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 0x940bf687426916624f94dae92cf750572abb9f8f13e7ab567f0ee860a9cd44e9. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7938850-f705-4c93-8d12-1245adb50fcd.json and https://artists.proofprofile.net/proofs/artist/c7938850-f705-4c93-8d12-1245adb50fcd.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 0xd5c8ed18c01645c130122d42336f7ed94f038432d65ca165c9bed0b8a248ddc6. 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/ARHXW2302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a229dd6ae7f9e264eb363699025a7f1afd8a33247e96d3108ab6a4bd9e39f6e. 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/ARHXW2302180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb43531334090d768c238c8415d23e4d53e8db7e2c767684d827d98f98cd7be. 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/ARHXW2302178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f484536c0425dcd4701df43b6e8196a16f242cff7acf7989dda1d5ab4a7a4c. 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/ARHXW2302181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278f6ac9728c81d7c0cb0e0e5895e54df2f4bf234a9a5cdbb9bb2ea4b767c192. 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/ARHXW2302184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16de6b4c465e2c153e5b6ffd0c4094e74cc43874de80e3f9a5278c558e7361a0. 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/ARHXW2302185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3660734e6b3a83415ad5a31cea35206e033d229e56c6f6a9aeb1e40a45c16a8. 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/ARHXW2302187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07a9efba5ed65e137401e8352740a5ee409e73621b79185da1adaa615f55d98. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ARHXW2302182.
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 0x353ff503dcb68ac788f314fb0e878a781a832e1d5ccaed1fcfa6933a2a11b1d9. 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/ARHXW2302183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f42d84573df606991a0af4947e007151d5c2d3fb2c5c5885c2c468319508320. 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/ARHXW2302186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ed5820ab78eebde323d678789d539530939b01ca99206d92c48e946193bf93. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/CZNJX2288207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa699026cfadf3d8dbb8a1b14b61e70ddca7c4c236504d4205f91ff625531c5a. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ARHXW2302189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11e0cc5a79936d0ae9d1c029703d8031c0be3a6e36e73d21f80aee4ce67b023. 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/QMBZ92331935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15300de8cbc4dad656d3283cfee4b99a798f933f7243e21713c386003b12e65b. 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/QMBZ92331939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135bee086213b24e4b84bb7cb574375f9f8316c99ca0fa6c1bd2de547483a276. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM7282370047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d42790fdfcdb61ae5bd178c2f423f5e3be84a9607e72c4cc83634c85b9a38. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QM7282340870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0846dbc700416db5443a23beddacdb96935e06dfad31ef77a21171b5993b34a3. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMBZ92331937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2933e1fa3e974f1258d1c5a33e01904ce3562cb788713b902ebc99c18ebf41ea. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QMBZ92331938.
¿Cuál Sería la Peor Pesadilla para una Sirena?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07d1e7d88162b58148b17d5e6ac818df411e2a84c6708483f071b94ca32d360. 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/QZHZ62112537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9aef2d0186dc173f8315b8a1bb544fa838450a509c34033f564bac516e7b2. 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/QZHZ62112540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635e0c625b456b0126af7774f782f4fa1dddf692a6ace1b75e038881dd47c737. 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/QZHZ62112543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6df099631bd2be98dcaf7bf5761a7b13988eed555b87b675ee53175fa807fc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZHZ62112538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83629de100e5542f8df3f3a227a6c565ca683e80f464874e20f58c9e88e0921. 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/QZHZ62112539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612110ea94ae91c055197fb29e04e62d0ccec754e8a587409f4f24f1d4d1dcb2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZHZ62112541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c692356cb064f86f8ac96e4bd273377ae9365d685ab314f760d67e6b98152d. 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/QZHZ62112542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8f5dbaee7e3d779d5af5db51baaf28c0ea458bd412188d8bdd9085e8291749. 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/ARHXW2400185.
Plateado sobre plateado (huellas en el mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f090e95f83df9836a1f4dd66e6882ecedd7db9b1dd6ade6a541575c1b28925. 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/QZHZ52033161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc8fbc3dae2b6f39ff6a7482680d5f0612d3df30a964d4350aa7e08074bd21d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHZ52033162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef99c23dd082b8e4818ad7ad8bcb079744f32fc1f9b220cdaeb1f11f84f37279. 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/GBLFP2385651.