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 0x7b49ae6eb0b98553d1442aea49dd7b6c1c1e5575143c2cdc3aa6ed1a0ebd6e1f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1323e13-7a0d-48f7-a436-7c8a12122fd8.json and https://artists.proofprofile.net/proofs/artist/a1323e13-7a0d-48f7-a436-7c8a12122fd8.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 0xe046ebeee571aaf878eb048af36060f90748c3d9117710c2fd48bd7e2cd339f7. 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/ITZRF2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72228f27d7a5ba4ef1bc43dd6d015fd05d8b10a16fa608c19e48b1f225425340. 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/ITZRF2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448e32d42651d64e0c4146fd0c6f16f5bdb32ec5e4ae3f63504bcc1d53f2edc. 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/ITZRF2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79de62e999fd53d6898df829211c4aa5d5707a3742346ee040efb9bb560a7cdc. 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/ITZRF2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0b99ee83e2c403ab76ec5c8ac8dce81b960dc4889b309e74a1ac59f3b3c31b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZRF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38ba7991f7ca8ed673a07e75dda1733618595575c4ea3de73c86fe0020d6ef. 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/ITZRF2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38ba7991f7ca8ed673a07e75dda1733618595575c4ea3de73c86fe0020d6ef. 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/ITZRF2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ebe3ab074dc22fd4bb2f3672fa5d89ba5851cc2a30fde6c297130991050814. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZRF2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311e6148b59590b9da342e0304543fbfcd1479071614eda090fd05c0337de7f. 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/ITZRF2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ce040bae23106493a42a5bab9693e88317dbe6bcdf18557d86a5f5e4c79312. 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/ITZRF2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97db9c9d2df1382a86c0e9e402dfe761725cda12ac3b9e49dd7f6905e1c0538a. 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/ITUM72301466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd5b4975693c0c3825bdd8a28508761161c903301577c8c81bef3371be3fa53. 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/ITZRF2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3028a20492945cd84c8c82d819dbb1eebaf26c17e96e7612fa6d98e1cf9650c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZRF2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5e03c838711274767c3ef6f78266ec7a7b738b8936631a97bececa3375d3c. 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/ITZRF2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f893a0ee7a5c7914d6a6ca9ac40707429bbdf2820d7743be4fe907491e48580. 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/ITZRF2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b54302248b3fc08e7cd461d20864f988866c34aaea4f02e65ba4249dc9a72. 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/ITZRF2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904360af371d68151828ffa597b2308cbd888d66ed6f1f60482861b1e6d5850c. 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/ITUM72401243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d2e340911b4b5c7792de6ff0d5b36f905c215cb2895becf545f57c6a23890. 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/ITUM72401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed41c32d5f65708909259fe8f5d28712cec693d548d42b136501c0765edd907d. 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/ITUM72401245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2151aa6ae20cbcc4970edc1b66d113d0bf32cafb03aa8c38ec74c97fccbd2e. 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/ITUM72401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252adbe972384b0cc850821ed6a6d14ed593fd36da4480cc96dc576c505bf1c. 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/ITUM72401167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a040ec61eee8c4ac6b5eab67d309a7923b7e5bd2d0689840d63a06117ffb627. 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/ITUM72401246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626bdaa75794f3678160d1cd72ffefb3038574b2f6a0276ef936ceadcfbc13f. 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/ITUM72401253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eb05acba665139297efa08adbd96211cf7eaa9441c4c9b87db068e23589ee2. 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/ITUM72401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb7afa37d8c9710ba98d8310a3fda52248c6764fe8aea765d5c14835deea8b. 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/ITUM72401254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd93fa3b56d032407fa92970c47a26e1283406bf0feba9095944bdd920aeb8a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72401255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bc3a835515f25129ec68570a3748206399545e76a7a15148240a4b6b64f78. 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/ITUM72400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a6d90873146e7ab78da208804495ebbcb4f6d47edb98137cc091fa9f7e680. 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/ITUM72401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396785b06c9657af6a76ebf1e13c7759535d36661ac5402df1f26c94bff244a8. 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/ITUM72401256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a52322c1e23359567279d69b92963208bd3817cb22efa380e02376f3124afd2. 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/ITUM72401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11a7418b72b726fae0b9fb87bee96692ae96cc7bb37277935bef4efc8419445. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0d4f6f3be0c33914aba79b91f8fbc467c19daad7e88002b28c3578c0e9bea5. 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/ITUM72401249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf715c5dc02ab6e694cd898f16f49f959486751c45ae3770a87120c9eed0d7e5c. 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/ITUM72401324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e999be5425fe91fb64715214d1cee1b70f8966f99ea034758ac087d42689892. 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/ITZRF2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503bd3750f54bf23c378a0fdc39283c608ff1f52ef15db916dacce6bb02bb27a. 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/ITB002500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd581e4f84329315c28626d722d5ce25a830656298bfeb2cef46d4d572f20cda0. 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/ITZRF2500034.