758d382f5ea30690356164491f120e376f8b88f705f4c4dd0ab519ad904. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SE3DA1803101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14f11167e180e8f9ffc998c033786bda918fa2a887c4e76b2a392d60bfae503. 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/SE3DA1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc59d2113b5318d3feac385f5093e16ce07ac7b033f3b4a9d17af8557c8557. 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/NOAPI1693415.
Putin, Not Even Jesus Would Forgive You!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88a3db4d4a1a2093c88059bbe11df8b5223f774a297565ab762ab4809ca16cd. 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/SE3DA2203201.
Putin Will Teach You How to Love the Motherland
Putin Will Teach You How To Love The Motherland
The Pillisnorks & The Free Voices of Indie Sweden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ce09035817516b0f251c224be6423a8395ca45609a0217515dac4cdac1c3d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE3DA1901701.