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 0xd241b303c18faf47a9c23978dfed85f1df4ebf4fdf39f5a6d024e6e2a374724f. 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/901415cc-4748-4051-a63f-4b534cc2f20a.json and https://artists.proofprofile.net/proofs/artist/901415cc-4748-4051-a63f-4b534cc2f20a.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 0x1bd3a8d1a0fa7ac9ada0baf952951338b4f3aa8c921cacfda3777c7f0ee939cf. 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/USCGJ1597706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31da4814b076c30e9fbf70d4ecbd73d2fa15c0097db2c29b7887e0d4c85af206. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USCGJ1597707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e087e2128457f4c61b333fa2d1253bb41afb8ae3a4c9f7d916ecaafa9f2db. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ1597709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade286efc5fa67bd8200bbd6675d6a1c44471597d947967880ebb0d24bb61204. 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/USCGJ1597710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a791c0ad769ca7a5c6c46c8a23493b30e0c3b3513dab70f08e35c3db9b5ce1. 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/USCGJ1597711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95611f03899dbda4dea8a60e14ba24cff70e70f6204da77222e243009cb6d232. 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/USCGJ1597715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830a96ebdb5104837322d96c2a827feef678bb86b51a1641e9f930802e0cea3. 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/USCGJ1598891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b9a612453c4f700306d56fe845994850244ded493578b2a24bfbae18e7bfb. 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/USCGJ1598897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe753934421cd18358fa345ac0086b520e6eaef7c28359969f0bc64d695986c66. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USHM91732526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5322e2e2162b5db102de3024eafef0ad75c242f7f2f45f980170deb8ccf722. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USL4Q1768222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311bc516e44a7bb7722bbfb39520d049ca048528b6d99bc85de02b109a40c521. 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/USCGH1821711.
Mia & Sebastian's Theme (From "La La Land")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd7f7a2f8911ec7e92e14c7d2239563d8958bafe4b0b070a45ce45ecd92f5d4. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USDY41860503.
Jolly Old St. Nick (Jolly Old St. Brique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68344c531cbbefa49759f01eeb94fa0caf53cef537166bdd1a1a5854c8fb2971. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZFYW1989861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fdbfdfdd7fa659895d4feb607c26c432f344cd629f3e403e5d5ba65a87d55a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZFZ21934027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42a2f60909b8a08badab40c5efd6ff87f3015d0f745febd1b7f73b6338838b. 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/QM24S1927065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce646b8314c77e3bb6b11fa58ef0103c7e3ecaa5fb0150a2a93cad8bb4a5c1e1. 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/USANG2001719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c91980e1031e8ec8413d28d715da8f7cbc4af255c328f5e9d2859572ea5493. 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/USANG2078541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71132f078e3366e84a08c80e856cbb57a8908a8348f56b840195ce170c74ba08. 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/QZES71984744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68344c531cbbefa49759f01eeb94fa0caf53cef537166bdd1a1a5854c8fb2971. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZFYW1989861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fdbfdfdd7fa659895d4feb607c26c432f344cd629f3e403e5d5ba65a87d55a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZFZ21934027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf625fac237f5d2fe7d1bf8fc5a0dc6ac5944f67613d2a91452a2ba36fc01b429. 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/USANG2011409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96af4c888cf4e69b1a6c7c1fac2e0ce1759a44b5f30e979d40dece63ffde17a2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/NL1LE2101945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27468fdeb084724102b5e4929229fccad723989600357674462b485ae9fd9785. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1LE2101946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48db0f50f8d082ddd0ed9865468136d6ba606e0506ecceb1af2dcfd5e66ebae6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN42199253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe318b9bc5bb799bff718d2a71517c70252e7cd942a1ae894c50d39683decc1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC2170636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34465513fe23b2943635efd29ae1c0c526ee5f711d8f17ec5e2eda7fc8c4a3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZN882202259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2d5b85ca2ac05c584a63a556096c29225c38adbdcc6abd9e6095a0af7c0c3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:20Z), 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/QZN882218766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2fb4e3fc3f4bbb96abe8b9444d18daf2a011284745a598aafa6d3ee71bc26b. 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/UKR6V2213955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f71479f3fa0eab237a9159cdc3a47e566e9a0e9d889aa5628a64b825bf3fa5. 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/UKZGC2301889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa097c742d5f75151534dc08d017225bbce0bc68c4e51bf9edf52990be6244. 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/UKZGC2307299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f6584a632b8da73187d086b16f0ab5b05ef809f329735180f2626eedda68b. 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/UKZGC2308400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa2a7c5d62f8fd1a0c66aee8ed4009f33c55988e0ee50a354641ef44d30f086. 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/UKZGC2501186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad7eb57941bf0f1807de7a96603a508dc2714d43417d41c2d369caa62fb562. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKZGC2503716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ba5ad723e1013b77179b5c515592cc2aa58c8593fdabd627af2feea83fdea9. 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/UKZGC2504970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7245ca5725dd4ff010769a27c0952d717ec9fdf7b62d0a0c0784d8f96d034d. 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/UKZGC2504972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02637f89219ca9888d64180ccd6650bf73625c23374bf55d4ce9f1de85b8c15. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UKZGC2507628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42a2f60909b8a08badab40c5efd6ff87f3015d0f745febd1b7f73b6338838b. 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/QM24S1927065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50337ae479d1649900f18d968ae3a722181df4e996cb645b68c2040754a8266d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USXG91900002.