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 0x8009706797e505d1fb8e14e45a1c7fb80db8af6142d53ada68a03e626cff886f. 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/b86ae3d2-60b4-4e88-b031-3119974241b9.json and https://artists.proofprofile.net/proofs/artist/b86ae3d2-60b4-4e88-b031-3119974241b9.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 0x1020744ea768bf1d6682bf8c3b7ba00e5851b4523dbc473665815541dd92b5db. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZPEW2405255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2bd32c0df048841fcb80dcee7d9f5c44b8426ce44846469293e409df05b4b3. 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/QZPEW2414233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ef14971450b93a687271dd41ab854ae9b696ee6815c7f964bb299b0ed4b42. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEUD42427046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc0427d5a77af58f03a697f6ce9bc207e2b65c5be31f576dfe20e13220308a9. 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/DEUD42427476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6746d527cd50ebd4dcb09935ab1ffe2461a13edeffb9048dc132cfcd8c5f2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEUD42427774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d229b431340a54956c732d37470e888307b546ace41b2a1116e134b459518e9. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/DEUD42439373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b7e2b72b5db53d6d671ca9227cc3822aca2aa7ea325ab2103a3a9d413377a0. 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/DEUD42443979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181fba16ce5ef041bbb68428e42d0c95fa11877b15d7519da0cfacdf94a0dd52. 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/DEUD42443980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55640febca002c80196f7b0bc68542e7202bfcf1dad076ddbfb1a32c7accb9de. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:49:32Z), 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/DEUD42443981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22e25ca2626447dc6185bd7c6919d639257e035dd94f36ab98010763ec43f7e. 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/DEUD42443982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380363008d7aa9550f2d25e9450bd71043573d673959744e1780bbbf392025aa. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:33Z), 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/QZMHP2551828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5ed305e56d27e4257e84a0d7b2b99b6461987472666cc262dd262ca4b09ce0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZMHK2541367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78807b20b5ab05a44b7267eb4960f9d900ed2a8a6c173929463a005303826f1e. 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/QZFP52308075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65aea1b3c3ef93007baeb682cf605359484234ce4fe9232d4ccabff092ddd83. 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/QM8DG2381482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66e5cab7edfa4a6a74ae5b80f4737dcad9447caf6e5c1a330e3f57e0fd62c04. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFP52396303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbefb1c4a68ad52b3614a000838b3541a9a272a2a04e5da0c272b77efa5c7cf. 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/QZWFH2524145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5d9c473979429f9c32e43b5b01f955b27f1f8b35cb810c345a8ed6095d4392. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFQ2526024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66ce55420372e0a226adee414f88415a9528281b589c7e6b800c2b55edc16ed. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:32Z), 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/QT3EY2504545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbee4c02dd5f1f210a76903d6de72de49af4b0e6cee7ba8e652231d8c296a05. 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/QT6ET2504964.