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 0xed1bb204a40f6d5284becee65c0cd1d4943d013fa6c33fe98d6a0a8b14bfac7b. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d17c5c6-653a-4b99-8dcf-3513c5bf380d.json and https://artists.proofprofile.net/proofs/artist/4d17c5c6-653a-4b99-8dcf-3513c5bf380d.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 0xb3f5beca77e69da818daa0c99ea8f8769e844e90899c8b590248914ecabb9d85. 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/DEZN82529954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd0ee0f7da411f4895f8d8e8e89b4e3f5b9e48c12b9d1ad45d1184c45f8766. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEZN82529848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e95c805051d9f933714880d06b7dbd0f58ffd5ac32b3c472f534c553473d1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZN82529780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c82d52333f0ed073dbdf68a7810b0f9e9415ece001008dfbc57e890fd576c36. 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/DEZN82529824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3c3f5a70acdf785ae7649f1e9ca0b947670afa415ae6bf9796354e3058f108. 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/DEZN82529798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740ca043f0a67e4a49d59653b24404437f705114a8ffeba9e89ec8dd60202bcf. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:52Z), 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/DEZN82529941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4318556a4f8ab2a2ca889bf606b2ecf584cb744ecb6bba9a57751fc762a4e8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82529917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa465f0798ca08b447ed146aec45acd3e26dee015fc3222e32e0223f0faa13ce3. 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/DEZN82529828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35471c0e6e31cda9569821c9cb572299902ee27c94b4ca21ccacc718d96e8b3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEZN82529776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44417728d4b7f26c66354c50273ee4bb65840cd15a981dfba6657fef14c025b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82529832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21bbd03e7204dd5461ac039dbf38726c2646cb234b63f73369210450164266c. 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/DEZN82529963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27980fe61916586696fa93bb029b98815e00e72caaf308ed38290be933bd7bf. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DEZN82529785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2915e84d30efe23af12bf7a570ff764e8219932a3962d618bd06c1545c52c. 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/DEZN82529926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d79ed58389ce4bf236468fbfe34716c517c78ce4c41c486e068d5ce997a044. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82529949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43db982cb0f19cf17fb706d3df29776044c18230b218264778abd81ec6874815. 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/DEZN82529915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0881c493b5a15ca0a4ecec41616def7b15e2d1cca953c24d522c94c031526e5. 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/DEZN82529797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32e84f370afdd38c0c678241449962f4ba04701b3b420845c39263da48a5ef2. 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/DEZN82529862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2a8808f731aecaeee6a8e85a784ae7330bc2ecbb4769039b4b6b54913e774. 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/DEZN82529817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4f90cc9dce2af628f58ab528a8185a1abf535c3a8127698dcd7ef54186c35b. 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/DEZN82529920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b44dcace1cb45c05def82a689fcef485e9d2590636e18e41018a016b637023. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:41Z), 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/DEZN82529897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90003c3cef87d6450d2c73b2b26d11e7ae598e30b6ef423808a7f79a81a23c19. 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/DEZN82529778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e7d9950e251068647c27f8f1f671def3016687ed763cffb5e100a904bc0112. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82529869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb696a15f17f381447ad669b128be67c1c892dcdf1e9da9da03d5b6d9942fe834. 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/DEZN82529993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78d5001ac18ab2aa6955a539c7ca4eabef956e6aeaee472cd072bb5ad5b497a. 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/DEZN82529944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28409673d5b862562a20f4d53049cef3f9d8d6dde84abee2da3b26b5e4f8d829. 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/DEZN82529846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5994ed03eaf0b6998e2a2bd657873eb05854bb06efc7ab5cfd5f9bde58e4cc. 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/DEZN82529792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096d4d03dfeda820a962ae2d8735e7377711688282d7d8ad796ef159713e6d8b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZN82529843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55daeb4d4143392c4baee1e7b559275c22adc64017f4226f8e2b18f9f8e6eee2. 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/DEZN82530000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded15b59523858ed2830b2fd831dedf9278b4fc85464b6a79cbf0dfdf8970207. 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/DEZN82529921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fb488d4a588a4c31e2d4b660db711d71b63d5fcdd6d75898a514cc377f3762. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:36Z), 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/DEZN82529987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c4b329153b0618d22bd6963a50f2935daa512c1274fe2fb1b3beddf79c5e42. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82529868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334909ba7ed8e6ef3f1b1b9c5ec72c7458bf069722534f8bb0654f153ad611fa. 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/DEZN82529955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e111e1a87efb36e812f28108172c63f598d3f553f3b80969fdc83f97b0d4026. 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/DEZN82529968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb8fedd980bb6e70f8a73403313e521b7278d7aecf94b977f3910b2ba6ed0f3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEZN82529891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84c6465f0ffc29fdee05ea43e745fe2ac053a830271198b77fcaaecda9ed44b. 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/DEZN82529783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de0241389a47573084f76d19619c6e50e557878f8cceb42b2810b98a12921f5. 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/DEZN82529831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece2aa183d47f49f3e33201f692a5e82edaea369fed7f8262035ecd4fefb5f04. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEZN82529874.