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 0x06774f6fb5544bccf3683637c33a9512ff2fad2f11cb521b073b7e6764c8e8d9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a84adb9-e128-441b-9ac4-834211aa2b9a.json and https://artists.proofprofile.net/proofs/artist/8a84adb9-e128-441b-9ac4-834211aa2b9a.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 0xe9325bcce355ca0f03e8ce3677f214987970d5a76088fdedad46c0671c29a621. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:51Z), 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/JPVI09521370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8c8056e94aa5d6d2beb8211b3573146e7a1daf60e26d1033f8ff331672e08. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPVI09521430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8878ba73ab6e77099472d908af3aaa2ae22187d4b394afefd2f795e15a25174. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:48Z), 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/JPVI09521460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e79b48215aeb8fa5de540f5222cf28d8df3e9bc46641042bda322ad704b419. 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/JPVI09521490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e49f7c4f03898549df752ae438f8604810bb69375adcd392ef1ce7b7d9780f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPPC07801320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055bd01f035a6084d637e377caa5226e9db033ab5d58acc679a8eae105e441b9. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPPC07801360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d011a4f8d381fd374c77ceac131c861ecbc34a7354884f1a4d8937ff595aec. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:38Z), 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/JPPC07950572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a710268b2234da1517e2b852260ef18f22f965b84b23b08cf4c92b0b615cd5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC07950636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c457a2e4a6042c1fdef28b74dd0d8028e4b0036628d16028af242ee0e934b7a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPVI09419080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52dd873430ae6be6283e5e38214ea98ed2e2441787c4629425cb95c24f411b0. 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/JPVI09419970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949de0e95aaa5b5621a926ccb1ad7307384189bb6510da51af29a9f62177ae6b. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/JPPC07600580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1856e7e0124fa9962051bea04e23af6e2dfcff43ba4e4b3121bc88d3e378c526. 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/JPPC08201960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa075eee22a77d05fbb595a1d1eb4b03912b1dba0d9f917f291dbedd09784c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPC08202000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377ec1a26a080045e072d67f1eb162d13451111a9c1239f0c31ee81d66cbc149. 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/JPPC08355445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6666d2da0cb72da90bae0438bd80b8874ccb200cc27cc8587fba8f70d4c84761. 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/JPPC07700940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81100b9cec6969eb6d759ce2af2752bd1cb85143672f0861564f408773e95977. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/JPPC07700900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef82815728a564234917d845d3189a01874a601529329fa5c08a00032d2a8940. 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/JPPC07600510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7b73ef34dd99e70fd692e66944714c2986c4463b11b789f06fe02153286603. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPC07750131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13d9649dbf73b78297263e2a1e82e7520220eef55202b64c96c881c0a809e0a. 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/JPTE01803980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25b259b345a8c9143a1f2864244bd554d520dcd578cbcf938a553224a698a64. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPTE01803990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b0d6e378b33de85334b32e19578c62b6a211181e581e3b0a2765d59e83bf3. 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/JPTE01804040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a29d3fff7e86f5d409cd36a49c6b3da6d96cb8cb54bbf6639a5ebd427d409e1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC07600610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52730968624f9fbc83a4878b870a3215b2acecdeb9ec528f2ff36d7688c6b52. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPC07600540.