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 0xf60994bde9090a0d227fa5f6abb765c9a25e18faae22b2524aebada9eea6c853. 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/938d7707-5b62-4904-9fd8-7976876015cf.json and https://artists.proofprofile.net/proofs/artist/938d7707-5b62-4904-9fd8-7976876015cf.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 0x155960fbbbb1c48bf84dabf8df6bcf20422d0ea6cc881cc5cc3a7656ee840901. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DK2DY2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004dd2917acc130c69f39d5988ba73788091a4e042045b22a56e8f013cb75aa7. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/DK2DY2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7ed1bed54d09c5ac5cc911b8a6fab41ae9b83316adb6dd9cf7b615683d83c6. 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/DK2DY2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf587258706d126e7e8c0a9b11fd256b0bf62fbb694c05faf52068fc60b4bc51f. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/DK2DY2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06f94c89368e9e59ee3709b70980baeb188abede5fe78efbfb4a3c23641d168. 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/DK2DY2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa532902bcd4658fa2b046a55395dd262dacbceb76462fa2fd60bfbee65140. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DK2DY2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8250c4eb76ea5a02497999370d643b5441b3553fa35a33a61317d4b88e7034. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DK2DY2200032.
Åh, Åh, Åh, Åhh, Hvor Gud Er God Mod Mig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4dfd60f978384b5212064cb34360e77c0318cec2ccdecae3ca6c4968edcc79. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/DK2DY2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13780ba2b9ad4b9344fb6582a9316c9b202af39ef4581c03937554abba59a3e1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DK2DY2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83c4afa16a1bf89c2dbe69249a01d8aeeeaf79457143d905c7bbfcaf7b498e3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DK2DY2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0a3b395934b82a0962a3fecdd357c36c3f5f91b14b9b4dcc808e48e9e8d74. 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/DK2DY2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f511d7df5d909e0d69a6bf26cd907e901c7555e3ac958af498e94f4b04b9c9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/DK2DY2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beb0787efa2c0fcfc900a2074d19e9b026003c6cfd9ca00d8107aa8f746f0fe. 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/DK2DY2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999a999d143f077999b7805751b7e14533e751779e8a3f74c1058dbcb97ecdb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DK2DY2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a5b4915b651d39245ca329762052a1399587e97147d1c98ab21aed4f867372. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DK2DY2200040.
Hvad Er Det Der Gør Jul Til Noget Særligt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3828af13192e1b2bf3375bb8b936f6390e1d4223273d50d7e580b39e42c593. 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/DK2DY2200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfde3e9ab18ae86068813077924c5deed7a5437118352daa92f7a0360efc7b5. 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/QZMER2475535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d57b8fb97433075c37de12c3201e6f9e4c4e775fa9279f180ca9dc8fb7039e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZMER2475536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab424c1295603abbd0925b975d21591fc593823c157a34c09e8157750e6829bd. 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/QZMER2475537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bbaaf4d3ae79f546c13045fec16694ae02fa203dad3e36210945e0cfe83640. 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/QZMER2475538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b44b6aff6b66ab7447e89d59376fc40cba75b9a4a59ec272f38256763b99862. 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/QZMER2475539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4cbde7fe8db5361230effcb4beac801c5e02f9bad6c288d8663f84a7fa5666. 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/QZMER2475540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc786e1029f1f185c12dd099d303ac3011b5cf7a57d6c078e4bebe5e3108c1. 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/QZMER2475541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3068698668054e38dd960f368734eeee4e4372eb9b6e2a23eebd81ab76444b8. 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/QZMER2475542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176651220c9dee2cc09501fb3598825cab847eef19d1b79b60c3c1838fbd7606. 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/QZMER2475543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f9757fddcdf1b64eeb1893e76ad466c976a6d03c0bba29ecc08752c1881bfe. 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/QZMER2475544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759bb2c0344cbb64048a5820225f16eaf19d5cf63aa7ab2696038ad991b5db9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZMER2475545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf526a3692050a20b7e570f8b104fb4b176807afb613f3e863b53b787f7fcd4d. 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/QZMER2475546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e04eb15a52cafe1e76a19f12f78ecf193016c70b4d595670840ee8a49049b6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZMER2475547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51746ae4edfdb3572056efc56cc0d5f3d0e5b8dbfeb0717431a347d5ad044a26. 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/QZMER2475548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8de07ab76a6294a69717a50417cbd5b5b1d9874d687e6008189daadd72e337b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZDA72587043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc13ade3fd12a8c36dc6907704692cfeff32d1f90627231acd80a40e9ca8aab. 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/QZDA72587044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d62bf96118b21091d3f33bb850276e31282c7126951d823f199a7d2cf65c237. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZDA72587045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dc5f5ed4e8c79a287ca05a206cf50faf8cfe15a5bd12864c2588144efadd45. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZDA72587046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3433ab6e884f2149bd718864bc0c1b5a0af6257d9b6c73a214996233a78a4b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZDA72587047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e162bfa922361e33f7276b34c9ae90c17ecb139fd48191cebad92615f5f06d9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZDA72587048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c176f016981afeb070bb7e02cadd822d8ee40fb8c826a6ec6536fbb015a3f2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZDA72587049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4de6ec96e6d8470eeaed2c00856364fe7b0fe32acfb7f49b489a297ed3001c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZDA72587050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdfd495dbf0332d534d1158800ca0d646aabec7876e870c7ca3541974db6684. 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/QZDA72587051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb4272105e3e581351054b703a42390facde680083a5b4775f844ec857cb2db. 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/QZDA72587052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4affeb01e1993e401442b856c4ec9462cd8f2666bf4135106c728c767e177c. 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/QZDA72587053.