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 0x1e0ed37c9a6690834294bcfd955f52c024bf96b87b5805112e247dfd46dcd040. 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/1eaeba69-6515-421a-b136-9f47e02124e2.json and https://artists.proofprofile.net/proofs/artist/1eaeba69-6515-421a-b136-9f47e02124e2.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 0xacca4cf37a512db096684a90d4e79ec5a49a7c4d2f5a97da8bbbd62343a213c2. 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/USTCG1003217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacca4cf37a512db096684a90d4e79ec5a49a7c4d2f5a97da8bbbd62343a213c2. 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/USTCG1003217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c2badb7cb312528c9484858284ec46ee83fa8e8e6fa712b79cbe0685f54a50. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:44:47Z), 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/TCABP1309448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2150d2b0a264a87ac2d49de31948712e060d4be3032558a1fb9d6fb726150462. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:14Z), 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/TCABP1309464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85f627341c5827b7b05a439a8905e7a5b313f6eb0bd24bc9e9552bb6e78db7a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCABY1465736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905873eca7fbc55b5523815675ae3cb89651309505e08996bdb0f78a6eb7fa88. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCABY1467054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40daf67a4f951d7756f161fe820fb3dee74e89f6f29bfeba3af85c4ec2799a38. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABY1465676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85f627341c5827b7b05a439a8905e7a5b313f6eb0bd24bc9e9552bb6e78db7a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:30:00Z), 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/TCABY1465736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28030e1954e8fc25c447b5bed59cfefc0d892066a5d3da69819a6688900ef02. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:24Z), 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/TCABY1465742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b864055e7ae940dc0d3f02d7fffbafbbcc5cea3c1fdf8ca3d425909490ca43c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM42K1888002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9046404a0718fe421be562234304b4c0b0de009012f7d535a61a0c1bc1c99d. 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/QM42K1840268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe71cbd2d4ef0cb7cc410c7a61d84ec4a4a3b34c381fe1266459b2236d2e86. 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/QM42K1881867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76b01c171b7d3b5e3ec514fb7f19de9396a8fa1533c986777037b99e9c4bfe. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QM42K1802636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6ceac0755233398a6902aecd6d2535bbf395768739e9aa49acd7bcaecc05a2. 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/QM42K1856498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8d79a3250928a13fa59c3883dee505ad15400514bf6ac6eba7187fdb6854d. 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/QZTRX2104248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9046404a0718fe421be562234304b4c0b0de009012f7d535a61a0c1bc1c99d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM42K1840268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda50d939ea66827008b04b338ee5056a94decfc129e5421836be3a5d37d10670. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:18Z), 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/QM42K1918038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a88190bd5180ba811cef22b18f3ca436464c73926780d0d090c6e7f990ed2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX7852400673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a88190bd5180ba811cef22b18f3ca436464c73926780d0d090c6e7f990ed2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX7852400673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc3d78bcaa58967c1fa358ea41102747de5af3cbf19fd25c2ad967a5a80c4c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA072240333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37fcb9f600497f7b85857658052583b70888f37a1c5ec8aabdfa415c06c8b06. 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/GX7852200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1872a3bcfe8cc16f137616f9fe66cc0301b408b17e3b3d01b50053101116b7e8. 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/GX7852400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cd9f89d307caa84c8135bad8b756604b699261679e2467edc058488b732f04. 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/GX7852400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e31ed44da8678e75f3c4e18fd0093cf2d443683658d9c0a992bf2f262d5da9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:44Z), 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/GX7852500351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428a1a76dcccf0612fa634413a0a04755dce32fc915c8813039a75bbd764333. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX7852500353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cadca4d053a66339f53f774b5e9d658224520fde9d96f062239b833a1de73b6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GX7852500354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a7388af9d33aad5b43534675aace05046ebdef1bcd478ea41a9a3b317dd57d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX7852500355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc75d8f8361537e0d87807e97c65b53b53e702e1a1f868d4abe0a341e90423f3. 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/GX7852500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa355aeef57878b571ac3c9d3380f8ece9145421dd0dcc8d05fa0dcde9285dc98. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX7852500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a124b64d1a39b50d607c07c54e186fb0366e6025e744de401f5a260ebe930. 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/GX7852500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c25766078c0c670a74bd573f836e28e147ebae793be32747cc47d622d8e188. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX7852500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368ef070e28d0e10440b40cf719aff12a9770a9e5286f45782c9aa5cac0cacb. 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/GX7852500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90699ebf65b8e541d9f745c6485e6fdcacd9f25110e615787485ba041f7ae8b2. 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/GX7852500827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a9752b2616725b98222ec85c10f46dc1c5e4de2403a39ca95c52ea7633c68. 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/GX7852500829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e9c030e8ffd98521c4bda6e01d40be2c8861e0e913d146f132d39c37f8c8bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:11:53Z), 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/GX7852500830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191839a37134cdaa75dfd3d929f358d423e1cca0b1c501e4fd295e0806054d66. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:56Z), 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/GX7852500838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c5aff5b00347d570042074eabf02b040a56b52eb80c785216438941efcf719. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:07:30Z), 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/QZAKB2522266.