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 0xbeea86d8c7b91da823405f2e8416cb77e116b0a7f22c6fdff4a59fbbe3bcb875. 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/a85374f1-6fcf-4dc3-8a1b-1e8efa19a3a3.json and https://artists.proofprofile.net/proofs/artist/a85374f1-6fcf-4dc3-8a1b-1e8efa19a3a3.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 0x34689676d64741ba8d17f2fa825beb229f34d41f5cc242af7baa82b2ca589d2e. 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/QZWFQ2395540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66c89d37fbe9e434c4246d02946b96cb94ae1d9bd4bcf0e7417e64c845247d. 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/QZWFQ2395541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec04f5fe4e37737e75fc56589487c5db9bbb8698c0e8130f101bd8d970fa999a. 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/QZWFQ2395542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1aa443c9f8a2b56d8513fb3d3d0a522cca9f84a433580459d397824e3c760a. 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/QZWFQ2395543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea586fdb1527d705e2fe33e55332709fe3440abd4203830edac0c3b589d5b674. 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/QZWFQ2395544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46608e14effff1c04874f2a52b9b00dd55ec3578f450facbb64b73917ee14939. 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/QZWFQ2395545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b8a2f733d89a069c41bfa5b5377309f7c3d20ee6a3d3ba78be6f11dbfd5aee. 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/QZWFQ2395546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9022d3c014336d190a886dfe4cfe52ad4706d3e20e217fcb562cc437b6fd99ae. 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/QZWFQ2395547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bce4fa3d16b07e07504e9eb480a708e9be8adfccad04b556f1048157fc1af0d. 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/QZWFQ2395548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1425f5be11d19946f758e00ca2609d41b499a0fc613121d453779c67800e17d. 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/QZWFQ2395549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a44dabd53f58ca139955e32a92507d6b596dbb9ee9966b130d5ba4b0830052. 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/QZWFQ2395550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48452d1c615219cab014c0b7c37e403a348536e6c01701124ef5852b3e142498. 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/QZWFQ2395551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f1a7fac3c7984b5d0b9cb8627a7554c1c300549fda1fdaac89838489beb8fa. 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/QZWFQ2395552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b36f307f653bc69f0aabb18fe3ce8d2479c3b219a5b8ee39335e522c8f2a702. 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/QZWFQ2395553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8df1c1a1031c892b823b35a8d27094cb5578e0e807bfc06ac1f311191cd71c0. 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/QZWFQ2395554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91756ce0cd5501d7a3c7b56b1e4043d3166e469792d5565f8e9f6de9428ba6d6. 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/QZWFQ2395555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6783df8e716ab7a28bd6a46e992f9203225c7a5da51048d3128704fcb5dbd691. 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/QZWFQ2395556.
Song Of The Lord: Believe that I’m Right There
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225d2c9d81d8cd73f3630729042b6efb5bddf2b5145ba4ed7e0a773bd6174598. 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/QZWFQ2395557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc632fd6a4fa7d2ef1ee57985b931830aa127340f3cbb3f57067a09bbb0c2bf27. 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/QZWFQ2395558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8916775aea4779032903e36e5014a54ebc25bbaa7c480a70e7fce4440a8fb4. 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/QZWFQ2395559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ae833bda1b2326fac322894e3358d6d3520d9b0ef6c1f546c184bbf7f6b47. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZWFQ2395560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a432981f8834a1d3af5deda10e5e8f8239bd8e24e308b10670e8558ee5033c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWFG2399421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970bf5fd1ffaefd50c2ed8ccaa7eff4f6f842918501c386ccf918d945ebada13. 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/QZWFG2399422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393b2180191464741c98c23071e2783f336b289d8fd3538ce42854672a6f0db. 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/QZWFG2399423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f0ec29cc9baf7bfaddd81ea23cb46acb64d45a87bbad13d33eebd2cf3c4607. 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/QZWFG2399424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f066606e2e1ca579ff2672297e26ef6eab5aa129d4cc61cf29ee236dfc0ff3. 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/QZWFG2399425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94932e523e02cbaaece42c8062fce32790a884b3bfe2442030e459b12e34f047. 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/QZWFG2399426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fea103f1fadc2224f8eef8f9ee7d3ba6c8e28526b522298c6b741e2ae83308. 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/QZWFG2399427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130486f8704a3499411fc0116cf32f089ba3a0e34783be7d878094cd783be02c. 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/QZWFG2399428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8353589fc8b155cb7aca3fd952ff4c80d5dc3d019c2a656f177b57b32a777. 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/QZWFG2399429.