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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638db218b9a0b31225c32c00cecd042545fe246fcdecf01918dcbc8c83a1de1. 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/5c52c36b-e124-4018-be6b-0f06c39b8cc8.json and https://artists.proofprofile.net/proofs/artist/5c52c36b-e124-4018-be6b-0f06c39b8cc8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86f16589a94ec2038b664ece4e9bcd86c51657a53adc97b26b9511a888c1184. 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/TCJPI1994125.
1 Hour Pink Noise Loops (Turn off shuffle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26567867283fd9a60fd1eaba0139dde9213abbcc5da1b2c0251ab8aaf89674f. 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/TCJPI1994147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f2c000a74eefc0c0cab295d7a4709749a20bedae831b989a4c1bbb0a3cd68. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TCJPI1994148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da710d67dcaf1f3d67fd2c83bbcdb4cb0fb317dd47cef16633dc8eef62e07d1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPI1994151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40384574e740e21efcfe45dc6a0d0cf2b6f04261c2373dbb7b00235870f3164. 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/TCJPI1994152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c397e97afbcb2b88fc47706ccc03b0edbbcc02774f3f1bb90e674dff8485d4. 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/TCJPI1994153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bbc01568096a4a961d578446d504561fcc6e94f21b6c8a5e60f995663dae57. 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/TCJPI1994154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f8398ff38b7492b7af3853a2158f351b1456f394cf8876685bf6202f73076. 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/TCJPI1994155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf399ee10073d0f78007ed2e199f572b963c04b92230f2f4b8e4258ef9b73babc. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/TCJPI1994157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dd26191d69bd16f84d7d1988c8fcc6cf78a41845eff194f68851cf5c894840. 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/TCJPI1994158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d87197258d4db394ecaaf96f7deea750cca299e977efb4ec0e84e2660ba2f2. 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/TCJPI1994159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bde57759e3edb2c9672cfc28c028da320e1a01da86bd37c994c56b0bda1ba1. 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/TCJPI1994160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ddaef4dd99fed0532fd021d9003c96d75bf067c5b27f07c88a20d9ddbd471. 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/TCJPI1994161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5005c56262aefac40b6fb04f03361d91375b3d0c61fe9f4b4c9a5b501dddd511. 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/TCJPI1994164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35846fd7f9a69887453abf64b3777376153fe47c4ef31b1b248ef0747d29c88. 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/TCJPI1994165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ced38ce0cd47070ce549b258222699ec3b297af72c8dc9ca62dfba473aee597. 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/TCJPI1994166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa977bd60311862e23fbcc5bae85edf6c2a28b3e666a83a36ed8851767f4c890. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCJPI1994167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570529b7d0e6caa33516f50674ba08ad2450e80e1edfc663a329eafdd3fdd030. 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/TCJPI1994168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e26bca4008c4f4c8571f48b9dedc23f682e3cdb9f3c0db1cf85a310ff84c109. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCJPI1994169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd650a75add4690739656759a355aeb587d75c4fb0eff15b6ee0fa25b29f5c13. 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/TCJPI1994172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf20b17510aec8162a2a0f6a046223bc53aad453baf07ba087167be6cef4193. 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/TCJPI1994175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997645fdc816e67d13c74a94a835616fd83f6a70b34a2ac57fbe25b83755be13. 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/TCJPI1994176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfdc321d346c4c462c6d27f8ddfa09518d0834a4eb2054697cc9217bba9072a. 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/TCJPI1994177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23648f1f9d134c3c6ffae6a031d223c474c170d49e9ba02de43d9567042fcfeb. 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/TCJPI1994179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1679968e34021c6ba497b05c0706fc7ee8f2cc97dbe2b2c93e41d37ab8eea30b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPI1994180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a99d62b7eb3c0fc74dfe729b441cdaf3eb073f33ca2c0390932f2e77a1866cf. 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/TCJPI1994181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1491637bff20128f671900fde7f237d9f899b69f21399cdf902824739bd319. 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/TCJPI1994183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939d8e0d8971cbf80d19f6db15674e876f4dbcbeb9c94b954776dbcb49ceeed9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCJPI1994184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f311551179f8bf5772697fb25325a5bd41fa31c29696c2a0a8b9dea51e9cfac. 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/TCJPI1994185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb91d83dc3cbd41228a8e319b6535cf308a8b9b49d704c901ca2006cc77e09. 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/TCJPI1994186.