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 0x8a2968ac9a900b0512c3ff875453a24ec6b86fcf8755ddf1b81c3c3c9abfe10e. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ed84b37-c8db-4877-8352-5f780abf025f.json and https://artists.proofprofile.net/proofs/artist/7ed84b37-c8db-4877-8352-5f780abf025f.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 0x711d17fb8211b863cfbe53a321df6f4b7ecd69c8a6245e742cdae2657598b16a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:31Z), 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/TWCC32415837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5262e45b9c6ba84aa02d90f44b1226b75406e44322a4978d520cf3fbdda05d0. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:48Z), 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/TWCC32415838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0115ffc16febcb5622a7c300ba1c1c199702596fdae3769e1f5bc53a0d87773. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TWCC32415839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd39032e28622bf6372477a7cec5d604c3f4cef3dc807b6ab507bbb146330612. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TWCC32415840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ea8bde5fed5c18e1e8b66064b4c11f57a8fc9ce4e2bcfac572d743b67db38. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:37:29Z), 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/TWCC32415841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c6ef8f20bb32528b292e2021fc184a3ae15c7a7fdcb6d951987f9cfe0adf8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:35Z), 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/TWCC32415842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3cb8e4783cea01a9cdcbe726f0b9685dd19f538bab33383edf80800ff8d3b0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TWCC32415843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b0d4eba8a39d199517250106e8763070d76dd1030bbd080b98f007f5ba4663. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TWCC32415844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9847e88eb365fb639d379b94b3db944e76f44b5e2bef0e3e6b0350021adbeeca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TWCC32415845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beccd20c8c87a940ec3eb2343dfbfdf6f9dc5f714119bfb3238d97e7d0851b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWCC32415846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c2ffaf2d3d5034a4f243551d33a0623cde35a7db6dbff1eccbffabe8779242. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWCC32415848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd80751eced6bd8eb9d074d6d3cfa946b3f44bc7480ffe21a178d0b06de9bb10. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:48:13Z), 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/TWCC32415851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf838e82209be7144f3f841436f92293dad8f3177bba6906232941974aefda1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TWCC32415852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a32b677aaf6d84f8661c0828bd0d0145d3ed60147d20e9e48baf671a0294ba. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TWCC32415853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848c1bb58dfd0557d6402d7e7927538ddb42e0905dc11a1cd794a26e1f9b632b. 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/TWCC32415854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4133e3df8682b50e4064377852bbed7f3cbda0bddf5c5a1add2045b81f76b. 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/TWCC32415856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78c0fa98d1cd884244d08953b13a05e8acdcb12e25b5fc86fd0cfb73630a55. 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/TWCC32415857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437cc164ddb26d60acec5ce1915b071bd102a9e1d40ee851a1d2e0b6150344c8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TWCC32415858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0974e1563a0d9e9dd5cf0311b2ac9da4ef1baed7bb2a0f3aa6b5187eef8155d5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TWCC32511645.