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 0x3d475cb4108571c5b0570471e0763e986ce1cfc3af1e60b89fd9a6574543ee10. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95c9f254-db02-4140-afff-3c7c8abbdb47.json and https://artists.proofprofile.net/proofs/artist/95c9f254-db02-4140-afff-3c7c8abbdb47.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 0xd73a9ab4d505a05b2d2426540766f7f0058ecc10bed12a68420cfcbc20f63ca9. 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/GBRKQ2288367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a866b00ef9e32209ab0e7f3faf1897cef2278b6fe1e642c951474ce18447ce. 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/GBLV62309408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8442589699d80daf10da59952554225cc1c299f5abdca592ad681dbe12805d5. 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/GBKPL2167009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7caf474d27e0d678be895e108ea38e301406475d4a41c01cff73b1b150709e. 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/ITBHZ1500774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30e3c9d72d67f646e744cb635ff3b2312b0df7829f5773b4dddf9ebf22aaa40. 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/SE6A92168791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73069468266fcf5526b85b45510a1c78fe4fb659d91136123d8c2fc375563cb. 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/SE6A92168793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1af914bae56b6f0ec94d35c3b473330eb5cd98d9ce8eb846e60b47fb79a8850. 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/ITM812030506.
Alone - Jorge Savoretti 'Latin Soul' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7834ce76e4b5741abe39483fabaa4d78db71b993591496314c7eb21b5cebf7. 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/GBKQU2091943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a12afcbc45a688c0337fab549cc5f168650cbcde921a0b44eb4bdbe50bcb8c. 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/GBKPL1974943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a7c947df8574e95402415f98759de92fff6f9656bc1db853347102b3b5500. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:43:42Z), 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/GBKPL1974941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b15bd223880392628c17f7663d0f830b2aa67806a1f407d297b10f0f125fc5d. 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/GBGD81800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e971cc53fd5aa98ec481e11ce9547a83ecf905713faefea428931a277821d51. 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/NLF1C1700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed3f3decf8f5c1fa9a5c6c204ae64e3e08c374e0e3edb0ce1a9fdce05d72bb1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEK602510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3f2d11d95f1b83272bda4c147f4b9e60b458f6864fdecd059644577c73863b. 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/DEK602510003.
Summer To Summer (Nacho Bolognani Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb707255d0f512701cafabb8df8060e156376cf955ca860f747ea85dc073b31e1. 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/DEK602510005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9811d2f09096cb69e37c424a39a781e1f0c7c8e5490c6fd6eeed339907e3c258. 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/DEK602510006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa02f757438f57223ba3ffcfb1899c170753aee5a523bbbfffb36572a66271b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2496011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa5cf0f0a7e10a52c70cd3c6cf24cc164f7ec8826789beef6fd8608bfff0fea. 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/GBKQU2496012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9f05caf609d33608f5db93dc03ee746773b39310b48a0989b8e4c27f3830e4. 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/QZWFJ2483313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ead11e8fbae91eef6ea136c33df86491c9e7dab81ca3c23a15df85d55fa5c. 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/GBKPL2204041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1af914bae56b6f0ec94d35c3b473330eb5cd98d9ce8eb846e60b47fb79a8850. 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/ITM812030506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f46ad43ae2b13d453eb47bb0bf9d369d3d23d461cf91b32c9468221bedd79d. 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/USA2P2430120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f37e988fbe6e7232b4fa382c6bf473c49a04a5c0407a3aed3076e948cf22cc. 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/GBKQU2439388.
Something Between Us - Nacho Bolognani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693cad7cd9f2f2dae78af6328378d968bed360d15f2278363e6bba959cc3601. 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/GBKQU2418960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e3ce56ec590ca724956c3568b827f733df1b9acd2db4715c1aba84ccb045f. 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/GBKQU2287201.