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 0xdc908a5ae160e2a4ba482250dae4b8d33e50a7e960314725e349b033dd0cf8d0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5667831-1869-4539-966f-21b031902e56.json and https://artists.proofprofile.net/proofs/artist/b5667831-1869-4539-966f-21b031902e56.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 0x180c7cbc742a346abd71700d893bd5a14c3e72635adc3c729c2cd12480230698. 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/GBPKF0800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c1c4bada8f3d935f0e2659c79dc180b31bf608a854f0ce43f433325a1b03d4. 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/GB7GV1060007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feeaed54127d45337b7c34bce92cdf99c042d8c623efb4f4b66f345fb312ce1. 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/GBNYT1100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c604be7b6cfd15f3c3c80a99d35538c0c7fb78918087c1beaf3eb87243359f. 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/GBZMQ0900007.
4 Evermore - No Rap Version - Single Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b698bcf20976679d848e270f6929e69851d987164e5af415efdf0f3cf20e68. 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/GBBFH1100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156dbfdb4ffa9636885277dff9ace249ef0684f756efed10b08c86d6b53262ed. 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/GBNYT1100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347caaf1760881dfe310c2191e4693a023aa486c0db51d0299ca2232d8d2ff9. 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/GBNYT1000012.
Higher Love (feat. Najee and Nick Colionne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3e8012262cbd9e7fba0504763b4790d5f5872b4f3cd40fca12171aa288f72. 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/GBNYT0800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8bce2facc6195a3b512210a9cb9099f9780339f00d112a5c1a05535e3f6c4a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBNYT0600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5768c132c2591164f7259296b7af9aa14572a5329df48624d1c458c1f988c289. 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/GBNYT0700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46156ae3150a9a2629529e0b376bea70e840b7c58032bfb59f1a173d856628b. 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/GBNYT0900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa2ef40c0a17a9ded429dcb3f1162ab9353ed7d32a3eebdfe887ad6341655d8. 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/GBAHT2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957799d3fbbff3b5a45e3f4020108d393c6d16975c4a258d5ddb42e22c3654b3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBAHT2200075.
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
The Everyday People Project - Volume One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603e33ce509786c2b40ed8f40d4783c4f2ca76f99a85e8039af73d62eca8e0f4. 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/GBNYT0600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f11b2aa5597a172c2036ba561c7194f535e0ec9d6c13dd26b070bc2112beb5. 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/GBNYT0600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219fe81dddbdecc81259841a672380ec13c88574dba47cba4bc9aee873a864e4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBNYT0600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83cd54a7d4d656a2a44029c57d1bd34758e913769712b879901e584214210a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBNYT0600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8012200c3a704c7d94f68efa1df3f22078f78ae1ae42c96f26791e1008334. 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/GBNYT0900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee0cca8f9b14f9dd6a15f405c17271ef90cdc1569f836914366fbd6997a71c7. 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/GBNYT0700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686b69c404a7da1c0451ac9a64d3fabd03f332baafff649a9b3db827c0774a4e. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBNYT0600279.