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 0x99e91ade380c577c468d0d9da30f872852fdaa2cbc552b5e840fe6a11d5967d6. 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/69cd4478-4d5e-4c5e-a7c8-3e6688cb9215.json and https://artists.proofprofile.net/proofs/artist/69cd4478-4d5e-4c5e-a7c8-3e6688cb9215.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 0x6afd0ff9027cff8a361625ac747aa5f024b4d9a3e2b662a614a3ec7e791062a0. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ITM161302694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392a76744f6871f7b15ba6ebb3abab152d07746cce738db70b963e12fd62657. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ITM161302698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384ddb3cb1035ede268516f286a263ca0e5f40b434151572baa9cb6e1e06d8b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITM161302700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d1d02f3db4fe7413c46131557686ba9f064f45bcc734aee8064f4a9d4424ac. 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/ITM161302702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d6cee51438c801302c6a3fce79fbdf8e6828b853dad17f8e07f62d926123e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITM161302705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21ed8af3544f33133315198990cf389062fae0c16b68d2fd2336b7b7eaafc51. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:07:25Z), 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/ITM161302707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6c1bb7047250d90cb9b15957b5a67af892866be79d262ed8463830e4479ef. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:09Z), 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/ITM161302709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cd9b381c4448644880140dc821036b33fcdd2d581e876e02462861a3a49b08. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITM161302719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f50e4587d2a7d10f481a2985bfee5d1a596754b8e4418da9dd89c58e38644aa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITM161603836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e618eced3674eaf96be25ebb22eeca92ee888f825b3ab43d3d4ccaf7c06d98. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:46Z), 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/ITM161603839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac3049f37a1c48ba08d19c5c1b09b0684858b69f72ec2898423af97c2ba8a41. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITM161603842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fe63b44481a4374f2f0a068bc82accee2ddf8cc6f7be668b2d258fcd14ce04. 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/ITM161603845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff07ab547a9ff71c192056e3a685d65a5cd006b32e9b42e3a7497a325f3478f. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/ITM161603848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff650687e8dd2602f0b510a5ba0207a38400cd4c394a8927c279cda28f31e06. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITM161603851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea0ab62b280f2eec5dfebadf928b2dfdf5bda8625a8780fb952f98bda413c6e. 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/ITM161603854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f584217d548dd8186efa8c74d570ab6364c2ce9b5262994fababa8ad20d798. 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/ITM161603863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc422460a3ba2e8c650fb900b8b0b10dd7d1c7c50c3fbc4d8b580c07edeb4f69b. 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/ITM161603866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf601c1b682a91f8e0d96df60e89eaf7be4ec06dbbc14d4f7e51ea93ae64e722. 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/ITM161603869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded4309ea85a9cfb437dd473fa5608ee404fee8e74eb9067d1e0671aa011b737. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITM161603872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449c95ec902592a5aa2f1a01a552f40cd64dd7f99bb020fb847f429c8a7bd10c. 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/ITM161705063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0ba557677f90d29e2c3a5914e195eeb93d7c62484f38992b1bcc8844b1a190. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:07:07Z), 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/ITM161705072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f29b9863fa4bba015274e98ab84c661343bc611d7d35ecc840f5a4ecb011d9a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITM161705076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec139124589b51ef45594a6a8857ac221bc758b6f82dbada700813114ce55680. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/ITM161705080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaec4735577f79d0efc7a40f6edd836bf117f9a67792f8a87e2a4fc748db4656. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITM161705083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ac4752d2c31918cf6dfe3265e56271b689b5f2b26efc14cfb05eb171bc9f3. 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/ITM161705085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb831cf08a2acc4877d125a8c2d1ba862bce7adc2b581ce8b5b5d1a6c5a7760. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITM161705089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c204551b83ea235bc9027ec9df55e64dbb4fd7e6ff7c1dd9912f69d95b5c72. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/ITM161705091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7338115b1cafa42107f2569cd987ee896891e46997f9ca1d6f23a4c16b58713. 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/ITM161705094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828cab8802c3e99664580e7ef4eb126df9303812030ae671b507db1dfc6a35da. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITM161705096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d58feaef0f5c1db8d1b36952c5ed9125c67ec8380a212e8ca64c5554a3606fb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITM161705099.