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 0x9c690eed581a52aca874ba0f8bd1ef930b92e238ae6ddc72fbd27e8d85b298ff. 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/75bdddfa-7370-4e8d-8a50-2465fc5d5aa2.json and https://artists.proofprofile.net/proofs/artist/75bdddfa-7370-4e8d-8a50-2465fc5d5aa2.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 0xb0a7e25f1466ab04af904c853330d25438c354383baf6b7e02ced3999ff04a00. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/TCJPF1796743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7e25f1466ab04af904c853330d25438c354383baf6b7e02ced3999ff04a00. 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/TCJPF1796743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a724745c855036cd613ecd2cca69308063c03179012ed66a1fe6ac053271622. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPF1796752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31673674ddcf4bb49b7662462c266faedd748f38dd098d5d23e7e5288d9f9443. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/TCJPF1796758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa9df54facaf643b1a3a6f5b34f7be112da438a4dc08486688beedaa0eef7bb. 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/TCJPF1796738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31673674ddcf4bb49b7662462c266faedd748f38dd098d5d23e7e5288d9f9443. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCJPF1796758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8a682304210ed6b3458db5e85916302c9d28123478106fae9128719c6b535. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPH1895508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8a682304210ed6b3458db5e85916302c9d28123478106fae9128719c6b535. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPH1895508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0210198b13775bd832dd048b62a3c49775501760220e35bdd65db312c1820920. 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/JPU901803391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa875c1e3a7994c8dfc4864338dce938d185ede6053eeae1c5749d7ecdf411082. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JPU901803392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dce4968495b9faaf20e19de2acdc3cf86207f718b9fc8f301ab10e03450dd69. 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/JPU901804389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dce4968495b9faaf20e19de2acdc3cf86207f718b9fc8f301ab10e03450dd69. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPU901804389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72f098735d0b71aeec5aab97a28bf96d26b19b395cff5c7a7dc6ef89e98c179. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPU901804390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcce8295edf55d347fa518bb405de1d5b219acd62d5ae1eed17178ed062cad5. 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/JPU901902086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad405e1e477ec088ab2b6ba1d09c97b72653a6156a0cd96530a74a93f477b65. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:27Z), 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/JPU901903557.
Till the sound surrounds your loneliness (STUDIO LIVE version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cd83555fa56e799e3c9e4358fd18c0186b8cbc68d8acc8da47abe593a6a8f6. 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/JPU902003035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cd83555fa56e799e3c9e4358fd18c0186b8cbc68d8acc8da47abe593a6a8f6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:33:43Z), 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/JPU902003035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99421407f4ad3443e3bfb9fdc42a330c0ecabd1e772a53cce14a11a400844128. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPU902003038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e936883c69bb51d9652e3f1c94a96fddfde2663b14a0a27ab6e04194982c20. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPU902003040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbe81ddd38dfc52700a2e86228fbab79854e2fbf68a14abc8dc5d6ac250949a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPU902003041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2588e8296e6a97de62c3ba6bbd115cc5f22463177022ee7d88a6f0d9458fea9c. 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/JPU902105230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f90602ec3a28ac0159a20540de1f0a5f71ead7411c9cd2eb89d76117fb9cae. 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/TCJPU2336932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f90602ec3a28ac0159a20540de1f0a5f71ead7411c9cd2eb89d76117fb9cae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPU2336932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381d141e08a9801dab997f1bd57f9e9f44c5ce41508f55e56a73d1ad7a6ebff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPZ2463828.