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 0xd21559529278be3fb409ef2a453ae596f6e3ff72736f594527b0083753204951. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6ac12de-67c9-4c60-b03d-41994f33193e.json and https://artists.proofprofile.net/proofs/artist/f6ac12de-67c9-4c60-b03d-41994f33193e.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 0xe00cb918d1d41dce5bfaabb2eeac5b12072fe9aa3308dadb4c784cbfdbe9f845. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA52011397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e91bf98c1ea69d432b6d1b4f2e624ad9db325eba3c67247504ff846d9d38b0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZHN92094821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485991691accfa0d897b7cc18800e79e601d12ef35b466681cd0a3b5ca9de9e7. 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/TCAIG2471040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda7cb80684d96ee4d77fc2cfbd3b0c86621076754142802b32da2fdb798b5c0. 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/TCAHR2395881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ee2914ff14f4af218385b70b064f6dc988b3e16c0f3fa12aa601fed2ecde0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHY2436804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf34c15ff78144bb09aee91c75da514d150b32268f15f0033a1492e8752ef43. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:49Z), 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/TCAIP2408193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00776c89ac838d098b7f6a973aaddf15e75240d58a9296ed2e3435622bb920cd. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/TCAIR2466879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354f8afd12b2c3fe4d4991e48fb5ce4704ba95bf7d125a392e9938e7e624f13. 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/TCAIR2466904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3bb746b3c55b476b6733c606e0a5300c5f8afdba2e4ae2222f14fa5c2fc3d. 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/TCAIR2467363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e25066609b5ae30b07762f80054dca571c38ba2fdf9996aaf94a00b735f97. 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/TCAIS2467291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5122f0dce069d5f7a9e3df904642b7a38e496a2728bc586bfc38c88fb1f1df. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/TCAIU2456223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c87d0b8ff41ac7c6306e5f41158bbe3bd7e1881d0a6979be53eaf8e85ddbdc. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/TCAIU2456326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8a720ae6a6cb770899b0cd84346494e357df1c94528d8b185e3eb2182bc7f6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIV2456343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5080ca221a311dcd49e9004c1694eb90d56fd76841af33f72d588cb7a4acd8e9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:04:56Z), 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/TCAIU2456393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df903e2ee874636f9bd9b2d1fb5994e08f7fe313aa3ca5890c218ac8814d03. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:46:48Z), 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/TCAIU2456206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c87d0b8ff41ac7c6306e5f41158bbe3bd7e1881d0a6979be53eaf8e85ddbdc. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAIU2456326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a14a353d3a30c25d3671287e7dd6e57171ea22e800c6ab15fcee54fe3747a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAIU2456371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5080ca221a311dcd49e9004c1694eb90d56fd76841af33f72d588cb7a4acd8e9. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAIU2456393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b76fc73f7e77011d99eb28ec1de91576f98ae0853d122927e0fa7b64a63897. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:24Z), 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/AUGBT2489593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b426089d60cb0e98addf3881318caf553791a97175d1c6a20a6f40a90eb4fb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:13Z), 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/AUGBT2489606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ec278488985fc3107952d70b9c3daebf05699c78c5185abacfcc2f531c0a40. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUGBT2489613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef832d64223593f7c22170b91e60011d3988cd36f53687978fb779992317262. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUGBT2489622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea63e5f533e27e069c4b849e0069a33bb3b1056e83ff089a73872a3438e8aee. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/AUGBT2489624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4aa9e9b94e2febb604d3dc43e92d205083a1604567c460eabbb3d9fd0a4fb9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:33Z), 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/AUMEV2506641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04310a543215db732966935f89280ddc4b479fe586970b0e987a28d9970b2d. 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/AUMEV2515481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0722469269a647f0d60572143777497774d560f227f3b9b491c1afe53709fb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/AUMEV2515483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13163ada5e0f54642053b8aa1ff4399d54d68e35b975a89ec802a0e1e9c395cc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/AUMEV2515487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e01a2ce0a78c7ef6c01c6c0741a2965f85b199dbee8e3bd6083fef509cac826. 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/AUMEV2515488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4aa9e9b94e2febb604d3dc43e92d205083a1604567c460eabbb3d9fd0a4fb9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUMEV2506641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f616190c212742c19acecd3d7a93e6d41bdd0d5cd40af8db38d2196db870535. 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/AUMEV2562588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f616190c212742c19acecd3d7a93e6d41bdd0d5cd40af8db38d2196db870535. 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/AUMEV2562588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f31ae178c9c19fbcba998d40fa249642f62ee67e3feb0f3cbbcb76128569a1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/AUMEV2589347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0cd27733f48b80881b2c280e9093fd5e68a6b39c8a06268ed6c074a729992e. 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/AUGBT2546926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ddab52b588fd267a1f652f641af221adf6148bf2c32ea3a87b335c6caacd9e. 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/QZK6G2133204.