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 0xa1c97596608f833026f775dbb6d7621d2330e3efad4449d99982014972a21208. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29e8adc0-a3fe-45d2-8728-dafe29f55699.json and https://artists.proofprofile.net/proofs/artist/29e8adc0-a3fe-45d2-8728-dafe29f55699.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 0x546d65432c3b00f9758251299204a5430bb77ba52fc4e85f22d66a7883629187. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USME31900629.
One Quarter Viking, Three Quarter's Pussy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a92be2109b244057740780a2f8a2480ab59ab1a04f01ea17314ce2b4ab866. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USME31900630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1088ca6d7c513ec937f8aaba79425f165ee043551fbb987f20e0b137cc7854a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USME31900631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa783bfa0c1cd0bae534bb6a43f604b791de733d7f70ea63db0fbdaa0af323c87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USME31900635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb1e2f3f6c657ecf8a084e2af0f6ab0420479aa4d5746b0eb63b39694766d3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USME31900636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0801183f853d94bcc2d5077bc26644bca341ca1c2634b4b1c840e2e2839d5837. 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/USME31900637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355c6c71e2d704abe7ae7c5e0179d96280fb5cd9545720eb2f00677394bfacae. 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/USME31900638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ba9dcc366d8e516c95db237e769e369fb1e65d2f6a7e9d7a6d3e86dde78b9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:49Z), 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/USME31900639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33e55b1dac02f68a3a48c32b6f54f353aec7a4837ca5ebb37ea005859d81fa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USME31900627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7717b34bbf3acef09db7b7833946b0b9132c67b96ac205e389a005e89381e756. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USME31900628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e583bfbe025b7d9ba54903dfc1d4de02593a96edbdd5fa0273cb12f3edbd622. 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/USME31900632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e956ded6a5f8e498d71d5325160ee50d332822f6aec900a718afa1f61e740. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USME31900633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f95a4dcff4f4e5cdcf27bf6e2e5c4957d4f77a83b1ba6f153e11c1df03551ea. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USME31900634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258e985e2ee8ad71bb3f5a0e7b9cb5379548eb5730f8331d335bcdd41524927. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US2640669501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6d9c0a1f0bc9e599b4e9a23912fd57ca622803fd69ae23744742dd0dfa6c29. 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/US2640669502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098306e33a09bc70611b9572ba26916c918b4d8a82ae1739817db5700a0407a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US2640669503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c3c37cd75c95e9e439699b9f91df5dd896dce86db6b3bb5e372795933c1467. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US2640669505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0996430944d1b8b2e572c74f5d7899f138bdc78c3860c345583ef2d2fe4aeac8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US2640669506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576bb72b217f867d3b55f7c0432be6aa68ed00b263e51261684012d8cca90d31. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US2640669507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab392a817f1ac036432d0fd093fe33bba8b80c3edcfd83adbbefe372e9a4f5f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US2640669512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511767ccc180e5fcad9c2170560424459bcb6a63c2065eaac8b18b866c961013. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US2640669514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb212505eca23dc3d5b0d9ae3d45eec865c6c967188659c36158bbf40b52d8c79. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US2640669517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1845951f55bfc69f1841a85ffe002c9eb0ef7ad19e2d897aebbaf4abc51b1a88. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US2640669518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4d7354fd118eb85b36c49c880f2a434d531d1b57a311f0eeb08662b9060aeb. 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/US2640669520.