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 0xe64fe4bfe11dd0b4855e2e22eb7586755126132fda45dd3d9c25b70371626d4b. 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/b84feae0-4d97-4853-8627-3b7dd2f19117.json and https://artists.proofprofile.net/proofs/artist/b84feae0-4d97-4853-8627-3b7dd2f19117.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 0x0f933df3effa11e9c1d719ea4485c7b1e3772061c017c8c36c12aba5015da36e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:26Z), 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/SE3T61601301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950dc7fcb662fb7d031d1df1fc4bba30898b124942892934894a66c910d1305. 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/SE3T61601303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b7e7f62495c39adc91a012de7b167b4155b5dea12940538f96573c236d24a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:06Z), 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/SE3T61601304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1433c39cd90796f88fc730ce1ebf8d38ab501b18131a078cb64ccf963111f4f. 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/SE3T61601306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe023cb709cbea003a9aad25eccc52765bacfe83e83860a2801473ed1bd58fc62. 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/SE3T61601307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6f25a794c009b4f01d69f4ad8763773789e6801d00c001ba56b4341a5e1789. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:06Z), 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/SE3T61601308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550f904e7c080523a7d4b7f4525f305544ee9a256300f064b1426804debf6bd8. 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/SE3T61601309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102dfed22eff510bbc76e335a7da319071a51961cc41ad5636311bdba13265c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/SE3T61601310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed080f0940474c5d8bd540660630f30d8cd9d821fbf1c88567fa3ee01f66ab2c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE3T61601311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fd00ef84ce40c14b544701d3a8993d5782ee58e468a8763ff68c004bd292da. 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/SE3T61601312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8459ef39eaee9bfbc7d1cae4acd8c6a9e878faf56617cb91bca10f8d814fa2c5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE3T61601313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ab91d34ccab2c4824e5bc24ac8f1507b543e1d06f5f14d631f5099392b7188. 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/SE3T61601314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa866f9a704fd4363f36b83e47ac96cb0be0a422a800fa99c6daa20538210755c. 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/SE3T61601315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e94549e0a59a547345e0aaf4dd3cc4dfe5ba354e9412a24a10a9fac3ecb077. 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/SE3T61601316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59489cd80af87424f5f8a80d5917fa3871f226cd1d7e35ef864a2a414969421f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE3T61601317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263a67103e710573b15ced9bed4379d474447b7f6fc26add39681733630427c2. 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/SE3T61601318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4aa287fdd244f7283675801e03f623142f861e52c6ad27c035e8080ba23ec6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:51Z), 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/SE3T61601319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ccd8841f21b8f6115152f22a54e445eeb6d932f6cd95600c99970b22db9d6. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/SE3T61601320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08490c187e76030da4882cd243bba770ff57893bc35b8481b0ba70f5e88994b. 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/SE3T61603801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e1fba3be2194e373e8caa952f0b6a8f87e74e83fdd59235ae3d89e454a20b5. 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/SE3T61603803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb556b7f6b8c1744e15b2ea4f418a4fd50584c2d0525e7b0571e6d02ee7176e63. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE3T61603804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e0978a3f03f92eaf877ff2fd2b0325ba0bd4f3e409343fa2357b60f1598ba2. 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/SE3T61603806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f74fa64aba794743bf192b2ad72009284fc71da472472043807198e7a4ccb3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE3T61603802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c17421da81aada8b889e620f124b7e30d1a954a35c5a9652cbe1b37068f73a0. 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/SE3T61800713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25124a012c73aaaadf342c8eed36a097faa5b0bb19835e9b801e9ff05d914e62. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE3T61804104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a289e52443b3567e45e7cf659805aa988671533a696878bb917d9d91eb33914. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:09Z), 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/SE3T62102304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdedd09184227b47ceefb9b755943f5f74023fbf9ca0374be0b9978a412186c6. 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/SE3T62102305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f74fa64aba794743bf192b2ad72009284fc71da472472043807198e7a4ccb3. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:44Z), 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/SE3T61603802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc891aac460d0b6468803d7d5142c4d5d5a88f16a57da02592bd5a32204d56be3. 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/DEXN82344759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054390ee676f045f310426cffb2e9c54a0d92f9336519f29dc65ec1c0f126aec. 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/DEXN92341862.
Somna till ljudet av regn sommarträdgård
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4e788a7547a0fe4b9c6f685d8e088c7164520cef64c5745dc79639b4ef5ef. 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/SE3T62303601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9f4551bd9558195d36ec8354cb82b7d1b1d0b6e2f03354128cd6ce6a76180b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE3T62303609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddcd4a500b7c0d6e860e1feef760e07c607bba62a02373081a74427fc5ac93c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE3T62403301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f02975b8b679fdbf61f90bace6ccbcf43b534a1f4b05632e165c99fa73c85. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE3T62403302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf440c84b7ff063aca3205454dca4f3ef0e0a84ae27564976d66012cb31a281. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:37Z), 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/SE3T62403303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3de1f648645ca63009168d4ec5bd72fc007279fe9ec5ebabb8239dfe74d243. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SE3T62403304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7262bc5b4873cb434573e37e4c41b08cde35f28e2217cd70bbb35dc192d91c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SE3T62403305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c27676a11e0a3ea2e588848771d2d008f2c6aa6333250f1f6f41d9b0e267742. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/SE3T62403306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a72ab74a6b3f47c32d4a70ba2e09332cd878e1f21cdc2cc3ba8469c82e465. 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/SE3T62403307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef7c4f01f5b6391bc8a66a23b62c773a313be498785ab1c02ad0564d538c62. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:34:06Z), 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/SE3T62403308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb442c3db6566789e4a3c6cd32ba7e6a6d2f3b9a9662f16fd0f2b40ed095ad6. 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/SE3T62403310.