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 0xfcc1c5b456bd80c1457bbb712bba2f80f4ba54c4ead70bf35dbb0f8c1adb1c79. 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/63eeb09b-5c65-4a8b-b3ac-f04957cefc0a.json and https://artists.proofprofile.net/proofs/artist/63eeb09b-5c65-4a8b-b3ac-f04957cefc0a.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 0xfd6a7b9013e6b27efa0ed31dfee6b797b1b40ead290c38c7dc8d6864d13c48da. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA062034974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c773674d6a0df5d96479fa2229942230712acbe8657084763c31c66a973836. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA062034975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a4f1896559c2ece9b80ea6aa6bed44dcc802874cce71be2f01a3c2ee04a6b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA062034976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb28bb794869adb884287544ecff1fb54c6ab363eb456f9c5baeba6b21ff4b4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AUMEV2157583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d1fde8ee48c18d25a20df155caa7773493bb6182374e9101666e065aa2017. 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/FRX202210005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295d2464cc6f41205aae3a2a80695e258f8409f291183e9cd9ef7bd2fa8f8884. 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/FRX202210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f485db5dbd0c7913aa6fde09cbbc42fb4f1e3dbc238953c805ad61cb644eef. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRX202210008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d4fba25e6939a5c837dca678b8692c4fcf242d752ab8cff0183f266fec212c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:31:35Z), 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/FRX202210014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7836a29c8eba982a2e451432136a81f1999cf8567498e693d305892857e73b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX202210015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06a607da606b434b294224e7848d68a4cb670918e0e8ee1f268aef0ec533f5. 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/FRX202210016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339708a742245651782d707d9a556bd728fd2910b14a5ca8e01ee8fcc170f38b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:05Z), 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/FRX202210017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1103fade3833979a42298087cf998072e710a84c37debb8e3e0a40ce2f0be70. 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/FRX202210018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745fbf9f16cc1b510318a32c627703d02362b00708c004f8fe4dc8669ed9fa9f. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:54Z), 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/FRX202210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b33c35aa4052aac7416d911821da82b8318ebb3e5146cf44138b27f7839804f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX202210021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337dee399422bc979f4464e16e2d7d0ce6d3128f344feaed91aeac87cebea677. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX202210022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c2d0dd93364c3af72623dcfaae92e6fc504f8a4a35240aad03401b6c84b793. 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/DGA072273497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9c4628a7ec49b597b505ce548ecdceb8bfad3a696adb4fb986344e3b15423c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA082249958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bdf5d7b60f31cd8598696cacb44c9816a9a612c0c8ac1afff1efa3547f4b91. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA082249961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890d91c84f5ec4ec3da2b45de9e9269451930bf464933631b46756ea9842a125. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA082249962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085e53c3a75c0180c9732f5af84bb33039989330507544c070e4526d2f5c062. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA082249963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee4668e5e213f6309ab17462c26959286638246e9230474d260628f152ba3ab. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA082249964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2171ace58c8a94dbfe2d4ec6f2e03c70a4c388fb02c49f2d951d475ad5cf4ae8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR2X42345795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc632e50cf928979e140479aa36cd1d22bec2d6208f4007ac30f7806dcd78c3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA072344766.