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 0xae494640094f3d1027d621d3f690d614aade0aae813affdd1aaffde9de02e07f. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae322e5f-5e8d-4894-8553-141ea72a5125.json and https://artists.proofprofile.net/proofs/artist/ae322e5f-5e8d-4894-8553-141ea72a5125.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 0x642e68bc61366a3a68a7b8b0beeb7014cd5c2f96e8ec90b65ebee6862371593f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACN1658276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755725dd52e13799af63dece9c5ed959793f8bd617de6e154267d873f1655f0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACN1658303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be3a31659f369952c5a969642473e354e98d7357be763cc25286bd854fb3154. 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/TCACN1653004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e70d184b46c23ee6a8922e125cde4d9cc67529b751d1d97d3e0283cc420a5a. 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/TCACN1653014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c958c1b133a9b1bfa8c88ca2cdcab6eee306d09a03c84bcee58e5d176cb1e. 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/TCACN1653015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f6661044836f550b50fc8c9c440b2b622be501899e8f4b9e72acd26d06cf8b. 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/TCACN1653018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc7272164abf08b9de640f9dbe9d182fc1fac39e7aa3148c035e057ae5130c3. 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/CH0279710001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bbdd2b10ea8dff269ca85a2fe35e41ae5638418c2ba1678be57dc45ab6c43c. 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/CH0279710021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73d7f0aab1112c5dc9ecec01286bd4ab668660d5d5bc509ce75a0e1e1340665. 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/CH0279710041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be80f74bf929fc010d25d2d08fe8634f0fa63c9d41eed1d8941f0caa608007. 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/CH0279710022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb7ae5e42b90521367fc523210fea4d550152143bc7ddbdd8080b33165c300a. 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/CH0279710043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6db99259e3e56d10f299ccdf66ca8634f22c8a4e1842178c46497ef2603bd2. 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/CH0279710024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef02d4426417b2ef75dbceea65c4d67c60a62b21f8417694bd50b0dcf92f56. 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/CH0279710025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76baaf2b563c4fd6f58957cc3799ee4f3e2e8db64853f5daad2aa8ad2e796db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH0279710006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e0390989002e7b3ea4fbd06823ba6e67b719746165f57c38bb5750cce2f48. 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/CH0279710046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3a8314eb865332562e6007a71513143013208d2e8c132223c8aabd35f0d80. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH0279710008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9501ffa28316ffb8c368f2013f0fc8a49bd9ae585d2e986115bc8b17e41ec638. 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/CH0279710030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c9cf437d556c39802dd5341ab217b543bd00a8ca5e6f51d7da82244a574bda. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0279710011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9cccac5d27a4dce76c8194bb3fdc48dfbaff13192d8fd739bfa2b42a3749d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH0279710031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235113e82251bc83f19fe1201e51d8dffe52dfca353c36034e5c05416cbfaf5c. 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/CH0279710012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbd1f2adfca704a041845a22a8be495f6cb2becd88930e3a4ac027f09b5b96e. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/CH0279710032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767b3459b1963701597ea9284e4c8f9dab30185a75c3fc5870101010ddbd03e3. 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/CH0279710034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590a835e502528f063b676d957f799ecfafe95ba285d6cf780214ee453e2ea5a. 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/CH0279710035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c65afbc33397281572deefb2c2b5eb7be1c9cf9578d3bf9e507e1c7feac445. 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/CH0279710016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158332a4f2075e5736bde33e4c24a29761537c78049879a7c7ee82494ba1cb20. 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/CH0279710017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b5b05661a82ee6ad2bd1d302b5dcf5af576e99cb145b4210a5af44d7a78322. 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/CH0279710019.