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 0xbfc3df258e7144dba3f2e7aa7221beca11fe150f034f7f37645418e00e7147f6. 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/ec089ff4-cf70-418b-b80a-29d1f7cca19e.json and https://artists.proofprofile.net/proofs/artist/ec089ff4-cf70-418b-b80a-29d1f7cca19e.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 0x9c66bb437115323107219758fd870b4a90009d1b65ae47d3a93b819f509ef6f5. 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/CH7812359380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f3235c12edf10de71f2bcd5221d353f65d6f15c090b504a85478bcd3f154f. 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/DEZC62288640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b461140cc41763c3e0a475b5f3f5218a2a044af98651821c4e67b8d21001. 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/CH7812349007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa89d2159cda1f401a84268b4b0d40b7d0ee4d3bd89ce36e87cce47f62fd813e. 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/CH7812346691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f90c4448aa355b233ec54b7ff51d1fef53ae53bc64c8a880eff144eb1ecb58. 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/CH7812354830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee7f29c70e537bbaea74ec305aeca565ef7324539d31858392ba1a14058933. 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/CH7812356948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66bb437115323107219758fd870b4a90009d1b65ae47d3a93b819f509ef6f5. 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/CH7812359380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cebfe1d6d912ca92674a4eead9882b859d8fc0e855235aa250332bbdb546a1. 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/CH7812370047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c557ef545d1a690735d063502465d2591cf4aa961f2381b3288c45c53b1270. 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/CH7812370048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa896599cc4062ae9d3780facf474cd1d05b4aab365b717297f080553ca8aadd. 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/CH7812362716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df417e023953fb641587262e65149b414a1bd8af4cdea520a9abf881088424. 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/CH7812368256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ba8764431805c3520fa3fd054e9f952360bc71c0575f121b1c384674c4a85. 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/CH7812370049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a94fa67842d82ca852516fbd5edae7fb68e946fd605a462fb9f02775047563a. 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/CH7812366887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13020ea3b70387221e69225c7221f9d5fc7b005751a698de7535892e15b1ac8e. 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/CH7812370051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca37a7f60ae1cdcccd888d1f34f7fca3fb982f1f52e06d90a3eadce923b5b073. 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/DEA622404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfbd2f22ffd6109c824f3b43789cfe60e4c5741869aa34bbd23d9d2fff967f5. 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/DEA622403576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44005ec4d3c6492c417950d3e2f6016ce437bc8c3e4a355dcb3081af66e78e1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA612500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569346b8a7d145221388120817e1c931b04402857a2a6c6f34f23578cf20da05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA612500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9368d651edcfea2a1598dc1ef0484a010306d118042b2ed42dd827c6cb4bac51. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEA612400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6b801808d877ec14140b722fdf2ee1d70af858f233a484c4be8299de2e1097. 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/DEA612500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0123e27d79b9fcc2121056c1bf9a2962f0c878158b3b89f2047e0b1ba39d9bd. 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/DEA612500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9368d651edcfea2a1598dc1ef0484a010306d118042b2ed42dd827c6cb4bac51. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA612400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca37a7f60ae1cdcccd888d1f34f7fca3fb982f1f52e06d90a3eadce923b5b073. 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/DEA622404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfbd2f22ffd6109c824f3b43789cfe60e4c5741869aa34bbd23d9d2fff967f5. 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/DEA622403576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfbd2f22ffd6109c824f3b43789cfe60e4c5741869aa34bbd23d9d2fff967f5. 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/DEA622403576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca37a7f60ae1cdcccd888d1f34f7fca3fb982f1f52e06d90a3eadce923b5b073. 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/DEA622404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df417e023953fb641587262e65149b414a1bd8af4cdea520a9abf881088424. 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/CH7812368256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a94fa67842d82ca852516fbd5edae7fb68e946fd605a462fb9f02775047563a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:42:46Z), 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/CH7812366887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa896599cc4062ae9d3780facf474cd1d05b4aab365b717297f080553ca8aadd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH7812362716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee7f29c70e537bbaea74ec305aeca565ef7324539d31858392ba1a14058933. 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/CH7812356948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f90c4448aa355b233ec54b7ff51d1fef53ae53bc64c8a880eff144eb1ecb58. 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/CH7812354830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b461140cc41763c3e0a475b5f3f5218a2a044af98651821c4e67b8d21001. 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/CH7812349007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa89d2159cda1f401a84268b4b0d40b7d0ee4d3bd89ce36e87cce47f62fd813e. 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/CH7812346691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ffec5c138778d494bccfbfb30e8a995b901843f72e4f957a97550ac0c2bf52. 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/DEZC62266912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba083e42e7289a5fb0164c4209535ed658c95b3320f26f88a6b53e4d62e32ec0. 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/DEZC62103212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d225c9d63bdadb933b707d36348c88e1178c014e0d633ec1e899e069ebef4b. 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/DEA622401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850c75ec4ed53f75536e633d85f03bab78aa920b5ba24865bb8358be8c77a3d9. 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/DEA622401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9f543b6645e092029ba909be54aef7f82a8135ce6e33ff487e88c294ef14d6. 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/DEA622402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fdac80606f115b8771c968e247ce36e37cbcd89a382816cd4ae45708d29437. 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/DEA622402006.