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 0x097cc901488adc7bd0a42c79c0fd89fedf7aac34ae6bf9ce995f8cfdf15c52d5. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d927b374-9447-4e4a-8489-5c5efa908c94.json and https://artists.proofprofile.net/proofs/artist/d927b374-9447-4e4a-8489-5c5efa908c94.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 0x0dec474112a8c32cec3be89389a36bb7bddb4cd944c0ea69a9b9067e87dd2074. 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/GBKQU2322518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20e45e5167c41f4f4ba3a3a108ec5193a8caee10883a98d8d560f37a91d829. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBKQU2322519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91cb558c99b7a9cd77dc89fc76af3c4600f70dbee0c3db1353cefb2feeab568. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:00Z), 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/GBKQU2322521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055118645552dc05d5406a5b976603876ce42fc68931413452ac8435f8199461. 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/GBKQU2406313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27d902169af03c4ec76eb939260afb2ab4b156f6ae278a9796ca006cd2bffb2. 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/GBKQU2406314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ec7c9acff2d6e3f76b8bcc60228a5d11a22437cdadac31d63e84934edc769. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2406315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd65428cf3c9de17684e611fd3714e1d60015c4758c363bbdaf398d59d7cd12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2406316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828fc18ac16a70bba8885343d2062c325af695a81a5e3543092ede274bf67ffa. 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/GBKQU2406319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65634a89dbc06188a66175997923ce4777bf1097be9fe80a9d79e0284b89b1e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2406320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f098981c215dd98e7992a98201b7a49c332cd63fe07e097dcf82051e1165f55. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2406322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2add996dc9d3b665fee7d504627d4f1b8a431708c73a5f5e8b9e9e5c4d6203c. 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/GBKQU2425979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67488cc6c4257c48bd448d5b49cd494b58c5ba5cba4a687f9a02c204b63d31f8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:32:13Z), 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/GBKQU2425980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97abd2fde06e1abf42b5bbe5564e4d7a984785d66fc3fe1cfc6f947770e5e9c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:50Z), 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/ITP842500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880d454cdb207085f2e96559ada68395671c320b0cd6996b45ef128361e219d1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITP842500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add52708d26dd24791a94bbadb2f8779bb0fb28d740bebd114862604ec7f32e. 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/GBKQU2493960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80945f9623ae3ee2bfe1ecea2b3fa298d4cae6f4a2e1d6b7213bf044f314ea4c. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/ITP842500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680078ef755ccba5e321369431bccc5be3e6a23b0b4bf0fcda477399ad2c5de4. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/ITP842500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972e63eef21d15b95d3ac964e353a3901486c44533366948c9038aa91fca85c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:50Z), 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/ITP842500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef1e97f2bba9c109d0a37375be0b9e035371e04d158d0cc9ec3e03fc4af238. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:03Z), 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/ITP842500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97abd2fde06e1abf42b5bbe5564e4d7a984785d66fc3fe1cfc6f947770e5e9c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:33Z), 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/ITP842500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2add996dc9d3b665fee7d504627d4f1b8a431708c73a5f5e8b9e9e5c4d6203c. 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/GBKQU2425979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21fbf759fd0554d99e66160f44ed88c2e15e126d865aaeb99f4e213a2c8c73e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ITP842500082.