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 0x093a3af39ede02d56d5d52a6d537cc9942507aa597e12cfa456d7a7a7030fe82. 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/64da57be-e750-45c7-89c5-9f5b077dd8bd.json and https://artists.proofprofile.net/proofs/artist/64da57be-e750-45c7-89c5-9f5b077dd8bd.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 0x56c994639dfd55dd73bcd28e89f0bc7f4a6620927110ef38e997266c564d4f32. 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/FR59R2145726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d9bd145136d86fd0c271f89e6bb8e925e00a18fe91267823f86d62b95f4210. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR59R2147152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63154d49c6b30e51087f4c6c828567ed94aa57c8502c55784b6a0160b96cec0e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR59R2143593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb52e3bbbbd733ddc33720175270ebca8b0f3c807ac9d72669b215897aa830a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR59R2145721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7354fae617dcc06e92deb93dbe08f33c5d3db215fcfcab8cb1e51e43528ab78f. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR59R2143504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b17ea7b542a8baacfe0da8f48c6ce07bdbb3976a2cc2930983fc5783f637f4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR59R2147154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470018ac7b5bd45ce5b4dcc986233d94629be4b48833d3b86e75d78a64922cfd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR59R2145767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4710ee402f6617047165f06fd31b906a8071c6c34642e74580a0295ab8f50937. 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/FR59R2145773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ef356bb92e820a15f79807349434b795ee46ef3d6ede993a726de209554b0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR59R2145757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c91bd59cbb79305cfce31ceccea1b7c29490a8f3c8e200f2d9fbaccd2f008ab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2146406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d5f396c8c4ee10051911f24d378a9cec20fda049d247e2e4d806bb81564bbb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/SGB502304297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dabded390f9f5a9e2cf275dd09346ae190983bdbbeef59141361275775c5e64. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SGB502310734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01da3417ee80b830255fb4715be6ae7dcda77f04d013c3ae67649b695c7eca70. 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/SGB502304304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23952ff4c9e759088bb038792bcf51bb56aab47e05ba8f8dd484b2039f97e5f. 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/DGA052306774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5a9d23a95918c56b9052b1943c2262bc54f2e6addefe563251e4257b877c9b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SGB502304303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11582dd3261f244a72b1d94b408b011f37c7327b55aa925cb0ae633619694a6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SGB502304109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc04399fcb99e306c01c1d45d6b70794e5d43c1e66c2bd0dc715975c46c46e. 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/FR59R2195244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefa4cb858580ca6014910614962016d113760c12418ab1b95ba10ad8d48d4cc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX282151721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab584936307a3f141774be875d16a7f3d0dcab2ac9b4da2b6dcf8a0e469b00. 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/FRX282128390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf7f71d6cd8765aade33800d2d1afd0007d71594160df2a6f9a05e2fe04aa03. 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/FRX452165934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55090baed1776199813b1b5743466ddbc910ad26d9b2a5917c5b77f1b18377b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452161017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2f42575732760e4842fa15ab1a0fa653bfd9f2c530c9278664c64a2ea3ced. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:29:45Z), 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/FRX452161016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16887ea43b16f3c66e506f0e0495ad55e83f920609d648cf1d8fc78e56ac7e. 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/FR2X42254251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34f389e133d3a9ce54d0e1d15184be4a4acebaee938dfa4c56f948a324f7769. 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/FR59R2244016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c7636de93c3410f50143f927e9a5076a0bb08723bd4b1df886ead241600c2. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FRX202219945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff12a6d20a3d2ef35b7025315c5f06d42758e5d9ff77d6cc9d76f4f4287d1dc. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FRX872279105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad5777139686ea24cf212f575232d8b1ad3b3a92028ce218f33ab5dda315264. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX202332228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50d4293bf7a142f23b1b7cd9d7d08bcdb4f7bbca66d7624dfd4ee21e06499b7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:59Z), 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/GXD7V2448082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb1f1a67f5378f8575ad30a4e3e3140a38dd36922f4b1c3b1c15e52bf69757. 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/DGA0T2458839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2264f0bb58bc8f7284bf07e8fea4fcca8e810512f68d183cdc9c64c1fbe327d6. 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/FR59R2559089.