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 0x243a7b3e019652df744249056bcd93092d88a7b83a66d96acb02103fa2d55fe7. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9f72380-df00-45b2-9bfd-776968175cb0.json and https://artists.proofprofile.net/proofs/artist/f9f72380-df00-45b2-9bfd-776968175cb0.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 0x2404efd2fd0293053ffa351f131cd4aa25274bcda83b694430a1541370149a1d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA2L2161692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05204f2296e5125cf770c2484f5215b379d389dc236641b5ee957a6117123ee. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AEA2L2161693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab37ab96cfcf422f39cade47cf5db232714f682d378059e5f8e519e436f3b75. 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/AEA2L2161694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83e030ad9f0e90bdd9b7be664b4f2af82a415f13e64c022da5f26ac18ffa0b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:54Z), 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/AEA2L2161695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c13ba50ef45d43076889895a02671c73ad789c903f926a9ded3ad53161d3b75. 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/AEA2L2162723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b75324e2166bdae2a03b9608d7c0b088c6c13111f2aa1b3dc16499bd220ee. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTPX2596105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eddd0d6cb2cfec05b3f7e089a96083720e925388dbebaabbb93e9f77d55f844. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTPX2595954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a007000d2ae1a5b8388caaea87e677a0a1a6cc16e0a6025771f888c62e8800. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTPX2578399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e0d56fd362ef685f879fa210a022d3a8bbb5e9c298b167cbbec1e93c4efe12. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTPX2578322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c97870d4063c012172e16e9ed9490a2459238438e6241b217a15427295e5de1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:48:12Z), 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/QZTPX2581759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4867db00e1f75d02a9fb73e5cef63b7a8d65c364a73137ac8afd63cd9616b6. 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/QZTVM2506984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf6f81c3ed4ea3c564db53afb7168fe5a358ddb23256f8ce24105b4c6d35c18. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:58Z), 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/QZTPX2588305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b7e2d07da765239431b32395e899f8a575c66379058e8076ce48605651d8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTVM2528999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bcb6bb23ce96d8c625a2087d06566efc71c61abbeb0294d32e02046a6a162. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2517243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2047d403bf9ad7b53e62f5d42b70e8308bbd735b1f565fc0a08b98fc1b5dffab. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:07:29Z), 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/QZTVM2529312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4594ab50e7cdef7e377faaa508e70d25028595824c690a376b72dbc48b86701. 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/QZTVM2523068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b2b79620db08eac434d672d6b22070d7508695af607fcadd7940bf2636e82c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTVM2523076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd927da2e373d6fe92d7e82a1548c9332411a3f75783d15fd903c7268864aa9d4. 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/QZTVM2534454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956833f26e218316f03f26429aff0b957e82bf87d83bef8b2d199532f9a8f4fb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2534464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53123d9bf09cbd97c15edb216ae03ed9e8607a11ba1205946a79f5264e4cb1. 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/QZTVM2533011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f1be39a3fece69597bba3099be62b70ec5b5835fb5bfc49c67f78dfb1c08c4. 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/QZTVM2546955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364714b0058d0c80ada1ada465bed8354a6d9b060febaed3c79b04dd9086fdd0. 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/QZTVM2550057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb9a46d4ccad95ac5cc89df591a2ed1d0bfa5c6ba10dc8b1513c84fe862b20. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2550025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d427eb2730ce3aca5f7178ba9360df614d6d671cae1f499d23bdc95a4b83ae3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTVM2551013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e57fee58650ab52449ea1cc56e03bbe3e78d6a0522296c01c26e1698b6cd9f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTVM2563259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b05c53d90c748802294ec36735b898e2f5fee06bd64014e0e8405490a142b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTVM2564906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4a45d9a42a1bcf99ac18d9ded1ebeea125f2c4c0c44b515c99bc00cff8ed13. 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/QZTVM2566208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4129ec39a6abc16f7f2333c28bd3569281ee58e5ec2d526166a57aa8fca2fe82. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTVM2579614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c7e229aad737da1040c1b99616e3dc3e0867f7ad903bcf3a1636662e230e1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTVM2590574.