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 0x6643d8d33f25a16a776ea4532ed20acca0be8f2ea1f8bfbec6717a99595b3453. 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/943b736a-960c-4f88-b0bb-e4e82e3e86ae.json and https://artists.proofprofile.net/proofs/artist/943b736a-960c-4f88-b0bb-e4e82e3e86ae.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 0x9993662c3a5e6682c3b76d88a92cd5589e84b908e1020d18d79651a950974486. 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/USA2B2404308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a084437ef43a26e792aa7fca3b144c81402a5fcfe574cc49ea5d51bdb46e3cb. 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/USA2B2404317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa33aca0ef26af392cae749825c5475ba6f937898ef3e889d3463e07c4dc5b1b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USA2B2404318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc126f1dbcabaa6c8b78f515502f09cf600a66276faac3a41f46636e50d18f02. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:11Z), 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/USA2B2404321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b406e220002a5b5c03d8aa8a9c2deecf4f0d2c1b70c4956ca9f0c5fe575010. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USA2B2404326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a3f6565fb94e33b5ea1681ecc37659ea7e5d603ba60d9c2f07a0a6c9e5bb6f. 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/USA2B2404328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8b9862735b89f798958f51becd7492448a6162d6ac98a6b7fb6ab01d32e8d. 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/USA2B2404330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc68ee31fb3c55e1fd1749798b61af8728381d417a5cd4fa56c2402324c918ce. 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/USA2B2404334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ffc5c22359bd339676232c282eee2813256ef3ea789884ad738ab2a4ad979. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA2B2404339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194fc867c7fe8ac988875782110cc94a82da1bfd4a13ff7fffe9609c9a84078a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USA2B2404340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022902c90be91806d733a23c6c536add8ee093faff3c80113dd387189225fca5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:02Z), 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/USA2B2404341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f12718569c834ce6291051c284c8d082c167841c3f33cb9f5d9e483c967ba4. 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/USA2B2514724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49948fec183384dd4b91aa6cf2e6e8f267f0eee7f0c76b1b53fa15d35d5b0dea. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USA2B2514725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74bddd24de4b5d4883cb24fa58006113cfaa9198b145fc86e7af73a954228a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2B2514726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2507b151441b84a0b624798a49d401117151dda3c1446b7f601bd98b3b4eba07. 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/USA2B2514727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb5deca3c7ab995e29d25932ba1ad9840085b0f5edf3f2007751df4a7a75909. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA2B2514728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d8f3693583a6b81c45c8e9dd9c2fff19639819c494467b2a2f3dfffbb498a8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA2B2514729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d6bd19e98d66f98a0e6b2eb5b7eb5ed6525f0cfc7e481362018c6712db997. 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/USA2B2514730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f9230282520de76dab05df5f2e1bb9a15cb0ce9eb98545ccdf764b0a219664. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USA2B2514731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a58c90e80ade08e54bc946e3510a6bf994bf194c5c169a5013c36a11b27002. 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/USA2B2514732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f6d1b504cc4784ceb97afbfbdbd212da9e7061e88de048ca1e01504d9e1b1d. 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/USA2B2514733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb167e495d3bf6dfa062353e3c7518840239391e69bc1dd29fb828a3f92a12ecb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2B2514734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9dfca0efa5b9e22136e74485b712f20f3185eb923cf7f54e7d2583336877c7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USA2B2514735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec743fa15220ad82a9122b2e7d212d0f5f5a05a64825155fba5c232e03f327b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USA2B2514736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a6ec5e91f443911b8a31b5a1eb5967d810ea2a284293d700b14578cec9580. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2B2514737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7967d1b778a6ef428019b28100f81e0162c9b8535b53d110439c5af20ef5932. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA2B2514738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90649d72596da7fd7a638aa7b40f940fef74a9c0125a3cc2f3e7d1445185b3b1. 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/USA2B2514739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a02804fe80e54efb117b9201e84472e2f5709c153946f912b7b5b51eadeadd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:29Z), 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/USA2B2514740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a67ebc8526cfdd6552b3411668a5320c989655460682c2e99a5aac3d10aae3. 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/USA2B2514779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b015304edadccb5b2b8bdf77c891ea8e7408893cb6fba72ab5f553dc61e364e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USA2B2514780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c30931cc7666b362152d953804ec91a2259fac4a680af912ee367a33e581e5a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA2B2514781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c938eb2a0591536ff64d94880b3d1fb0f381d5feba205b094da76106a8ef8d. 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/USA2B2514782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453199f7da2a5106af3a0239f823e92fe9a8b84c361d7945f84b374c518a507d. 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/USA2B2514783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1def919e240c4720365e4e81337af6cd87a332f33c209d5d95cab66be6741bf1. 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/USA2B2514785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b419d6007eaf3a713e2cdf331b17ea39e79aac9e5712b84d61645f1a87ee8d. 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/USA2B2514786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9e68eb855cf5370fd6feff8ac19e4672ab8418271fb1064906ac56d6e2042a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA2B2514787.