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 0x2a8e7d92875d2a71d22f9f4aaef5484197aa35e6e1082505a0ee7c9a6f4c8e9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9de1ab86-bf14-4571-a16a-74f5ed7499d1.json and https://artists.proofprofile.net/proofs/artist/9de1ab86-bf14-4571-a16a-74f5ed7499d1.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 0xe832ee58a3790400acc7475a20e9698a6da1f59a74551d2d39677cdbaccb464f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCACI1576088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8075e59af44c35e05a907d288fe874a9eb69303a865ec667cfa735f42e3ae5d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52088200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5313241e9e6f9173f9d35e429651f497355eba91d691eb71daf4a7c2f9f080d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFZ21936018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7091a8a0c3e33ce554e54dfa65f6fed3e317e18a12a7f39db514a52827cad969. 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/QZFZ21936025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4ebb1ce93d42c2fc3c59d8bdb489bba51b0a75e9f62336f774a8c164a15afe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:16Z), 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/TCACS1643719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0cd501356c8dd493ed9a4252f00792e457b1126d03c6f8ac5a38da8ca1e5a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCACS1643720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354d5fc3a26b4364b78026b99d18996c45d248c7cd681fba014fa9b9646b409. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:47:55Z), 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/TCACS1643723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9216f904549b8298cdc86f29711cd2aa3018cb40fb378eda6a3627668fe6c3cf. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:45:45Z), 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/TCACS1643725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f516a2f47bd9526c9cee56ff4413c4ca437f21829cf196fc92a09eb0d084f37. 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/TCACS1643729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbde1efe28550ae13ccac0ea20b2aacfa7dc5bc90e1233ca5b14bb7fcd6be1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCACS1643731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e665ed396a515a29a9fa373c325e35a83c498e26768681ac0f6a1d0c735cb40. 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/TCACS1643733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e4be6b88e6e3d00b688835805e7c93a5c4f06f22202c629d4b9a3337f9a2df. 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/TCADG1746357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23274abfc374b3d0a6a1ace51486ec1513de4fc19b5040bb0899f39e60d5492. 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/QZFZ61938463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d8f8c84bd45aa249a97de354f264a092f5e750d12dfaf5262a3dbb11268cf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2005211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b397309976c542c50367ae739650451e3ec7eb146a024877dcf8f9990bb15a. 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/QZHNB2005212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffdf982ede9721a8921364abd8ec57dc0ac828801ac6eda68d0e477b2403abb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:33:06Z), 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/QZHNB2005216.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1245340d5e03bfe3306eb1e083f5c6e9e9acd7a6cff25574a79e9f107b6f4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZHNB2005208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ad2c04e25b3d5c92d3cdb343f521ab0b7bee250fe1235a9ebffd44e1f88751. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZHNB2005209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15e87a56120151f2b9807a8bfe0b3097f6b8493032a38a8edd25c0aa6160f62. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZHNB2005210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119463d5deb002f59d8112576cfc0166992f4110643dd83670591e5a38ed108f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZHNB2005213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28a2b1b914e69250308e8a713db4d36ec0cf15bcb3c2cbd0884c9ff0a8c02ee. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHNB2005214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b908c550edf358eb80b099630822a0e1331518590cfced6811e29c6e479f94. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZHNB2005215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b8bb6dc1a14590ff7fd1573479189de4721c8630243d4e564c1df099b95f8e. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZHNB2005217.
If I Held the World in My Hands I Would Squeeze It Really Hard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce66533ad81b7a8593db29c1df0f933df75b889c27bf115d8865190086b946a0. 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/QZES62446608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b99fc57df0779d02dadfbdc63dd77f930ba8c3b1c2c253e64dc26e78bdb0f6d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZES62446610.