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 0x51be1c0a9e5c21a8e46c5c2e57451f0942d3784e3cafb3faf7dfbf733128c0b3. 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/26dc6cc8-31f5-42c5-93e6-2b4f980d6a27.json and https://artists.proofprofile.net/proofs/artist/26dc6cc8-31f5-42c5-93e6-2b4f980d6a27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x7378c6c92c02a70b4fea173046d14b4645114a4c635367885a131d08873546cb. 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/ES5682000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49779ce80f295269afa84d6ff897382d41382ccdb851e7d2b7a8e36ab122116. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5682000316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa636b68f5ff6ea2c357c7f2131b0e4c9b4fc454fe90b2587cda5a59c287dd154. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5022000768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587791dc53855e95f9f7358202bf8d4ffd61220e0fd50ded15cde5e9500885c. 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/ES5022000769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3271b5ff17423dd2cf96098f9f70f069f0222655ccec83a536ef8edfc84dd95a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5022000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6392aabe4ed789a6a8843116d93af8bdc5f9d9a91fc2b8e331f6b83dbb36baf. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ES5022000771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad37ac9b1be2a34feb4af9d5bb6936a0a99374677d16f60d5bbe7db35d764414. 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/ES5022100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711428965a0de9646340ebde3b7bc0f4a154c59d1bcb26edcf987117c1501c59. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:37:48Z), 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/ES5022100873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc71c0613115802bd9f2fe941bc9f42aa2bf5665db0edac51c39da61ef3f896. 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/ES5022100874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05786d06196237235cfabc71e2845d20bc4f341bcf2461f25bfcbfe375aaea0. 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/ES5022001132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b25fecf49908c1d7c11972c8e78febf5f6e55ebc6d39057e74bb361fc9a6030. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/ES5022001131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d39c0601d2de669e3f60f5991f2721ccb5c45800c16edfc985ff400c526312. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ES5022201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d39c0601d2de669e3f60f5991f2721ccb5c45800c16edfc985ff400c526312. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ES5022201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231c3e5e4ab4df7c901d9d104231bbf882d3d14cbf6309158b61a677b3886e0c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5022202170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78b9a20b30073bbedbe057545d3a140b6ea5d625039ef372e086801449cdc73. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ES5022202172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8649adb02f492b7dc84b61890b708473224624c82505b0a05bd488075ad32d3e. 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/ES5022202173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f28e70a25611a1cdf9db9d483da3c68b17a9a85f431730697643c5e2c03612. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:53Z), 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/ES5022202174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7414da6a4cbb027427d1bde8a38dfebe24b6e6a7f2007c58e8207455ba9dd3dd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJV2319730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d72f0de23b61f5428216b99b1c0641bfbb8a65441cf31a432492d3cc1dfe06. 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/QZNJY2370441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf37f718720cb770c12cb9e62ebecdd4b7d8a8fc41eafe1c1fbf704554e7eab. 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/QZW9L2364710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e3ddd016c942e4a78afd3b05cf4a98dd1a14bc71844f91c89aa4147b6279b5. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/ES31E2407114.
El Espejo (canción solidaria por la DANA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3797c2cd5cca0d09cc1ed634f274e19e863c0f6f9516922f73ede6ddec9903. 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/QZW9L2493099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e7c32ef5069c2f56b257767e02a83d231ccc41fc44e1c29991cdc07ab6d0de. 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/QM4TW2020558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41f523863720a1a97e39785a908fe00596082d7cbf41989a5132c0fc3318c8f. 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/ES5682000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461698be116de069d3cee7688a12b4826b64c0c3ae6fc2e30f42ce30c64154c. 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/ES5682000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975514730d0bdacfd3a23ecc843fb2f85a1658c0b1ff2d2aee2e7edc5da04339. 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/ES5682000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7378c6c92c02a70b4fea173046d14b4645114a4c635367885a131d08873546cb. 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/ES5682000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e20f28527814057664536025193b0d5ed41958e05b5a8d5efd5af2343a79a9. 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/ES5682000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf938edd90b0acb3fec6f9999841d2452c2264494d972648c9236485c4ed7157c. 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/ES5682000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebc4659ba68496019b15b8b2520cfbda5fe912b0cc4ee68dddc204a9c9041d0. 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/ES5682000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fcc421af8ee2ec271c4cfb7d65e54d336afd4536d6ed87c87e10df202d00d7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5682000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f34308356e75684013f99de4494c8458d7f5e413d09511f376f849196177d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES5682000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a938fe2d8fb02347d391e368b33b62500331cd1b7195b7646d2befc13d7b2f0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES5682000296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85e6372ebe785c1eb7d8b29244d0024601bb738c059eb9020310e454d1f8f36. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5682000096.