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 0xaad8e70af08ed8c3ad2997dd1d919205bdd062a43184a15c496db2327159ddd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68e7cda7-4ec7-4310-8cb9-32cf76337665.json and https://artists.proofprofile.net/proofs/artist/68e7cda7-4ec7-4310-8cb9-32cf76337665.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 0xf716f6e5c82cba22281a2683ca2bf29d769d67bc2404a98657944730313c1593. 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/PLC062394811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db9ac6584a6709bd995dfd0272b60f32c279de9e297efe8d1690597369228d. 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/PLC062394812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f72f51e529ee02e5cb3ecc746f04e6367ce5031089b5018cc6985d00e6ae4f. 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/PLC062394813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec5a5957fceeef53466ff3e7b47c5109979075090950e6329c8b8a05ccf4b0e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062394814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91c203da7c8529363e46677a9b53843392c5199b9b0f824c352c56f49ebeb5b. 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/PLC062394816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb132761f9290ea65be2356cf94914c57771bd13875dc06ec6a81ae2e2ae92e4. 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/PLC062394817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb38c3722dde7d6a449078a3610bab40af4fb318ccef0b803f695b966c6d13f. 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/PLC062394818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd716f8d71c397011b6e1c85127ebbb345f622fc5eea9aed486f8f6d8ba954af1. 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/PLC062394819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374564c25bd8aa52a2e989f1af7b1056c3fb1c5827099104c8c15e028cb95a99. 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/PLC062394820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29681e45cbc9d187a1fdfa326fb98621be38e7a72ca38ac445d9c0a6095597b3. 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/PLC062394821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503452594081d1628286019e843a10311d58a47252193e773a0dc80346ed96c. 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/PLC062393447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d119dbb5b18df21da4eeb8b40d616b1abfd188766f9e21666a7f8660bf0f369. 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/PLC062394824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f09234181f6547fe9b23ea118c18d06b2c6a1ab4bde08f6e5609c4cbf27b0d4. 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/PLC062394827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611afc2ff64394d838382cb9ced94fbfce20445c83e2cee112eff46d3f867a04. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:43Z), 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/PLC062410809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e8278c16e43b752896ef38f0c60f0b66fdff0a94aaba6663be5b208d17cc0b. 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/DGA062403087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0159a6823df5b4447b8e9d891472aaf5007e861c6c1a01453cd3d95e7775632. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DGA0M2436343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd665ad7e876e8c0d292772a67ceed7504d3c526015a9668d146d05f447206c1b. 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/DGA0Q2480791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ae96cd151a499840f7a3bca0d0a1a1dc4c5261f2261c747f0522edb00b5156. 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/DGA0Q2480792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff9fe15a637d10d9fdbf4e8706635458523ae77e59b47d292e9180165a68da0. 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/DGA0Q2480793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe326372b56893c10ec41c8587be693d5fb06903035018b86e34588fe934addb. 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/DGA0Q2480795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947dc0608f2fd8b3efbce927ee1888800797af892a98b5f35eb96b15b0f52082. 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/PLC062409875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114683b3f3cd3b7dce15d8b5c8382ec571ccac2af949524cd8afbfabd4c00449. 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/DGA0Q2480797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d985f1b1da6a126b9de2aa8ea476d03640fc77e1c6ba8fcddbdf8d3ddacf2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2480798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421343d704fef0d9288179ed516665e9b0131748072df6b0d298e6efcc0cd12. 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/DGA0Q2480799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bcec224226bc351be27605f6b9f8530c2d7c96fbcb3686fc9355fd4b6b04fa. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2480800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73463edd6591e7984a8df041ff6477a4c5113270e0d410b34e01fa882306335. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2480801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0159a6823df5b4447b8e9d891472aaf5007e861c6c1a01453cd3d95e7775632. 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/DGA0M2436343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b4f2fd305d68a66b0abcb0b31ab3f3c6e0ac657134b8b09e3fbb1ce237291. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2480802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e8278c16e43b752896ef38f0c60f0b66fdff0a94aaba6663be5b208d17cc0b. 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/DGA062403087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9abdc18ca27bd2e5693bab815b9a7a0008dbf9ff3cdaa1cdd39be111a6ca5. 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/DGA0Q2480803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b68e5ba93a69258684a0eabf3215ceb06dfe53ab0bb028c0911f1ea1f2e872c. 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/DGA0Q2480804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe705acaa51d5e5511b98da10cb220c1eb2a2a891d8ba8cbc7bd99c5f19548ef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2480806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ab19b78cd369737c16918a161a24882774eb49af1876b4ec07405b9577d6d. 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/PLC062375292.