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 0xb59dd92e5b671411abf9f9201991aef9ceba5793f0ccdb721b26f128b6e07e46. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78ee8d3b-dd92-4aaf-a145-a0b18553fca1.json and https://artists.proofprofile.net/proofs/artist/78ee8d3b-dd92-4aaf-a145-a0b18553fca1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12112c53afe7750a55da98ba9890f0202699f3cc5f6c5b44ebf0f64915517f03. 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/NLF712401023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da24082846c70ec551340fba3afe2ca82d954fd5089202bd72a6d8c4fe64d08. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF712401150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e1f97c12ac33b5684207eb981d000c5e329ee953f55082a5a992897052eee0. 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/NLF712306905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9912b4026162b193cda53819cdbad6ba13120b5013fec9e0abf7b9bc2aebe4e. 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/NLF712305201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc306507f537f35f6f1243f8460d262fa08518f39e9b04d4eecdaee3a7964e66. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF712303810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1f03159923c89d189d67676eb4115a2aec89a8fab6440a845a47d71b99732. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF712302656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9f731154829579b357270996e8fe025fb0f3621c88da41a7303a8291adfba0. 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/NLF712301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219c866047f08c6581a6f31cd421d4b39c7951b7619cd436344b0c664bf1dd9c. 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/NLF712300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd109924f2eb59b4adbce5c2ba05e8768aa6cc7a1ec37d7432f508ac83feaae10. 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/NLF712300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1f03159923c89d189d67676eb4115a2aec89a8fab6440a845a47d71b99732. 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/NLF712302656.
Chill Executive Officer (CEO), Vol. 30 [Selected by Maykel Piron]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fb39dfc771fb1354746581468da0c16a9b9eeb341bf67de0ad1f9d6a3af5a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2310465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9ad4a6b6e69813d1299f7b65e700165f2f643c52ede47629beeb37a9ece2b. 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/US83Z2308186.
Estrela Do Mar - Turu Anasi Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf302a718ec524c1ced8d2696e2f794fe86b5614e29cd8ce45beae77aa91c5d73. 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/US83Z2304354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ced8c7c3dd2f4ff121a639573dc8fa72579a894e7125a90420744b882764ed9. 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/US83Z2310234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15e4bb829379d780f23e89840043f3f6a75147c2c5d794d8e90f4cb54b6762. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2300564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10bfe9f400f6c6ade2f872d1e167caa7a455d444be05c22288e0d4cd2b543d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF712400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56073ed4b435a9ce80b09d5887b41613511728cc6527ddcb0ca414295dfff43d. 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/FR96X1958054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1625df8e06d5563a759a77e0e2b168428b6845f475c23311953ca35a0be10e45. 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/NLF712400971.
Chill Executive Officer (CEO), Vol. 28 [Selected by Maykel Piron]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15e4bb829379d780f23e89840043f3f6a75147c2c5d794d8e90f4cb54b6762. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2300564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f1d22b0b001ae5783aa44c1f14bc9fd4702137a2c97589b4e2fb67c86f696. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e0e7d1875c95007fa514fac7b63414022f3fd6476796f5b2c6061b22b64c32. 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/US83Z2300566.