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 0xa6040150df025f94984977954ff8d9ff9381fee5c98bafe7ad6ed88e33e4a627. 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/13c464fb-67b1-48c2-aec2-a91c7a6a250b.json and https://artists.proofprofile.net/proofs/artist/13c464fb-67b1-48c2-aec2-a91c7a6a250b.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 0x1219274806de1664957c4d3082620981ed763565e5d35e185c28662e8ff5b93d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAFD2068097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b164b1f7321936f6213a54a8155699279778b50228bda661c056b440c02a009. 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/TCAFD2068099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94c08dc21a1d97cec9503c44238c5b281c6857c8ad5439f7c0372a22c80c5f5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAFD2068102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d41550a9c9b6f99051ecd9fdb48929610dafc77e35345c5f49ef120bb867b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAFD2068110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41555f2a8bfe0a93837e8f88df5235083742e7bf06258776feb3ec5dd2ff8a63. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAFD2068114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a12cd7be06f4e18123ed5fc72887b8fc01a13fd8406c11c92e699fa79e97ff. 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/TCAFD2068117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5511bb480599a5d68fc2df0716ae8d971d171722c9cd103c55cd87524aa6b850. 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/TCAFD2068119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24aabba2c8b56d5876c35bd8df3ab49566c9c7b056c3a540b545285a6439da9. 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/TCAFD2068120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2a9d4dae3e93d4d9734dae6f4ff478d3cfe749a3c87f5e0b0547dfdea99594. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:30Z), 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/TCAFD2068121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4feac5dd74b37a05b824252a0908d238ea5b2573a42cf3b89c9a07ac31436. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:06:57Z), 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/TCAFJ2145083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7711c81b0a3a0c591d1f722cecea6824514107fc4d6f12fb385179b4087947. 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/TCAFJ2145089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a69bf294bc7a8dc1b6b837eac8efa2372519e99e04263fc0fbf55dc9c3427b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:56Z), 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/TCAFJ2145101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48f396143c4a94d00f069a6477ce306195b971e17fff7beb68d92cd83963bca. 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/TCAFJ2145118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669c1bab5f90fa4fe26c7e44505b578d89f415fb00ccbbc9bd2e21b4b9d35f5b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:41Z), 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/TCAFJ2145119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bf43f4ea390ca5cf88d1b1a070d5d8fac2385457a641ef6a557e9cf49b1142. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAFJ2145123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee11bfa4eb33235ee06c889d81b3cb1713078afef2feb40b58a44d621e7cdf7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAFJ2145127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d4aab985e9248bed2066c41a1421fc89dbf7d82b54fa473217cbf64d6f60ed. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFJ2145132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f263caadaff2005c371c5b4aaac2789b5a9b81f6e4e8dbdd00b211f881449. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAFJ2145135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bfd68ffb693b5cbed1b1cf659c94fa24896a5e4547804b4e64bbb18be389ee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFJ2145143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aea055213fa24d09b6baff7e71a396cacf2bd4a8a29f78a24006226b0af1593. 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/TCAIO2486102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa63c4fc6f501c4bf9eed730d944e0fd85c1e739bb89b9513c2db8db4f74113. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAIO2486105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b028f1076a81f73bf521778c1e007837f1d8f90d61e311d766a1925beb86614. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIO2486106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657886259893d2c79d8d727b35b358ddce56dfde0535ab989eb0614d21c5b7f2. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAIO2486107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf3d048ac31cb1d07a0c378a798d220826ae6a672e681d5ce0cf4af4befceef. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAIO2486108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f392d683769d2fd9fe88fbbafe6cc77d4f599d6ca4932c18410429da362661. 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/TCAHM2357732.