thumb|250px|right|"The Silmarils" illustration by J.R.R. Tolkien. Text below the original illustration reads "Ancient Emblem representing the derivation of the Silmarils from the Light of the Trees up
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 0xef862097b330339ff1f160197af7334e2d088bb928e620fb18d7f9555294a3b5. 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/18fa05b8-189c-4118-a8f3-f6e3aa10ef51.json and https://artists.proofprofile.net/proofs/artist/18fa05b8-189c-4118-a8f3-f6e3aa10ef51.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 0x885a491dcab45f7c7f0aa2caa4f43246a224467a84f14e6b16086265dc026a2b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRZ169501440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c677cc619e70fadcb59657430ca2dbb9594e41164fafbbe07e69c2c2814f2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRZ169501450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50311018077828a7e9a6eb0fd63b0482af92f2321abe0a19e1153e42935fef05. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ169501470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc731a1edab917767be287dad53aaabacaa026e355ca1fec4a66e7547e99b1b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRZ169501480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59483284bbd58811646615c74bc3b1e85e33e63b13388d1e3f40c74a40ba8a67. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ169501490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857eb51389c1445d7723ffc9f8bc20df788e4528da2504d0f76ef1b9eeeab4d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRZ169501520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f98c838ddd627ce472e2586749c26193c5ed96db27c58de97f1757324c1f5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRZ169700790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ad7a53e4ff8a49bcf90f2b117f6b6efed02cfdbfe632010cef35b7810f0103. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRZ169700820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8121d439c77e3034eb3a1b36fd95a3000a567e5b5960694a22b86be64be10. 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/FRZ160000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa15ce656409375c1107fc6d0e0e7e8fdc8ac211580cfa99852ad65dd6867db8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRZ160000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779abd07ee8740b370e9f09c0b7dea2a6d3d2b3637d0db1db1952f21b5eb954. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRZ160000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a4484d46ec4153e388aa80eb846c3090f2b517e820cd4f2c0e9d2d587328e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ040300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f66edbc3989c42eea6a569bd432c52173e05b13e81430d3a26aee9a15bc6abf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ040300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855b7303a128a33e7e8ee422c797be645f68a5f6b4dcc4c1a4c0ee2ffea38ba3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRZ040300094.
Je n'dois rien à personne - I Don't Need
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfd176248a20232903caf45b7610920d7ee42b8137c36bfd15677f2ca282ddf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRZ040300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718bbb068c4ba8b9e9c8f65a3378e16831a759364aec5ba5dda4c4b9b6464db1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRZ040300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb837a7c4434e2c5405110f69972130d1c5c8dc239fb52ba8555ac7bd9b52b11. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12421388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c702c950f6929b7d387011edf1e3dec24d4dd00fc96bf61f0005b796c0f0e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12365712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29edbe7675bf106f942fbf2fc1d96ac9192b90e83bd2519642e6fa82e2f34ca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12365711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf725b96f1224984cae14a734c69de2c2208df0a2ad66839967f1ab050e35e4eb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W12365714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb0791113ee558e05d796caa15ad38e6966c5adcb06c8b47cd7139a16d31ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12365715.
No Pain No Gain feat. B-Real - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb35f0460b34c0fb8a4ced6ce24822156cb29099b9732dae8157dc5db1eec4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W12421064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4178c7b537a14dab9cbb5e8b6ac439854a0697180ddfd79d5fecc03eeb98de68. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12444328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b877cf44341ae8464ea42653c422a9b78d5db7d02108322aad810689ad96e8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ040300096.