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 0xd186300e1ba03068d3a55210ad154605bb7314eca6d689a15e3e125e2a46536d. 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/eae0cbb0-b1bc-428e-99db-32ef5195c54b.json and https://artists.proofprofile.net/proofs/artist/eae0cbb0-b1bc-428e-99db-32ef5195c54b.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 0x9b8f6f34db5a1b228ff1ae60887a59e800d18b220f1e592967733dcb1e1f631f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFZ32565912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5eec44af47fb3b70db79c150802e742c949f27d8e6bbf160bc51731a0bf9f. 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/QZFZ42508019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e1c4020302a9d9419f66b377778afd2b8dbf3a150917075277d771c1516e5. 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/QZDA42517856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352ed6fdf9692aa5d9638ead9cf5b08c96c145ff9c521a3f831c0f8295261f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:26Z), 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/QZDA62510970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd02cf40164557691deccf9cee4353ffbf5cf67ec407ae10a08df0648b99a21. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA82544017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2014771f044437e0229314ced813b9a046cca086e6cbcc693f3205df0860a57. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:36:45Z), 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/QZES72566830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c4773445ad09e470e0050d585f5c9cdde033e1a51fe6cde016e288cdecfa2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHN82570650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a9c101364e41623cad00c20da4008f087d41db7c90d5e3c55fa20229d16663. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZHN82570651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfee5fdcad6095548e9bd5092c4dc19c6bf88805856d7aab4d2e07bc48fc990f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:39Z), 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/QZHN82570652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9387b3f49ab3b344e830f843dbfe32425566f81819e28ebcc065c6fef5a1d82a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82570653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa43c16298e4062e97360836a2d2d8bde56b9f5d5e7fd3e50d9778467bee139. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:58Z), 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/QZHN82570654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092082be84f9a022b2b3c5126b456f7d62ea6a63ea602689c589cdb5e3095f50. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZHN82570655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a241105146e4daafcf3144391f347233311b9660138708cfeedee484f6bc98a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN82570656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95352c35f5d2c10ff8c1d110e1990214deb664e255344487a455892b1d61a0ec. 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/QZHN82570657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe950e9b101c65cd0b185a70ee3082c594614f6cecf2378bd8261654ba166d7d3. 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/QZHN82570659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091fe63fdfbd29e896bd58d60086dbd794158f4fada5825ab1016d3a2317279a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZMEQ2598599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3e1acdc4f050925e9f79e282eb119278bc3594d5e060c90826cb653fb8fc82. 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/QZTBA2522238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78f320f2317763bafb3d12af844cdf356d5924a79bd09a78b6bd0f529fabc9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZTBC2583328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db413dbb44b943bf053d242b44611b02f971b479c1c53c5c4f6cb8071718ea. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:44Z), 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/QZWFS2559027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9e752219a4e51611ad561ee19f0f4bea9c7f167bd3e7c8f94de7fa84f76e3f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:09Z), 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/QZWFS2559028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc06e95ce596eace92b9f18229e36d29407b8c44c47803373b10623edcb2af. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZWFS2559029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42837442d6da70a82d09ea25a4458158a60f8aff5f3f894acec721c127494bec. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFS2559030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa809740416e0dd8979183af78bd4a4b379016b5c729c8e8b2ac32e8e16ebbd. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:37Z), 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/QZPLR2522341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee53d2e5445ea513fbbb2b3f295522aebbe8312b884d5a039a457f0d608dc2d. 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/QZZ7M2566572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64380a6f0170b012e6beb60686d12720cc91edffe432c2ef6276c0cd0f23b3df. 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/QT6E62524542.