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 0x6d98d66c5a874069faa01538854893b5ac71c3dce84d32d0884e24ef61f34e76. 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/74bf8cbd-deba-43b3-b497-f50f0515285d.json and https://artists.proofprofile.net/proofs/artist/74bf8cbd-deba-43b3-b497-f50f0515285d.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 0x59c69c897935fa51d62cbc205cc200fb90a12712e8e15c4fd10646b013c6b957. 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/QZGLS2048291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d1aecc2c5bb6d02f12a4210f9746bcdd94d28b19142890b4a93170f23839e8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USL4Q2034951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb83b6e5285b5b73b8d52dced0193faf3779f26bf109f09c52b28482dc044434. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:56Z), 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/US7VG2108087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fea59a541d971caba1b49503ec41e13c7e0f916d8ff73c13b65c203996813e. 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/USHM82131799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1228a9b35fb16d08137a7c8ebb5fb91bd82425c367f05136ac3b54d978ca8cff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USLZJ2275415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c6f6febce1d71c2bf49a3529b105ed06e577566977c6d045a1c1bc6b44ba7d. 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/GBWUL2241675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344e9ad2dbc66e963c215ad37fadf04fa1f5fc81f87e44e800526550bc08c939. 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/GBWUL2241702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97442725563752a7bb1aa55d738f8c3801e323a7bb25993cbbe3be3bfd81bd8f. 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/QZGLS2397536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41712eebb96a16ba1a977885b1c601ce2ffd8a868df1d2ba5a02acc58b7ff8cc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNJW2362916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f11629dfbc1fdb0165fd5caa18ed3ea1a28c9f542e7353e32a5b1a9cc39909. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZGLM2444273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5bdb5ab56567e1af48e4e38cbb292c511994285053c36f06a68ee5ca86862d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DGA0S2416714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21bff45575b112fef97a9d5b6a2d9d8c2aa00079974849b5a8a8d20d08907aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5AB1984115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778909aece2bbb3f53965b0e520291afe8c798180ccde1dd0b974a3c3aa6995. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB1984119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6778b783a699ddeef968445ba42ff656a2656b235b3a006b80a20f912f4109da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB1887559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50ab2bc59a15d7382efa52f5c2d7d8704912945f15a30656d1b6b632c939de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42060311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a3a63d4ceb7234f046d1b5ea66685a9c77322569e5f1c4cf9bb6c6612f9b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYZ2227244.
Cementerio de Amapolas - 2021 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e28ac3ca70a11fa41e221041d1356d009975efc65ec23bd2a5631d9fe7ab88. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GXD7V2556269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b267a6b3baf6716e9c02bea32142806ca476ae85398ef3e159d79580a873529. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2403047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb895b82509880849410c7afaa624bbb2e9e9836e4e860fa5a8dff6cda4394efc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR10S2051506.
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 0x5beaeab18f47524c0a347a365d73286ae9c533f83acf7ee544ada03ebf188ea4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZ5AB1980741.