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 0x34559bace97407c92de3b2395e1757cb7b34f283d084d42e13044ecfe5b10359. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15bf6641-a921-4bfe-9217-7edcb39e1c5f.json and https://artists.proofprofile.net/proofs/artist/15bf6641-a921-4bfe-9217-7edcb39e1c5f.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 0x4fa4c7daa7c27058eedeb99bd44537611a59eeca9a1d9edc6f56c8089b29ff37. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/HUA0Y1700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132bf6891b924247597da021f3426689433b339621338456518e7065441892fe. 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/HUA0Y1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f70c156656ff560595974f26c5896b0a8494a06bda6b6cfb0ade0502cb01e6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HUA0Y1700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bfa389384fdb51d92d7adf52638eab48d459dacdfc1d9bfb766ef8a3228a14. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HUA0Y1700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71099880fd40a2dbff3c81bd6ab37067cb507e94fa63b0c9cbd85abadda93327. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/HUA0Y1700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972be5a784299d47ed2e26bf70e9141320641d7134d25a1982e2975f8fc311a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/HUA0Y1700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766e3e912d75836a99dd2c800c9e11abda2dd39569dee433e9fe76736b88cd06. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HUA0Y1700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad76284f8e80723a8daf66b19bf52b2e0a5beb21f3dd81f9130444f29fc46a16. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/HUA0Y1700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf594fd022126003f01d847bdb23b3e1574bd9186ce31b5e3c6abcf5b99f4b3d. 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/HUA0Y1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a5d7c4591bf12d2b197b3ad4dad20cb7d085134669d8c5970fc4ff39e8abd. 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/HUA0Y1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a53626beb1bb0f0b65a49b40a55db0cca480d868528d61b59d38439bbbe52. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/HUA0Y1700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43049e3337d8ceae65194941807a46844e0e63e7ee9b9e1110b16276545e99e1. 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/HUA0Y1700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416b5d7d3b25677b8d4d95341745f4902fb40092f87df2f46d6fc2fa4f085ef9. 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/HUA0Y1700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8cce574303a78825f83b7d44efdb1ce80d4ab17da61e294e3c34517293fc7b. 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/HUA182449709.
Álomkészítők - Vigyor, Idill és Rém dala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb6743c751394d45c9e378a2cbec9571a5cd0e6e8f76b6b1d479afd171bdb46. 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/HUMAG1800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d9f6c9eac9626d0cc9454006a49650592078ad66f51c55f0090ab7f2e8d61. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/HUMAG1800269.
Jövünk, ne félj! - Vigyor, Idill és Rém dala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa146a48fbecf80a9171be108572078161d41db8391a90619f331aec592bbaa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUMAG1800272.
Hol rontottuk el? - Vigyor, Idill és Rém dal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c309148ca551b95a38fb3bd1aacb3f1704aaa162d74ee5bda7ff8e9085e84be. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/HUMAG1800274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24d5642977b55f239cfbdc45afc5cc2a2d86bd9f013b9fd3aee33e21c53b159. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUA0Y1800140.