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 0x91a5af894376407a554e60f8faf73a3920696aa1a651eb53852da01bbc1dd109. 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/f9f3b98c-7690-46fa-bc08-acbd32d23d80.json and https://artists.proofprofile.net/proofs/artist/f9f3b98c-7690-46fa-bc08-acbd32d23d80.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 0xa3f089030e9ea0c800e6d19a952226a2b64513c39f66ca23929b4a9a1e0ce0fc. 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/GX3Q92440385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979fb38644464f17b6cd22c5bbb8df55fc5a29485224e33e2e2c33b7e2d2854b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GX3Q92440386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136fa3eed39a0bd7a9d481e67122d6b1d766679f45fab559cfdd129c6a01dae1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GX3Q92440387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c82f7124b447d12475cb4307507ab3102f998d4130fca795bc25b5e738304f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GX3Q92440388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c2be4c4d14f223143bf668000dbc64321e951b44bf2859fc01322d78641476. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:03Z), 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/GX3Q92440389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f5fa7fa84f499ee3ff55f3a2921f0676fccec388c5900f37b897649632b653. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX3Q92440390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f4f20f9a528d3289e11401b8d76bb7c8a65a0fe50c47a0e7dda356931d8571. 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/GX3Q92440391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcf2d65108a377c082912f068b974a4895642d236aa6c00c036334a9fd7ba7b. 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/GX3Q92440392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3342868356c9225ee1f36bef7e211f4884e34cdffd8659b5744b47f8fd8225. 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/GX3Q92440393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3fd3e32a1ba14125cab746fd89d018492b75b86bc4629fa142579726e19eb. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX3Q92440394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a75c8155ef6e081a68e358a8fc3d40000d2ff93576b7c7ad848123aa0f1343. 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/GX3Q92440395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c8545afd4634f3c305d8b09865b0defe2789a7431e1525f3213283e4307082. 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/GX3Q92440396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c97dcefd42ac3950ee1bfe126856bcdfe9573d2e5d62827319a990c7a98c10. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:46Z), 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/UKXN22482685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d0bc414f3ac74a32200b33603b37934cd7059aab42ddabcdeeca4d099accb9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UKXN22482686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17da783b28a894309dcba0a522e38af373775193976be12a90db6a9c990fd6c6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/UKXN22482687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02274f5547900dfec39c32b181dd7a907be10ec199a0fc613285f119b3cf62. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/UKXN22482688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dc0e1cef9844f6d6eb207a82d3e844d96b6f9d94b19131728570e21faee17b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:58:09Z), 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/UKXN22482689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d849f94c408627c07f4c6bdb93948d53505dcc55c2a3f722df539d577906e86. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKXN22482690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5310fbbbca0eb77c20fa50fa60d47178a8ceda50131b99a9b749b9ce04a4771. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/UKXN22482691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1936ac0394355092c5b9d94752fc04db6cdcf604eebece8981b41a6a8966d3. 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/UKXN22482692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe986132fb9f4db1d5cc533ac37b57ec441c70bb584384f7525ae42de3e44797f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKXN22482693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdeb26ef9ff6412e7b15411aa53bc59c6befc8c209dca6085da10aca2e42ffc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKXN22482694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb28ced754145f1c96eaf55267a96100c750257d0079622a3de24e6d18469c0. 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/UKXN22482695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188db90bc946ffb2ed9341c625c0ffb7850ab4a16fb14c545142690526c770e9. 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/GBMA22419757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddb8a1c3b8a75a5ae229d00e9aad88b27053a2acf7247911c0a41fd4390d9c4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBMA22419758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1cfecef62b5dee2a3636147ad97d395864bd27f169b438ed89e5cb2503f1ff. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBMA22419759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d57f9122cf1cc63c849d15f32548ba51fa4feec1c79ceb84c0f95f0413d6cd. 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/GBMA22419760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ffc1154832dc5380e883b8350340aa352019a1604b93100a1f68fd3e5460fb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22419761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c5e1b5d689234af7bcd8a5420b23a8daa4e5ee066caa7f8ff6b0548946b5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22419762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd7e28dca1cd70d177955c9292345e612cd4e2a6bd699830ad5d89203c40a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22419763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61783e633aa94f718badb007767c1095467a942658f1289cf2b614d2f1f29aac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBMA22419764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03e39554cd8ef7d68012a989d3cd67b69bfa45e2625700d7dfdf577442d3ce. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBMA22419765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd1d8a4108741370fe5d2a5306d9cb6338a25fe505364ba96cf9a5482d8bded. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/GBMA22419766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23049882c54f14dfe09c12a3dcf00e586bd7a6d7cc46262d06635846305bd737. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBMA22419767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081dd135933440a7c5dc8d23bc0b722b8c0b54585541ca641353cda3a6597b4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22419768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee1f7be520d9514f895d7c515b9ec97f87ffd681ebfb5e9d85af0ae887d09e2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/GBMA22419769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a0bce69a1dd4311be79e6c45426db9cbefc98978a0638f0b0b5450e2c761a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:25Z), 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/GBMA22419770.