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 0x5784334078ae61c49e0ffef073309c80a4545ac22c067acfe44a5ab79d94d0ff. 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/0bf40f5e-d5b8-42e1-b88a-5d913f550915.json and https://artists.proofprofile.net/proofs/artist/0bf40f5e-d5b8-42e1-b88a-5d913f550915.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 0x44ccba24fe496e9ae80ddd728d5801266f16a6ff29b4bad4b1a787f94afb2004. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPZ921811605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe950f92eb403499a53dee37c469d25c2db7e390065ff099ac794f8eea83135bf. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/JPZ921811598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64feec1437c5096f18e24b561688bcc7461d38b5732230800c104ac33dff6b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPZ921811600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601e3cfe3313aac76ae956c8d8adffa2ea80b32450f482530b66ca80ccd300b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ921811604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736e8761a2ef6a8f78a82b746ba9ba6946cb9d720b5d43d7953117b030a3e4f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPZ921811597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743baff3791890127ffc43ced1a91a9c64102d7dcb67d6a2caa853d7040bf16b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:38:13Z), 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/JPZ921811594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6269ea1f2861f69ff76125611021ee3c296d8309e853088d66939c551cf8144. 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/JPZ921811606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc53ee1e6a60d0362585627d3a1884da2954f39ae70272e0ff02180bf52ac803. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:41Z), 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/JPZ921904369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa960f2abf2c3f486130f47b8261db13e426ec42fffd1bc3a211bfc9b8a91f743. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPZ921904372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bfaf1c7b727f592c89bbf45b612efbf3aa20bcf73f4dd9501a7a1bc88a07b6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPZ921904375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eecb048098d9bd90b94b446ba46f184d778d035b550640fcf9c7b72c643e895. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPZ921904376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380f991440ff4fd6a73925fa189766c6391ea93de51cc946b1d53d00b9011315. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:27:52Z), 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/JPZ921904373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd5c29bfe8d4bcae3a6fe3fea79abe77e1c8c3cbaf58e0361577bd6378d79a8. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPZ921904380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59167dd61880158910c120e2ee5ff128c6fe092d917991150b99ce1a1477aa94. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:49Z), 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/JPZ921904374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da12790e71ec76c90d5cf8f5af4aad7b4ef3a563fcc13628af017744789a36. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:13Z), 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/JPZ921904378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d287894e02438519bced96c67a7eb306f8eaeb665ec1a000f3a88ac3d307c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:50Z), 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/JPZ922005079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61860aa1e3b365d603425f908a286c726ee20aab3ff17811519276db5dbad13a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPZ922005070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0babfa725b673fd1f61c1a6dbbfd1119e9ee401e28573b634af4144af525bfc5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPZ922005075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ebe0abeba0d48e1d9e5873d4977bab23f3751f9b07bf818f0a61f3b7df066a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:07Z), 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/JPZ922005078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a31f616ab52fd6be1f1bf3d7221312db37d429f42c6d952f079f4950ad73c8c. 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/JPZ922005083.
Acoustic Solo J-Song Best 2 -Progress- (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579da76b734b0e71064891548381f9f36484b7a985b3ea21f542e031466701b. 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/JPZ922208316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b93b2dbecaa215d8873574f0a75f03d7a0e7a4bc206dab3857eb699d348efe. 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/JPZ922208322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1bf5ca27d6adb0876c250afcea9f55bc48bc20724d47635aefd3aa8c42c4bc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ922208323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c250f225b53130c027f9f0cf84b5e2d91015f93150390f19ff763e9be3892d. 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/JPZ922208319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae368f0e2f2093f11c203e82d19a7bc788201e8e4c7ac86cb0da089978efbb84. 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/JPZ922307068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad157613e5c68b0d3ed5d76827b9fcd13f45daa4fc1ea49b3e199533df8c10. 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/JPZ922307070.
Very Merry Christmas〜Acoustic Guitar Solo〜