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 0x05ebba64d13d567c146fc7e6cdf6e6aec259628d2a3d3f019bb4cf233719d297. 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/7a616a0f-806a-4d09-8411-36ae1b667831.json and https://artists.proofprofile.net/proofs/artist/7a616a0f-806a-4d09-8411-36ae1b667831.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 0xb4dc621e34e327ed28f31f56a1a91f34f29041c8adb4e6589994ac86b7ce7a1a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:47Z), 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/TCAFW2117891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c87ce03631256e4dc125c9b12aa44272c122ff5a115dd313004bf48ba26095e. 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/RUA1D2169408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f104967fe1a6c8749d45ed7d7f8dd3c1cb6ae45692db046278e4a80a13f151. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:28Z), 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/RUA1D2173627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d282921777ec715ee3a819aac0a20ab370d58360d3ee93a5d7fb91febfadea. 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/RUA1D2174017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfff554f448a82982ba80efcf937a35d9defd926bafb479f080695b8872391a. 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/RUA1D2202650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac637aee831cd1073d3a95f6844b4158d303007105fc5f10099b03b8a464495b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUA1D2222759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60969a56ab006767b574a78e90b8a75195d92a2b45fe4ed4932abe24501d245d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:51Z), 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/RUA1D2232317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383a4d32e7883d07543bb3dafff43dd1c75e7d34a5bf0f4fe25fadb3907d8615. 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/RUA1D2268565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8dc57d67771172afd422f7c702bda7e904ab93f18e3c70bcd7f9f155011b04. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:00:09Z), 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/RUA1D2297785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29951f9339f150ab47e3b2d98dea50f3566c730abf4d5c3faff1e344653315c. 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/RUAGT2202689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee1050aee7fd08330411f5e469027d8716610a8a01848ea5809cb34988c9571. 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/RUAGT2225120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d80057674cd6788cf8aa542c55290b11dcc4af0d976e9812cd7a002fecb0f5. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/RUAGV2303691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e49f3c8ef790be71002fbaba4b246c8cfcf7a06fd15fde7a063ed0f29244d58. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/RUA1D2399353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d64a9c92027723d6955df69c559a9fa599993b384ca1a083ccdca704d2b3dcc. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:32Z), 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/RUAGT2345267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8db63993a5bcdd81a83c108f3481d8911d8397c7ec9b8d578dc8b6e6903e7a. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/RUA1D2417034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330802026ca3ed357a8a505c0c5572ae64823f8554aae34406bca4951ca7a0be. 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/RUAGV2400935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df1d0f8630b0a146b1b312b5f7a05b775aa58c5825b031e17378e55a0205c81. 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/RUAGV2403235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191af0b0ae4b88a45a7d81cb098c5aac7a387b326c2f421e116722dccf1a47b. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/RUAGV2406637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c8422c1b81731a9b8a7d37db1236ee3c7b93884e10262398977cf9a8c9e3b4. 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/RUAGV2407198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd711c430b90c4c3d10c268c08ec8ba154b573c9fc8194974d2d3523ea23e5abc. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZW9M2441807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddeb44c2d0672ea405ee64da1479eecde92a18b4e1c6d52ca0b3e0aed6070c3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZW9M2441808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ba57c243ee80d10df423922d0bd3ad25591df3b6fd616a428674d483ea282. 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/QZW9M2441809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722a29540feef33b17738978e876d8ced3d097d91e9d3dfd877471c1a22cc91. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNJX2559792.