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 0xd881b9dcfb7c740607a25e0af5ad2c68953763421335776869986d22df09d3d2. 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/6f28b495-d18c-4b12-a470-0f7679e7a63a.json and https://artists.proofprofile.net/proofs/artist/6f28b495-d18c-4b12-a470-0f7679e7a63a.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 0x70f8999225742c9b81e19c37a0d24b6eb75f3405e1c29eb3de74e1c08c917b2e. 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/JPZ922105971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c967025c6eca734c4bd85ad3172bccf92c877267186a6f0c5c15601437758b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPZ922105969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536cdee8b14572a8dfb25b6af9e70d63466b8e9fda039e40b1ab38c2eda70cc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:13Z), 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/JPZ922105977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd777f916f53874c4004b8c848d189c1815ee69f5265921e17fda58c4365d59. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:13Z), 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/JPZ922105976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a62631951468dbd3b67aa8af2961c433273fd3316a5008f603c015d102c7d32. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPZ922105973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a809edcc29bee4b73d6fa9303809dd077eeb5512ca5ccaff77b9683780d424e. 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/JPZ922206457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbea85ea4dd2917c481250c74c0d51ac58dd603f9f343d06b7ed6bbf4d5bb8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPZ922105975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28458b3cf7445d61515d8e43ffe5d1a2193a4d31433f108c8dc9dab1e68dfbad. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:41:40Z), 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/JPZ922105974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed402f10150efdd62a74c3046598f31e463873f16d507c4d6b40b02041720d0. 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/JPZ922212249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eb00c6609c2cd1fec6369cf929b76f8b9672995e1848a1700e4a9b7ac52b64. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/JPZ922302422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2855aff2c6e4d8377ce82f5e092eaf0351ecc97584bf24ef8837909c7e0680e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:32Z), 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/JPZ922105970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536cdee8b14572a8dfb25b6af9e70d63466b8e9fda039e40b1ab38c2eda70cc. 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/JPZ922105977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28458b3cf7445d61515d8e43ffe5d1a2193a4d31433f108c8dc9dab1e68dfbad. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:25Z), 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/JPZ922105974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8999225742c9b81e19c37a0d24b6eb75f3405e1c29eb3de74e1c08c917b2e. 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/JPZ922105971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbea85ea4dd2917c481250c74c0d51ac58dd603f9f343d06b7ed6bbf4d5bb8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:54Z), 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/JPZ922105975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c967025c6eca734c4bd85ad3172bccf92c877267186a6f0c5c15601437758b. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/JPZ922105969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd777f916f53874c4004b8c848d189c1815ee69f5265921e17fda58c4365d59. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:47Z), 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/JPZ922105976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a62631951468dbd3b67aa8af2961c433273fd3316a5008f603c015d102c7d32. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPZ922105973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e603f74c028a25928f01a457fd86cf0ab4efe85c7fd95ae95adba3141fcc98e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPZ922105972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d27fb5b2c315af1b53c4e4a99c4ba10b5ad9c1a5931156a8f637216b7ffdcd. 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/JPZ922105968.