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 0x4ab2a4dcc4fd1a89090b46ee7e9df8731017ba30304abbe446b61d3547c87600. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7abdf34-038a-4858-988a-ae1e69fb14d5.json and https://artists.proofprofile.net/proofs/artist/d7abdf34-038a-4858-988a-ae1e69fb14d5.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 0x6615013cce5d439ec822c457b97bf102f6c1041c85dd7a4cd2fe1fd1b147d7d6. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZW9K2471841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b4fa76dcd9de40faa34b82c9de60e2acb2a6a8bd023720593bd501be3ac2e1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZW9L2415223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6201760acf6da6c6f199a942d7aac2081250d731a2c8a58acc6c5b2a63a4b4a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZW9L2415224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef442ccec2c2e3310ffdaab365bd87d816fb3f5310e8e0b67c91a20a85bff86. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9L2434893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec598e6b2f5e3ad1529fa72cb456d6b6e41b9af60494bfaa028947ec2816a2a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:37:59Z), 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/QZW9L2434895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438e7d3f64f35bc345d5fb70eb0c0af04da63340a17a238ace0cb5b45662a6c1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:41Z), 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/QZW9L2470853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103892a38e4ec70c65c91585812aef7bbaf0ad362c3a160b2457fcde831c20ec. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZW9L2470844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeee4993bb4190a29554641e931b5697548e4b60fb9efdfd2bb141ce5e9facb7. 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/QZW9L2470847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af0646cb6e60021718569bde6c7d0094f8b1b4a8246fe2994752ad4673c634f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZW9M2433083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec0aed4de3700dfa35c74b188665fb808c1c2c6ad29556548886cff000da0b5. 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/US7VG2510809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd98925eda2fbd93757381aa0639b48ddcf14df670644785695760bccbb244. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/US7VG2552963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3d5e5c927e6dd5741ab213c085fb0ac87e905691ecb562a881b2d9ea53e1b. 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/US7VG2556061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aed3366f394de8960e22cb219c226dc5b493360aabd5e5b3f86378d56258e15. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA3A2182510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48311c4160afa41e6b8d15a301d0698c4dd390571d68faff7e57c5800b19d6c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA3A2125475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5253d920e789236f54e7e4e673c65818a5460a7242dfdb1180fbe49df40bf1. 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/AEA3A2163414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe896ce4345ad4c20edeafbb0bb1f0a3e18619882224c847d5fc0797c11e04e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/AEA3A2113093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a495faf86b068f2ea0137ea908aa2f9374bd780ae803758f246e6494714f65. 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/AEA3A2169310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1cc56372a54e7c9a2627e660d6c59929d10035e528d6c72631ac19704580e2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AEA3A2139174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a5b1d9b06f69efbd6c87a2d95b9f7fc371015c09f1bd7b91726a288889e90. 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/AEA3A2180975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db2aa13990d6aca582ea608e60fccb4d4d26fbd3d27dc5ab76bdc98b674b526. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:41Z), 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/AEA3A2159620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7072a0f475bca8e95a7ca70a376df8113ad99ee2d4c9c9cdbf854547b20a12. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:50Z), 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/AEA3A2132789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56a93c1f3dc4f39dd441b9444122d474c611e1d88d23aca54fc724907e5fa0. 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/AEA3A2129691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7cd4b98793340b7060e6a487d536f6f5f332477436976fb5dba14f45431819. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:07:18Z), 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/AEA3A2127294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f2084b370bbd40afb290f11bff4cf0c12728b86f6f20f167a433f413e3afa5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:37Z), 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/AEA3A2167836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda93384d36eaa3b79294c2d5d0d16ce7b60d1a40c25c07da8b6eeaa5f91c845. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:01Z), 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/GXBAV2167388.