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 0xb7d24063a0c268b33a7513b236b17e4b2da94869c967e1e52529c7278c0d95fc. 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/8fd5685a-8fda-4cd6-8bcf-78bb3f6c4467.json and https://artists.proofprofile.net/proofs/artist/8fd5685a-8fda-4cd6-8bcf-78bb3f6c4467.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 0xf2748f041350d7d0fb12c40bb92f088a234a70097111e0b259e090513ccc0e2b. 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/GXD7V2238501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308285f2628e1a17ff971f37f8dd02f249b7649b64eed1d087c1d402044de92. 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/GXD7V2225615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4af3d040dcea6303a7f402983da3d65e4b55f381fd6f240a79d3b13629f6622. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXD7V2280300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88616d86f3274c20856a3608d04ff4b484960e78d6663ca4aaf99781c115d1a. 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/GXD7V2271713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf34a1c9e423d89bd573f3cac7067b2dd8393bc87b3bf4e8d26dce62b9e37af5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXD7V2207334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01382b31bb7ad7b191c5322195f2ee51c561378c9c3279e906f2adaed842be3c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GXD7V2274274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac16dccc68fa5f16a4377c898322dca52c130b1dcf037cec54058aae7badff87. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GXD7V2224196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad82fc88710cf07f913886fc37d7ee2b55fdaa184ff8df98fb60e4416ccc8983. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:21Z), 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/GXD7V2214797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c214c9c7d8a1a678fb5e62373f0b537b53fc3979c7fc1af45e7598ae9f323ef. 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/GXD7V2276050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa765577521a1bd33d8849eab7cd8c5ec4df329637baec40d5995b908169bb83e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GXD7V2216572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9ee67f19fbea599a1b66cc9c5fcfe3aecb685188b2aa3afbea7a2092a43c14. 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/GXD7V2245030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da4730b395397717ad024aa67e865d3774ca271d63313990af24afd84f1bc15. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:02Z), 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/AEA3A2401787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f6131e2e1af933fab2cc44978205f03988f708b65e57b38bc3330fa03bcceb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AEA3A2401785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e89e41c01b5bf2913f1be49cdf79eb6f53091d49f545686a8472e08ec060f9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AEA3A2401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce65b9542d5ca80b211f98582cd88f8f666191279e08732b8a2eccf1412b81. 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/AEA3A2401783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492cdc2d216e5b21a57971cf1348f30ee892d6494726bdc426a4a2304040337d. 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/GXBAV2504320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4e4d837b5a6e7df990e782cad37101f6c374619c69144f257bb1bedd7a8d6b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GXBAV2545079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c921f14cdcf2332e3a95fd614d88b46e03259c790ae2ddc941f9a5f87b3ac8f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:06Z), 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/GXBAV2587687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983e5a7efc7b02f26d5c44f92a02c7232b46ca67d35e6bc1e112ceee2bdeadba. 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/GXBAV2568368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6df025d61ab18ff9d30febf696c0c1c258046e52972cfc2d54c168a12747523. 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/GXBAV2533926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e279e4de0d3de35583e90d4653547e615575c766b53213c30f34d38935a4c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:19Z), 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/GXBAV2564656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c9e2d64f6facb43dd192a03a38558e5bcee0ca8571685389412035d25d022. 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/GXBAV2582480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6810928e1617191edac1be45229a12af3e863502071fbd21cb8ce27501d4b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GXBAV2506796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664150978e524a1b44640c4b986dbcd639c99221d2d0ebac119f2c0d7a32f53d. 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/GXBAV2529480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e2f445f178101e22069a7a570cef1804b98f094433d4c794833937269a7b13. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:49Z), 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/GXBAV2587681.