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 0xd53bd9eae2465fcb198ad85c6c1eec6bd5e6d399fb61b7f45e2909af332f7fa7. 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/fecdb850-73b9-4e6b-8334-2bf5326aa0cb.json and https://artists.proofprofile.net/proofs/artist/fecdb850-73b9-4e6b-8334-2bf5326aa0cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You're Not Alone (Hans Christian Jochimsen Presents Opstand Gospel Choir)
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 0xaaf0e4e56b098c23247dc8113b38ea3e1b1a695b571385199475b4c7a310303d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DKEUA0100604.
Deeper Than (Hans Christian Jochimsen Presents Opstand Gospel Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1144b1baf2633f9a9adc7b61a8f261e2299cb97deb0140a5eb47b73e17544c4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DKFD51562001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc3c2c468ec6a9c7b0cf0b4740c13c184f1968740bf53fa47cf3f087c56ba40. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DKFD51562005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7ec97c6ebc98c252d2bff21f4b594806051acedf84c515e8702c5fa9fc5f77. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DKFD51562011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fa72cf174f8d6a5ce038aa4981bc5cab8a06816b1098851534938127aeb5be. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DKGZ30900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7aabb5cd6b8d8f0dbf975fb34ecd4a91f822ee42ea82b3f7aa9d4e7245b47e. 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/DKGZ31100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b341d43fa1c25ae1e4084dd0fc823d6e84ee456b293a48d8ec0bd9b727e6fb9. 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/DKGZ31100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c069398eada99f2fdd7ea6af6f62d9b9523aee2806b0001bf8f62fcc757a090. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DKGZ31100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7befcd76dc3071061c52606d0c9ae92ec396b98b63ac83e32559d3f62edb6654. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DKGZ31400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a4f5dd74a48088fee279567a78f10f60910cde8e5df36c6916a843673445f1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DKGZ31400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f26406ac501ad898b092eb17b3e2078f66bbdd213fa6d2a9366d032db6c9c7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6MZ2407182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28abc4532d2f044b3ed7c535f64dfa373c723f5fea7d66de69d2a0fb6508f6c. 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/QM6N22440690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517323bf467f65fd184e367214a515f74111b36348738aff9ce65bec5deda677. 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/QM7282559511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ac6845b4269db83b0fdf4fc597c692e0fa7ef58554495d2fd93616e5df20b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QM6MZ2497357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28abc4532d2f044b3ed7c535f64dfa373c723f5fea7d66de69d2a0fb6508f6c. 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/QM6N22440690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80c8f856e317a456cf383a2d7c141a087cd7a568571b0f66e7f9da9d5613c9f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMBZ92565488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b1192a60b52ddeeb2727c4f4f1b3b8191fbb2ab6f8121b59169268ab817f6. 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/QMBZ92565865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8a3a53c45d95413ab1e34cc49ccbb73a3745ec0f48a233d78edaae5d2f5a90. 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/QMDA62562459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5cf989762743775e72cd3c305304f0e29b9492f08bc026a2a5e0df6e071b1d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QMDA62520440.