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 0x029c7b8d37411d4f32adccef5e820e46b2669690f4f47931c07efdda3425a474. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1692688e-cb65-4a42-be48-b998d0c02dd8.json and https://artists.proofprofile.net/proofs/artist/1692688e-cb65-4a42-be48-b998d0c02dd8.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 0x9ee847af4b9465eab3715cfb436bc865a7be24cc565da8e3d9b71a2b629ee39b. 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/DGA0H2407264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bee46f82cb009bf4b6faaeea7af83507e92b4dfc97af028cf779cbf4a39839. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:55Z), 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/DGA0H2482957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b033fc951c0209343c9019103c2fc2a7382fea05684518ccdbb1a6afe50fda. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:25Z), 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/DGA0Q2417512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a215ed9d0d1abcbb83e7a9aa2b218232b1e0a0436d63a7b017a88d2d82da44. 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/DGA0Q2424288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6e720656b427ffa0cbba50d5127d7f2504618c5f5b49c990f2beccb1e113d4. 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/DGA0T2425376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e38523a2872eeeadc524f6d01ce23bb994c53b92c78c4454291bbe56b287e9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FR2X42556083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed154ee6eb7a619e5b0000ff10fafbb9f35be813b0b1343595d23e659f6161c7. 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/FR59R2544142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedb66c33f2b769783214bc7fae9bb148019f028ae86421cbbe1d91858aef10b. 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/FR59R2555474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb63c8127ccfb48669b53eca238182fa0d621a70a0f61d37d481ffcac5c24aa. 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/FRX202553682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845da23131b7ef8d96e07302046001d6d810b62e5168baf68ceadcb9b3d4562e. 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/FRX202580080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6875abbdc0dd82268e1a96735ab3e6e37f0de1cc5b29c3e45a4547fc07cebd. 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/FRX282595615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17745ae4fa18f31bdc5c703ef82e8a2a4dbfea292ce266eed9b738f4b73ddaa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX762516828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d8ba06531b38720ed5039f37a07574acb9c13d802a4160e1b2de3fa105a8e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FRX762533824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95a908a0a06273787fa047445c5d1624bb2b321cd4522bdf8713b7d3998dbca. 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/FRX762553917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296035379895c064e51e441bb417062176e7825acedb305f5477bd9b529dfc02. 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/DGA052519710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0348dcc3e4c61d92322c0259dcd75368d43e123c8dc90df9c47fb9f305c0de72. 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/DGA052562080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd49c5bb8c43f10b7317e4b9eb203e4534a531a9f7158a1b41c7f7b973d54389. 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/DGA052586945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dece5c2d64e95cf71c3c46791a037ef424548ae081f50d45a7204632225a43. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/DGA062527478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18db0dc738882784ab52415023c4d308f5b8fde05b478c81d21f15beed79f62. 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/DGA062572438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5742355bcefb31f53b56ba5ced7c8da22e57cb412ef111c15cacd6df0bef0c. 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/DGA062587260.