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 0xcaca012c6dfd054380f15a4f1b1b31fa7bf0a67f3c54b637b0c79300c5ea8943. 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/ac73fb69-64c2-4683-8a67-d2a22ccfa5b4.json and https://artists.proofprofile.net/proofs/artist/ac73fb69-64c2-4683-8a67-d2a22ccfa5b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Entre papeles y tinta (Suena a reggae), Vol. 3
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 0x702930b1ff33ff665bb5f3f6d7c002675c732ff4a7168f9795fb8bd6464f6f23. 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/USA2P2355796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ea9b9afe18b8f865a10a294de48c97cd9404d5f6ca042a25a0e9bb428b3d15. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2403720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c109ad3123ba4f90055f1d7e39107ffa380b3a2dda95c3dcbcb899c2d6e2c11. 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/ES71G2403725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35010885c2e4b49c9674027d89a4ada175295e40ccc526581a710a5bacd5d629. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ES71G2403728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c115cfeb886c6f13efb2d8ce3fcaf59d132264d474c02a0488bbfb7451f49. 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/ES71G1932380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e58a660100f82172c3a29f124b30395055d91a201e58e08316b02a39a2de8e. 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/ES71G1932384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8c06e0dd40f7f2f9e3a92ee56dcb8044d11f1c025273ed4d47c8702d60a5f2. 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/ES71G1932388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bd9c25590139409f57c13661f7e764105f65af98faf7d2fb2d334f925c6551. 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/ES71G2310673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779229143a3be5fc4f3d8d7588c18c32ae429ffe6bfc77bf821465f43948eff0. 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/ES71G2242833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ccf39a6bd89f5a761d20c37372c43d0d56bd78060dce012e6b126c4bef6bfa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES64E2204544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51136ec15bb61abee2b0df2c2d1c838cdf40152a477441475815062d369964ee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2244844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9fc6284cd91090c54a9b09f4f76d26134267063b5f132c7f792c0a90830335. 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/ES71G2225328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc60937f1afb0c5c9f06a24bc48719ab28898043c7c22ac4d29e3dca07c2e98d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES64E2202521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc80f8dc5ce9233e863b7d77ec2a31a61cbafb3c89f3d6444ebf03a2e28ac66. 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/ES64E2202675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75757319485b8b70e4bde22a5a111771f6bc64696a19c7404a4ef48aa5b0a1e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES64E2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9a4c4dc4c45d9125ad311f217fd6c3ee56861d773c702265a505a4f74500aa. 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/USA2P2149972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabad1902fe36068a0151033b07ddfb87f0d23d7f43ccd6792763103b9dd16bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2062402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc827daa45052e49cd28d073b777e213fea0d3a03ec2cfac45f6582aae65931a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G1932771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1d6d21816d85bfd93cd32999b3faaf8af94558d60ffb755d5324a88178163e. 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/ESA031906501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c40c0065a6158b8744a2f65e2de1f4c29a51793d06f5b0cfa1e6fcd937b79a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G1857847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4817aac90d2d0571ec39b6acac7e7c2d144213e209f613aca59c73f56e6d644f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX1942401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c40c0065a6158b8744a2f65e2de1f4c29a51793d06f5b0cfa1e6fcd937b79a. 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/ES71G1857847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b8b52ec7d1b0a9081ef8f3eb7ef0da427c5cc1b892656beaa7204970f3edd. 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/QM4TW1927704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c40c0065a6158b8744a2f65e2de1f4c29a51793d06f5b0cfa1e6fcd937b79a. 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/ES71G1857847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3c12b58f3daf16450bbe02c19c467a9e4a1994612e54d1e5b99c524bd012b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2040475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6496017e1d3a7a9f0c30a7554e5e5ff77d86e2ed73cdc161727c0399ae0ef. 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/ES71G1824171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b0fea44de3c223fb2be6847a4d98465178cf49c817783984fa820ef2e1d78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G1824172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82956765018bdc2b86b12931b767239e7595855e58894eb299fca8f417c0f2b5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ES71G1824173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da1aaa0e4a30d0998635f79f3cddbffe2ce22d6f1f2a0a3fbb87bb3281b83bf. 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/ES71G1824174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04b46a5bfaa0615f0d91ebdd71c8abe91a8f7f0f716e16ea66db08aa4ff90e8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G1824170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730e0cfc957f2873c47847ad1c9326d8c1c281bc9c624cbb665c546e45937762. 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/QZHZ32265073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44105ced271badbbd2f09672937547027d7970deeb0c9c74a372497ceb36d808. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2413581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1aadb309923cd982849745926f175d7ed733faaf43f7231bd7ff7736e9e333. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2312041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9093b8e29e6ca1946c49e9dd8936677c843b156ba9b4bc1abe433cf514c7c527. 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/ESA011691232.