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 0x46c2fdd16055f863e06424a2d3cb44c610863d695fe05602ddcf5e1bd7dca6b3. 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/ad6e9d60-10e3-41da-a518-7fbd3b07d3d5.json and https://artists.proofprofile.net/proofs/artist/ad6e9d60-10e3-41da-a518-7fbd3b07d3d5.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 0xa5a489ac337554f798004604342a4ed9b9d98c2026a4ff3dea861072d098b269. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEBL61293798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9fb32d5223196d688d6fe83b165ef2e46600ca4eab9e15777713937d6c92f. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/UK4GV1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed659e869bf6630b1a3007128c3500e9f749eef4ee1855cbcc2938b811c33a2. 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/GBJX38203001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722868f07160c9eaa90b7cf367ebc97e6a15dd7532cdb80c90125560d4877c2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBJX38205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c8f9779aef1862cac69dc67cf9e9b723514bb837c3aa4d5199db49e4302d19. 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/GBBVL1504384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07176c8c1f592720d918322437d6aa9be7f340b2a0806c61f25a122ccbfccd85. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBZ031400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a752c5c5a1638da50f5c9022d8a462abc4e3d04a44137038c78864ab04c9c5f. 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/GBJX38207004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1ce73143a63311a79589dca6e6589cd54bf2f5e4f32184dcd27b705549b12. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBJX38207008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c09564dc423273d4c8a99227d420de8042572598177453e8e437835016fcb. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:40Z), 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/NLCF81500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897befc84d16df9cc1162cd605a79804042ed97b963f799d210a82d2eb296d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLCF81500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81df9c6cac4e727e6cb37bb3bc381395710258f38b480ca28375cc54bc1159. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/NLCK41046993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066fcae0f759c1f0224d78d2ee582827b89c9a769dcdd17e1ad6bbf4e5eb11d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLCK41055165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82bf1fc95a721f7c84eaef67ed0eac36b7d7c1a6408192c2814236e70b3d919. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/NLCK41055168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a227f4dbd15af65e8880ba2e846715bc32ac5f8eb2b6eb056e5fec814226fd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLCK41059716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a07c5cb6a3d27f1771472f5d2c1cce0c721a891fb98144c9689fa884cadf34. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLCK41094086.
East London Back Alleys (Jungle Techno Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8083148c3eaea2c8526790697a50b4de21a1f83023edcc0278630ee39c76824. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NLCK41094087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3131c8c68e2b67cd4a68713c9c8575e3d83d91c8dccc448246ba05b02299b7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NLCK42212902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d93e7e096abbbf9697851f25932751b34677a5560d6a54f25b325fb7f85de4. 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/NLCK42212903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43da26e7ed1167849fd28467a42d492c8a869dbb0d3a4382e23ec7e5b52d7ce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLCK42217748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be90299e5b4113cbd0ac1105b94345d402991772129281f32a5e48bb4610ff0. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/NLCK42217751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47e38a5a8a290af9276735b287d384d00475d43813ba1ebbcea428eb40c736e. 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/NLCK42403164.
War is Peace, Freedom is Slavery, Ignorance is Strength
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb7eb1d8eca7d779234e83dda6dd11c217a1d63fe7552024f115874cb8bc5b0. 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/NLCK42415974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad10030ba2d7cd0ff00f00583034795395addb2512f488f7d68a4e4a42246f96. 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/NLCK42415975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56bfe8ed9e9abfe2a39cad3ae41970432ff8be295e0177d0f4215d08031466f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NLCK42415976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aba96772a538a34f924170254b26517de685b725c825491549179c76f1b1ac. 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/NLCK42415977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43af4d5a60e58ab123b26f866e753a03bad92deba45b29df30e17b4c4cebf4b1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:29Z), 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/NLCK42415978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d58a586bdb3aa397ec8003cbfb8ad588b34c5d0ac3f00c615930d9431e4c3ab. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLCK42415979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea63b9503afb9c4061b0cc9e736120fad3b70e5bdcd8eac7c67bf134c9b487. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLCK42415980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb185a9d8aea3f937d0f97dbf0d27c8db00b19906cafebf5470b6aadd450856d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:48:57Z), 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/NLCK41060481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa929b8d3d63ffe2c16166901a726c14783279487150ec92d5a34ab857c4b512c. 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/DEH742334624.