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 0x7ee9c7797ec9168673a421019d074e61a11487128543da3f83176cc61bda30a8. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9706e492-0cf7-4ee9-a139-56528e595379.json and https://artists.proofprofile.net/proofs/artist/9706e492-0cf7-4ee9-a139-56528e595379.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 0x45b397b484cbae37355e0a8310d1fdfb2ea4919c1e15bfe091b5e33d527b4d2b. 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/QZK6P2322510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59a90f0340f5422144dbcd1326c4eb283a8c91fdeaf4996df64f5993392cab0. 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/QZK6K2360164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc703f48d1f0ebe8a49c88abf5a46cd044cf628ba79b83ec2ed79452b0e70da. 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/QZHN92382592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe87df0508b4a00154d623bd14c9cff0d89935d6b78be8259ae3407c3690a14. 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/QZK6K2360165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129985b5a5e84ff15e033b14a0b4a8054de8b316eaa3bd50662e9b1acb0a17c7. 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/QZHNC2337253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80af67d2c2978fbf43e8841b573d9597752c9ed8f44091ad4fb75384c73b01. 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/QZNWT2278455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f443e6a59afecf72b4ce02ce8a05e75cadb81d7d3f3b065452a24b26f2bff0. 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/QZK6K2360166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fa6a5c3e7089f5575b70ebcd156fd07b7952fee0e788d6f0d6953f5361ba58. 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/QZK6K2360167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a2bc4457a7df5b6e1986176b2ded31169a48902d73ceeb6ea62cc1e9fe4a9. 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/QZNMZ2222717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e4673c3f482568fcb54db4c6ed10a7d822207d8f0885f1bf437c5ea4a39ea4. 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/QZNMZ2222718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb36e82154cb4ee9674a85523c0773386cd310e49f0405c3b4435c0c024c4f2. 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/QZNMZ2253722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93f38c666b7827a31704a25264321d3f00b0becb5d298932813a31f954e9e8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZNN22391708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ee76aafc4057d81dc4c8934f1da0ce2df20e4d2359ba4c1b9646e756771a4. 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/QZL382455218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073f3fc785b5d6325d621a3e8eff2df39da8e3e8ccfcd0d8b1af80f8c564636. 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/QZL382455219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d7e4338e0f8ac63d9c5f77c7ec32d76c3648d5914aaac69674a5f059a08368. 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/QZL382455220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e54c5864a6ec64e6637dd97128e186979aacc8945c50f627d070375a37c05. 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/QZNN22364152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccdc51f6ed06f72f9438fb9ace04d584dda44e2e5fe0268202b46810deb5558. 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/QZNN32309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e89f9feab0114002e0c2d62513b83ebe4feca83d31c81b5ff178162d63133. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZL382455221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeeecb4ba002612db978529a3f9504a75ce9341ab39af72684673756e1ea47f. 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/QZL382455222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c9a9818c51466eec9b9a660fb6e35d482b8f4c6090c60b763ebba0f2a649a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZL382450427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f38ff5b2e9dcb6eb2aed22d23b874448c1090c50c11b5338b7ed248480d90. 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/QZL382455224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fdd0f273e4dce097c427a4e89472cfe00c0e9dc9303191999fcf2ccaa7860. 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/QZDA62385448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2be68f340292d001537ad9ba94fed614d711037309a740d7522328afb9dc1e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZDA62385449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4465143e3f5949f205b2bcce2e930c027a6129d8c41cad27ca2ee3d9f96fb7. 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/QZDA62321420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39700db856f543f173d514efa2816c4ceeae3422c7470ba406da77ce0f8d4d. 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/QZDA62385450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd1eef2fcac62b811089a8c4838f04c60f9bfd1115be71c2cf238d315682f4b. 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/QZNMT2472708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4465143e3f5949f205b2bcce2e930c027a6129d8c41cad27ca2ee3d9f96fb7. 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/QZDA62321420.