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 0xf79bb76c0555d5bbafee12bc8437425c6a5ce36a9072e0bf6ac828c3695014e7. 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/e5d04548-9f75-4dfa-a33a-ba6dc0adebeb.json and https://artists.proofprofile.net/proofs/artist/e5d04548-9f75-4dfa-a33a-ba6dc0adebeb.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 0xf11f2369a57d43838cf230e0d00e657132b76684f7d06a83fc43288da76549e8. 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/QZTB62304930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456dd7f1c78f2c7bc5305236621d5b1335f675ba66b8078693d311ed67fb0c3. 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/SE6I32476825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6747968755ec97d7a2bb665a7fb0118e65f46008fa92b5fceb34456ac3ee64d. 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/SE62M2338288.
SKITER I DIN DALAHÄST - LNDBRG x Svardh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653427c6dd967a7bdbc1fef620f9e747a2be23cf9777a570401e038c331353f9. 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/SE66N2311603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3050a67cb4c3657bda62cc8e7938c725d67f967e26b6391a3fa2cf58859e4. 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/SE6XX2322205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11f2369a57d43838cf230e0d00e657132b76684f7d06a83fc43288da76549e8. 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/QZTB62304930.
SKITER I DIN DALAHÄST - Greta Tuborg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3176cff99ac21302d5a487be6465af96cd0806a209402f075f9a66616d68841d. 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/QZTAU2315071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e3e2aa180f6552ce4ff2e43ecca35d7c3aae2a1401357207ca91885cd115c3. 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/QZWFJ2336409.
SKITER I DIN DALAHÄST (Greta Tuborg Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2b25456ef65c7228410cf62f975d8f3b319b88cd189397f7ab5589d996b3bd. 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/SE5BU2499531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db70d635d9a204d748b7486178a3168dfd1b4c8e4a650b0d4abece868dde77. 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/SE5752451459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8722d28dba56ca0083ca0a372d90274363e1aa68a58ea724762c47761e77c84e. 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/QM6N22407858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0754ec130f86397d90389fc043bb8413390bc02e49117586cc6075d821ff5968. 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/SE5752436166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ab230867b93becf0d01d713b67a924ab068786e0059d3f114285091eb77f6a. 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/SE5752423971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2738aceb5446dcb53e322a930a3015abea7df0879550ff965fe221ecee8d64a. 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/SE5752412515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa052defeaee48c99693b6330810e766a001b3c182cdce58f5070a130017b2378. 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/SE5BU2483609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa069ffa6a4ae497ac2a6f5abb9f199d5cb33baf6b7e313a6a97793acef196796. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5BU2468817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e219fd4a2adfe4289bf83e69114ccc4f068c1774f43ae28ac7e1364991c9e8. 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/SE5BU2454737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d702fd89d1b6f7d290df99ace12af69e5290bff5fb717f812b8863c2cbece75. 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/SE5BU2438823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b6b2ec294add15d9f5f2f28cf155fbebef2c20839782182120c44fea3dc1bd. 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/SE5BU2421363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2759f1800e05387eb66cf8ff63669007ebf3663f4152f8237c30b753a3f608. 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/SE5BU2403674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c182af89ed94a913712d60f3e930818c9adff7ce02772444a4f5ca6afdf4b7. 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/SE6QE2409740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4583cba626652d2bbec26d87d0e091db330f7f24b169db502852484c27f9a. 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/SE6I32495461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe150c5d725957ec291f0a91cf29b02683f44965c4037dd389e8e88397fcf50bc. 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/QZFZ22439807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469b3c44796e173a68464e1269d9347295b2da77a4d65e7638a4d1d1381fcb4. 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/QZTBD2303778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c366cc451a720bae51f291b01d379906ed1904e12ed4e8dc393504e4549805. 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/SE6XW2399895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c51b60bde2a28293c495ec61f54b918f4e02300cb082a4d4ce24c9f2eef83c. 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/SE6QE2379226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845b5615e74fa70d9198bf66d905ca42e1baa7a00ef83d9194694f04ca516322. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6P2369556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b377cb10277bb4bac6fbbb11748cf9493c3b5919bf7316780fb47b52de8e60. 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/SE6I32386045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bffb2539fd566bada048a8298f67ae7b55fa24679c207597e883dd5c1260967. 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/SE6I32359325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1501a56ba82845ed1b5f861c07cfbd91fbd35e1b5f10be46dd2c82e7ebc17eb. 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/SE6I32325494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3b138fdaf7f9d00589ff585dd2f3633a392913133acd012e662d72c17f5821. 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/GX3Q92354147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40496a8539f74ebea1101a33d42c89d58a61c865d3f76da7ce05ddfe34a1f9f2. 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/SE6HN2433465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb34bebf355d91bbe48c5b1a10f9e6d4593670502a928b6438b2ccb65d07d07. 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/SE6HN2468449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218a5ac79a6b3790e61b4223ed77da179d1e442e9cc22ff155e6ef42c63806f7. 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/QZNWW2470798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f84ee3ff6cc4361c464151cded9f5402728af805fca967eee4b0c68c3c091b1. 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/QZRP42571157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373eee183aec9a81f3b86bbec69130e3b8990d6f32b12c532c4c30e1fdde959a. 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/QZRP42571158.