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 0x9c532167b306e60dbf0fb594690a0bc79166345875325d27c89307f5ae26f4d6. 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/2b08e4c9-f5fd-47e0-a631-7f1fff5d4990.json and https://artists.proofprofile.net/proofs/artist/2b08e4c9-f5fd-47e0-a631-7f1fff5d4990.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 0xb92539cfe0c6a422c056d9316ddb4f4d79d88031c0b61070f379e3f2df682e58. 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/QZQAY2457843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42717946cb17a590a2ad4ca44bb518058cc44c7d289f83264a5643b7673f0ef6. 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/QZQAY2404185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b0d0f7015b0576d41ff044028413d20c28b07aa024d008593909f1a3b40680. 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/QZQAY2453386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7cc6a7abb956e6c40794a01318c307b5f88c07b74a12c4ef30b3405734c701. 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/QZQAY2457639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2cedccb8ff71e014fcd6a6b5bc8faa0cb3720be35b507c87f38850664a82c. 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/QZQAY2449411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf491e0f7e5e03423ac46de132dad520aec0372c79b66252bc0bc8317a3a51e65. 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/QZQAY2411746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a3567250a9845d55e63cf158939cb5269b6b375a2261121e4c1b544e987347. 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/QZQAY2467323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcff6f7514b2ac887549f9640cb2f60bd4b5e5ac8a502b4caa1139ff77642a6e. 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/QZQAY2481549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c93a180fee2d155c19b36cc6baf390fbb71a25413d8f738839db6399d84e700. 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/QZQAY2481870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544f84d88fd3c41531436704547f1a7f1c5db0de2e88603799e5d2fe37a294ca. 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/QZQAY2450193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6120ca51799ce6ceefdd3c07d9d755ac8412909ff4608039b0623af7618e5b9c. 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/QZQAY2493140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2072b7c9dc9b62342120b7b1f5c771ac3671a024a50cf7c08c445c2aded7f4dd. 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/QZQAY2420906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b6fee1757f4bf441e5b9ce10335400d24193de292f51b0bbb7dd331721738. 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/QZQAY2429145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f9498494d4261128bc2668a68d4aa92e59b65f641e3d3e79fd059809d95ec3. 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/QZQAY2420464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8bdd419b43578e8c231be0b045156e49f5160c757e77a41d990fc6166c57fe. 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/QZQAY2438077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe50715fd2bd16079f598376105adf7fec9f244f828421a8bea27fa84df7ab3f. 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/QZS7J2423920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7de70c981ff320730f2d2a04903e715c747b6d93dd79cfdca192fe41e73a34. 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/QZS7J2468630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1182c0899ec929810fff7add36e98567e7b5f84f360ac03713398c48004d2b. 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/QZS7J2415526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a18936b38ec6417f73189d6fdbce6db1d7aa3b8941782f5e7332d3bbafb9ce. 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/QZS7J2426722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff21db7c32273c9ccfe03778768909986ddca1f4be3db88e2fc4dc3cecfb1a. 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/QZS7J2428122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8785c58bcb536aec9216e26806509ebea875b992b9cb951d7dcdc90e6803b3. 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/QZS7J2451967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034d1288eaea80fabc47963e93fda410b7895d023622c36ab64f7947e57bf56. 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/QZS7J2425022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5370f098dc02b5f71ca9c76db33c90feecb15aed27143843d0bbf0ef32400. 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/QZS7J2407326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0266b0965370d263a06f09cfc726fce382939427d6a74a97e9c62cc35e941. 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/QZS7J2407618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39470a95efc0673f6b2edc51cd2533b45858286c2000ce2ae8f4f650b16e0a9a. 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/QZS7J2494292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0632ebb2fe87993cab5f3c2b385f5be4e6719862d5ccebf3a7cee5f13af9986e. 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/QZS7J2407311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63ab3943691422cbbcfde73e3f497dd3c4a0ce33866e877767c792a8a86f21. 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/QZS7J2454857.
Whispers of the Clouds - with water sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3167b755fe9487acbdacd3f262e8c5cc0eece04740a8c214fe0067b0306959b. 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/QZS7J2442201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409e4ab137850be164db2a39d0e4d93c642141bb38daa3de54bfbf3f9ba9d328. 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/QZS7J2496662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c91e62527693fc0812fd2e88bd7d826566ed937db151bed5730fbb507252fb5. 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/QZS7J2447650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad05af088544f41e699a383e297813cc2ffabdb6b0477c9b1b8069d3c6adf7a. 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/QZQAY2428875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ce1da7c34a4572e810145fa3d13dcf7dcfc493db8628e1d20cdbedb16a3285. 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/QZQAY2440740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12392e883d4317f760b9c85ba4410c16afa5ef237caa2361a1a5e6158e6f4441. 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/QZQAY2495551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba579e966432873031a483bccebf7adac2fad9e8f6da6a720a393722db9d9f7. 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/QZQAY2424029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b59ad96e93ccc2d8906821178baad4b77d39aa6e1bac0321843cf32eae01c. 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/QZQAY2433207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b521e12cc66d9b953f3a97774e411fe532b7eedfbc18b67e30f02c3ebe7bf8f. 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/QZQAY2477621.