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 0xb0b7f79099ae75823c556f4c5ded00ca878e1ae532e9bf4c040d6924d5288784. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8fc7c61-288c-4870-807a-a3e81aaea33d.json and https://artists.proofprofile.net/proofs/artist/c8fc7c61-288c-4870-807a-a3e81aaea33d.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 0x8dd8f4da625a00e8c08dba6fd729dc271fff00acadcf0317e571cc16fe695fe9. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:41:46Z), 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/IDA532010606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9effca70004b35fb7a1e7b91626793ae9947daa7177a3377560e24678ad77d05. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDA172121131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3796fbb90c9b484cbf2c50b1259135345c4f573ad7b7437e51d170442e1daa24. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:47:47Z), 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/IDA532010603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f877914d338ec294fd21f5afb4d57f9212cd2a26daeed0c52b2a2232876f3df. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX202291961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98d591c3e97cf6186f7759fd4aa967e878ca5bbda97f6c44a08b92763cd3798. 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/DGA0H2429528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c1018c2abf4940232d88a88cfc2448dcf4e683ac5b7002304692fb48870ace. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452307657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44acaadf0861913af9ae39b119d4e829efd98590b10bbde3356910a55e7096f5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDB772103081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff025d7c541694f80543c943245cdf5f62abaf7ea5842a10f09c1e1639e4de5. 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/USA2P2339791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9fea45079a958f04f8a623e70978612c568be54841aee056e9c3f97171995a. 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/QZYFZ2344968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca62c7da2b7cbbf599b7612ca2c904de8e110643a352d4c4149b9a8cdfdab8d2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZYFZ2344969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b848adbccafb7998ce70b907c8233585831f1efb4735cb5fe8f650f209eeb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:29Z), 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/QZYFZ2344971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff868fb26f582052b93975d8ce612c5eb1c7f90f04cae32f14974df8c433a4. 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/QZYFZ2344974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87904f76e834d71680d08e34a9789c6acfd8a12f2b2bafa71f3800171e11ef95. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZYFZ2344975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec80f56194f33ece32b5c8b72df92ef88d15e61cc78aa82c3e88d19d96335fe6. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:12:51Z), 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/QZYFZ2384653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa49934d83e45a4d47b3f89192e7502737cce3c8a45db83254bb12bea9081b4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYFZ2384662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf65978b8191480e986165ec329e72ab31316cbac2230643c8d271b928af31ed. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:08Z), 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/USA2P2351352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e765d82e382361c7d59197bb167dabf315e3e2b39bb886f0641b50227db88a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZZ662412033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de15bf154730bf3e386de798bfe69e469f41b6809491d0ff277a0e84aaa710. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:28Z), 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/QZZ662408395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1195b052fe448538e7d4e56e7ed1a8f4a3e177b3235edbe1733da96a4c7028c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:09Z), 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/QZZ662408387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecccffff725d17b787ec1750396eed00594f45849c1973a139fdc68a79bc3a64. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZZ662409599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec0c2b8cc38ea8dbe9010079b17f5fe064c02d7823067bcfb34f15b40bf6bcc. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR59R2443763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186dc4f00f447c5cf92c6233b2f15c19b7336e0d3840cdf19c797f4e4af2a22. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDB772107956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6564633f5448f0afd5a2df68fb32b50ab21fa8b178d239bee049fb0ba3fa45ab. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR59R2501541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322244371b963526588a42624aad568c32220aae077fae72715555ed061ddc4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:19Z), 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/FR96X2510386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9aecd7807165260b5cfb5add5a6f4cc0ecf731bd6b93210a2598643809059f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:43Z), 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/FRX282564077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343049b0bbb8542b3be4f05fa3c75584ae89e92d6a05493bf100df609cbc6c6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:57Z), 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/IDA602500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94783caa2233f8bae9d4fe44ddd5b10ab4df1225b4e9fba7f205d380c1d213d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:34:53Z), 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/QMDA62594397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb736f490e98ace17c26f818bc630066133b98f45c4db639867d02fe16703e. 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/QMDA62595789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96aa5caf54a77dcb89d5bc8907b5acc733fc9ff3dd3fc5b14261500feb164b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA72599011.