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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 0xc281c867ed2bad7afad436f75717452e5b7c97001f9d942db910f3a816d22e7e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84c37200-e0bb-4859-a9cb-408b59616b1a.json and https://artists.proofprofile.net/proofs/artist/84c37200-e0bb-4859-a9cb-408b59616b1a.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 0xeefef3595b2c217e5d8325a4b7b24e9798194d20537f5e3f65d4edd077b053b9. 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/USWB11301281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef5126e8ea2b417dc875beb1315d223146a68d1f53d5a2d2ef0e54e2d2a6dd. 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/USWB11301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c747180ad790ab6624cb3e4ffea7ee25de50944e55c6caa69e937607edb582. 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/USWB11301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9a8199cdf4439a09a88beda2abfc3f74bdf88aa59f37c0c53778e9cc880000. 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/USWB11301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6bd062aedb2b80e717cead76aa94f770f9710266f655ac3b28f74320f1afbc. 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/USWB11301515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01aac3fc30ef9b01cb4a33f44bc5083b0521df123e5b91b6c1f98d170e9c6a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USWB11301516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1295103b7c185493355acce4a7926dc7a5792390c9ff6193e9a5080c4a929f0a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWB11301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b21cb800ff1dc9a06e55c5f0a1191cf3c21fae7d2188da925e04cc607bf0c9. 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/USWB11301518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026b10d6a1fdcae6a44fa2d96945032d4d8e958462f0dd47462f76a1be76340. 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/USWB11301519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792c98e411f5fe24e1e25998e53790fb086e5d517aa7cd9731b1b3641744282. 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/USWB11301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3c525c8733ea5ea9ed381bc59764abd8f97a2964e5dd0e5dee6e62ad0b58b. 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/USWB11301522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2dbdc0ebce241634e11bba0f288a36cf9cd87efd4ddfc6b7b9afc835517056. 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/USWB11301523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefef3595b2c217e5d8325a4b7b24e9798194d20537f5e3f65d4edd077b053b9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USWB11301281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef5126e8ea2b417dc875beb1315d223146a68d1f53d5a2d2ef0e54e2d2a6dd. 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/USWB11301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c747180ad790ab6624cb3e4ffea7ee25de50944e55c6caa69e937607edb582. 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/USWB11301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9a8199cdf4439a09a88beda2abfc3f74bdf88aa59f37c0c53778e9cc880000. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USWB11301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6bd062aedb2b80e717cead76aa94f770f9710266f655ac3b28f74320f1afbc. 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/USWB11301515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01aac3fc30ef9b01cb4a33f44bc5083b0521df123e5b91b6c1f98d170e9c6a. 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/USWB11301516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1295103b7c185493355acce4a7926dc7a5792390c9ff6193e9a5080c4a929f0a. 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/USWB11301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b21cb800ff1dc9a06e55c5f0a1191cf3c21fae7d2188da925e04cc607bf0c9. 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/USWB11301518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026b10d6a1fdcae6a44fa2d96945032d4d8e958462f0dd47462f76a1be76340. 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/USWB11301519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792c98e411f5fe24e1e25998e53790fb086e5d517aa7cd9731b1b3641744282. 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/USWB11301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fca6966b303afb429182574c0453cf181f76e7acc3406dd8ad4e35b1b775d9. 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/USHM21143807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eb94d4437f905443bb54099f56897f4adace6bb6313fb20ef6f85584a511d9. 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/USHM21143809.