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 0x941e67a0b12286cb41aae66b040576a8777cb1d439b0966076f975cff2c66925. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e70fa328-f31d-495f-b250-538c11c6bf9a.json and https://artists.proofprofile.net/proofs/artist/e70fa328-f31d-495f-b250-538c11c6bf9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Harder They Come, Pt. 1 (Invasion Tactics)
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 0xc1aac7fdb21785e23eb1ddaebb20bc9bc79cb9579ded75582863594c6f5bff95. 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/GBQXF0230002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab189351fcadbf51ee41f9e527f5c34595812fa94931fd4b5b4d8ea219de2b63. 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/GXB532300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e6cbe6e999a84c87eee7cfa7dc8c37f72a9897aed42c643eebe892d335647. 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/GXB532300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fb9a7ca99f07b6bab5fe0fc9cf7edb88c43dcd39077cc917ea0f58fd1fa6ee. 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/GBBHF1319552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe3c1d43072b3845347d7c34a9a15d814843044921f949f2d3ce1fc398ce367. 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/GBBHF1319553.
Warp 3 (Total Science Remix) / Juicy Fruit (Calibre Remix Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f74fe4213fd349af900c9d18b71f4735f4dad3da7684fcd3142c3f36faf44d. 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/GBBZH0103203.
Valley of the Shadows - Chase & Status Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ebbfc4410463c0418e859b9ab9b9f0001f84df22f566429e9c1e1d1c72889d. 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/GB5KW1703873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162d03b172198291620bfa7280440626dcfde83ad532c2e942ebe7f357f6a3f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB5KW1703876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275498d35843978573c5b807cf98c9b5c7b638b6247bfaa652abd1504cd9add. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB5KW1703878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73e9027e289ad6107b56f14afed55aca3a6e6c025a6329952d0200685960e0b. 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/GB5KW1703880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dfad96bb70fb0d0053b385939938ffe75c1d6354805427caee29ec6fbfdb76. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB5KW1703881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b96f6e9196d468eb349d1b8831792cf855cb6bdc4b7925a9d930a905166eb2. 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/GB5KW1703882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe31c6249925f74d4f9b6a1c0e052fc93db45fd81c875c3610791d20404bca. 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/GB5KW1703884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb748d3c02bc40bf83b9374a1b6fd771fc7618f5bb4adb6cdaeeaf7a048c024d3. 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/GB5KW1703888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fddbaa3cbc0586455aafaaece3c17ff860bdd21af7fd829cdc00bce204411f. 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/GB5KW1703889.
Retrospect, Vol. 2 (Compiled by Bryan Gee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f74266fae217105c8c472c5e5c7f39f12ccba764122f13678668e76824ab56. 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/GBCEQ1210375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb56713fc1ed68e531ecad5540d3be11312bc9213eb0006cf9fca0f6b3b133b. 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/GBCEQ1210376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c33253a14c5fff73a8820da4aa0e3c81e293b953f041fac5f74e5e34f20ffd. 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/GBCEQ1210378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ff54669199a3148ec09c19b25d35b04aae7a7159a3af37359837ff7062d31a. 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/GBCEQ1210385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87c48c94ede39bb9c3f554925e5abb68f96e1b37a8535040c45b2ee3a81955c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBBHF0930052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b774c48c70d65684a803623588120f082ef84f79d1dbc656fe250a994073ea7. 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/GBZSD0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d5032f1d1b13d4874c5c56cde0d87d40ec87c2eb9113bb23a0d569ca18a5b. 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/GBZSD0800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eef6be2b0da331442018dec7356d01074242c19f8ac255186bb2cb62b03b420. 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/GBZSD0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e27004a9f57429d9f4cc1228f6486853da3e2ba84988a73c50b2e8e0584efd. 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/GBSZM1300248.