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 0x703bd0430f11b8fc85078ce729600410cd357c7f21f818e616f0d33d4c68cc10. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e28a1f8-764f-4ab4-bb67-259a20a41801.json and https://artists.proofprofile.net/proofs/artist/1e28a1f8-764f-4ab4-bb67-259a20a41801.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 0xb48ae84420d5016775e37fd634b4b5dae8f5950e3536e60fef976fa9bbcfb566. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYIJ1900907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514848d1c95ae8a9f00cfa7007052771150e5fb0054639c364f46f4e36faa864. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYIJ1900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ea1aba89398d3d9241997279a1c2c1d96f340e63d4a08b927074c87a42626. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYIJ1900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aeff7f87d9ef27ccd397e7f806f8de5f4e1e8afaa6057b603f2387eb38b9fa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:48Z), 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/SEYIJ1900905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2736ed9b70f4aad29b5b42cec38bacc8d3d71d1bf90156dc393ac77433dc7da9. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/SEYIJ1900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c318c9f75ecd253e68e2826dfdadbe50eadf89961a3cee7fcf6d8b3dc9fd5f8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEYIJ1900902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc839c2e9a7ff9e96b7bcf863d0b58b1860047e98706942f49fec0aeef43fe9f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEYIJ1900903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387134abfe6fc37b43c9da0e767201885c94c62632791c968c2ab80303b2414. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/SEYIJ1900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aedebd87495b3c3fb41c71e5a4fd8218bd50dee5ab646d461dcf4674366f6f9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEYIJ1900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb7306ebf7fdd9400549a81cb39c2556cb87c99f50c604c5ac39e18ecf84a38. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEYIJ1900910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf310de5a79d0eb26d641a206a89b0cca8ebee757855614eb1ac3f8db220b7fb5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYIJ1500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff80dea273875fb28825749ce5e25a8e2017db5eb0d0ef844c864a5741dc47c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYIJ1500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e03fe4f5855f63bf511d0caa3765a0d26e19a8bcbb9a8f9a209a5f15c6c00. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:20:56Z), 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/SEYIJ1500302.
Calling Forth the Ancient Spirits of Kemet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04e2a2cd69431fb461a74c79249070dfed88162255a17677863d51bdb4897db. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/SEYIJ1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fb2467d4e9f3bc91442937bc001216e928f4712beb2e52787edade1a63424a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/SEYIJ1500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ffeeba37247ec486e197ef926ac70c3ddda21b07fdc87ceb6675da5248696. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SEYIJ1500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c1ff1a0548c12f9b45695e0bfff06b207086d76e3ed7f6d41ca3ae918563a4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SEYIJ1500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e472d94e12c98ff58e104de2374eb48b5ea95496f4ec82768931f8cd3ef532. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SEYIJ1500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514848d1c95ae8a9f00cfa7007052771150e5fb0054639c364f46f4e36faa864. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYIJ1900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd88b437f4a21ff02906f87467d4451fecb18052210ca3bfac3ffe9f7507952. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR4E61000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ea497697484070a44d48f245eec580044d160a767de85bb005a36536d7189. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR4E61000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027cce2439d9673a1adebf0a5dfe86e374acee4411925655bc67c794d78bb150. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR4E61000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf63cee7bc2f3b0f9114fca596db78bafe2ba9891cf3ab1cea45f7100fd6fc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4E61000520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd2a7673f0b24ef4234a6d3fc3a79dd9c445bddc6ec4397e8fe2057d871714. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4E61000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f462959afbf1177e314bcbf99be7723a5c837710c76c81751bd0cddb1ee135. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4E61000560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6909fe205c61b86f832fd18259d48548874d7ae5d617435d5aceed12fa0a872f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR4E61000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1013f78d04419a15ef5daa6155c1c91ce1811547cb73d18cd5b8ab57546963b. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR4E61000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa09cba139bf6bee4bd27abf63a3c136e4971941ac3a0a4be4a46e958de4e4e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR4E61000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee25b3c69060fdf4c4fbb08b9da17869f7a9947787e00b2bde78bb9e41b6cb3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAC582000325.