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 0x8851f8594c48d37be62d8eb0929df46b5f5fb7f7d2be6b2e4699b2b5bf5ed7cf. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0393520-1216-4107-a925-64fde3664b8a.json and https://artists.proofprofile.net/proofs/artist/a0393520-1216-4107-a925-64fde3664b8a.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 0xa202378fe312844ec4f3fa5dfad56c7d8791add7126a56de98b292e2537c0146. 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/USZZR0912867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7605003504e62d5286389c632628bb4eaf328110561e6e80fa3b6716cbc58732. 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/USZZR0912883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663dddb4b9850d7dac9c42370ed32eac47cb87a25e24d90eb8d4e35fb26b4c9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZZR0912869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fe1e2a7ca544f571bfc95f5da180b8668920fbaadeb7386300f55e081caacf. 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/USZZR0912886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c0ebc7d88c8415faa65482a0e3a37ef63ea9e674964593dc067d3f40ea37db. 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/USZZR0912871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b448b704227be245ab0d5c7614e4762bc3ca2dd644092434f7f09e3c5f53e0. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/USZZR0912893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034df32ab0520a6a923449aeabce0370e236978dab0d2db9f61017ec6e40161a. 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/USZZR0912878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc826302f70f19a7bcc1bba6a4902e4d9950c16785b588f7086dd223461acda. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZZR0912881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8f41502323a452ed1b0c9b9287ff405000b949e808c250b7644c473aa7cfe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USZZR0912898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe243652c2bfedf24758550ba9b2014b4356e5fdb82b6625046d8f9520f00f004. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USZZR0912870.
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 0xf221f3966e83720cb745d07b0ad0c48037e6d63cfc1aae42b1c1defc58f0d573. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USZZR0912873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0323af0817f5e2859c01f2d3f1d64f3254a2a00d06b9ea1ccce85508b5c65a10. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USZZR0912874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414da395d248402f3b1b2c1a06659d7363df923eeed4dba53f4941ab9579ad7e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USZZR0912896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf121e80f9af2728754fafe3965f1e2e9924723f83b2d3c5538aab4bd91f5e99a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USZZR0912897.
Recordando a... Los Cardenales del Exito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323bc4973803c0e805c2909fcf1ff143a2b5404e54f13e4f3fa753fa1b4e4448. 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/USZZR0911041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928e971439c92196d60f342f018810c1c40338bb0141405a7171b26e7761f995. 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/USZZR0911044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9385879cfb2d8d8093b19ed12ba323919e8bd8e9baccd0fb81ab497b9223b29c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USZZR0911038.
Clásicos de Oro de Los Cardenales del Exito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c533fdd49b1d40e535a03f17ef5271138f1ea9875244812d0c9e1d19e0a9cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZZR0911311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c66309582df51c2683d7d74473353bf79087aa546b405753cd47fc9f6bf44e4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZZR0911319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9294bda63354e3f60187720a6863a08329a9b483384327425a0809de7c4c4e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZZR0911321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf002b02e583abe34cec03819507ac156332ddbcb9ab53077f2e0c0ae8231224d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USZZR0911308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b35bb078f6483e68b8ada0b95269ddf9b41d8444e5438c230cb32a8d664043. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USZZR0911309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675990db2ee4d68ccc48dda222ba9a6195a29f35a4c3f097f0083bb67ff7ddd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USZZR0911315.