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 0xbfd31bda3b97009dc99a63dbd3f785e522de66fe5d23aa3dee97ab3c1ae824a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/090ce610-6ed0-427b-889a-770f55ab0c80.json and https://artists.proofprofile.net/proofs/artist/090ce610-6ed0-427b-889a-770f55ab0c80.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 0x84af119db8ad6c0ac88dd137729df1c5e0cadb76197f56f3ccd56bc4e4cac07f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ8QY2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f7104b591f1381a54de0d36b34bdcbc8f802bd6adf4644117fd738f606af3. 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/QZK6M2363572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bba396128e53520640415f0a1b63b4c78ca9967ccfb38b0f09ce9028b6f1467. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFM2320969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5bd5cc925767f8850474c9d62c6526b841f2ef1a7dec08895483ce218fa07. 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/GBKPL2083299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8a911c11c9ebf15277c03a9fb7df8aac9ba8d633898bed785c23ffe7915b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2025099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc9afcafb882de64b53c82af1fb97b73e9810cf3289eec6c1f8264253074d26. 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/GBKPL2025102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e0964ff6e01597a07a3c905d0822a51f3e1c9f96c534fbef8232ac3726b0c. 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/QZ8QY1800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3831f7cdbbbe9e0b542b5109a6ddd906d4a85a6a7879f96036554c29ae7339. 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/QZ8QY1800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f913930c8db3f62b17361d1da7678612d17e655b65358bdb9e3d9986e4fcb. 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/QZ8QY1800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2dee34590e4b9c361dab2b89f2a65f31fb9690d7fbc7ffafb33e65dfa52349. 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/QZ8QY1800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d681bf66d777ca793cca7c7da81cd848dd40c5bec18da1999993dc915d85205. 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/QM24S2206847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026013d24ca5f92cdc8049b4e23864ac525ee438061dc9a684cb276034679ec0. 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/QM24S2303420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f7104b591f1381a54de0d36b34bdcbc8f802bd6adf4644117fd738f606af3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6M2363572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d681bf66d777ca793cca7c7da81cd848dd40c5bec18da1999993dc915d85205. 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/QM24S2206847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140ad7d71831b3d0ed7353b421517a91f709e8b49559a1d17137c7c0cff71fe2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM24S2202060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe892b6b1f4af5db62fa60b5bae7e1db554a4de8ae50efa46a4b7aee9d4dbe4a. 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/QM24S2200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc26c057f4ba1cfb1011e6ffc5a8da65ad0ecb5dc70033235edb514ea235e24f. 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/GBKPL2142521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3c396c8f1593c9c70b67db28d70b0ffe94c7e45a027d57b88dd11eb648a68. 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/GBKPL2093981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91097f1375707456838b6eb983376f20c00c72800c51dff5b792b2f1d05acf32. 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/QZ8QY1800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beab07512c25f1ce6e9efce98df1657c1ea0db2d7a0c5a0e52c393d7c457a70. 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/QZ8QY1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19987d40a0e6834e7c95a791931d238f50ad47487a1eaaa048d341e26f22f4e. 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/CAUM81700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9400787a0239c40fcaef11709c8b2ed0606dbcf117e0126f7b2391373f28d474. 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/NLZ541600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b35a0fc79b12ec66692c324977ef4116bd70abeca60d7e5ae3d79ef11d2f899. 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/UK7H21500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f3f25d198587c663ccf80790a0859773e3ed8f049d127138a7681ab6934a9. 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/UK7H21500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84af119db8ad6c0ac88dd137729df1c5e0cadb76197f56f3ccd56bc4e4cac07f. 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/QZ8QY2200008.