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 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 0x0782ed7497774e37a7ec32bed4f9e1add73beaf334fa4b9742b4a7c30191a51a. 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/587838aa-55a4-44ea-8106-fa04823a7aae.json and https://artists.proofprofile.net/proofs/artist/587838aa-55a4-44ea-8106-fa04823a7aae.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 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 0xc8dc9799c7ba326a709f7ba94681d38e73c1b59746a0dcad32531e8661d295e4. 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/USCGJ2042250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751673834f5e361b44927b175b105dc7e58c96791bbd11e01f19dd1e5623000. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4R2080463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c1be66be0049b8c5e11078d68a24313c87e4beae4c85295e04c3d0b812d264. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USCGJ2200958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a91fd8a4c52cd35f10e98d225a156a2908f47a0981bd868df8166ba2746e9d3. 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/QZNJV2257746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a91fd8a4c52cd35f10e98d225a156a2908f47a0981bd868df8166ba2746e9d3. 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/QZNJV2257746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddcfc948e0ef4fa42621122082505f3e2aa3066563400ec12d9048eeca65730. 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/QZNJV2292209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5412fed22d601781c3948d04fa9185b0f752f50790a1afc1133caad3b373c. 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/QZNJX2237281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5412fed22d601781c3948d04fa9185b0f752f50790a1afc1133caad3b373c. 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/QZNJX2237281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ffed05ac7e4b3e3d750d776b38a37682dbb76ebd8176230a361d65ff8e2fe. 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/QZW9K2280482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f7d59ccbadfdf623d2f0cb8d7550f872e4067b33c6ad22a6badc0ae286e919. 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/QZW9L2291986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78489ad3e9f751ed186dab5c8d8b5447c0aaa817266550633edbac21f7ddcf56. 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/QZW9L2291206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78489ad3e9f751ed186dab5c8d8b5447c0aaa817266550633edbac21f7ddcf56. 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/QZW9L2291206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e76240fdaa27f38f7123e96e9c1da64aa15adbd5862ed58cbc5be01f57942f. 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/US7VG2338619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e76240fdaa27f38f7123e96e9c1da64aa15adbd5862ed58cbc5be01f57942f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG2338619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc136850a0c5e23af37732b9b69a7b9b35be855525c7087d91e5a00751346b806. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG2396846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc136850a0c5e23af37732b9b69a7b9b35be855525c7087d91e5a00751346b806. 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/US7VG2396846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef64ab86954960db44d775978f6cb2a4677a3ac550c3cefca98aa0e1b39ee350. 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/QZNJW2340086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef64ab86954960db44d775978f6cb2a4677a3ac550c3cefca98aa0e1b39ee350. 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/QZNJW2340086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abb8e371a231af2b63619b020a5eee22e016ff5adc45d5650a282f3c11d3f20. 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/QZNJZ2367060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7dbab2103eca55b7c42793473555d9aaff4dcc8b15218200ac2793be817d89. 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/QZNJZ2367061.
Everything I Do / Quisiera Poder Olvidarme de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c28a58782501d12a9083a39aa836e90ed7ea0167ce98ea7454c9896076ba576. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZW9L2343481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e3c0aec787c3080581efa3441c4e0c4220189f5a28028dd9a216acc9b76091. 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/QZMZ92576189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cfd480ed77b19e637b16247bf3d3c3ec61959a78b30a94ad79c6dbf4e11ef5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZMZ92576190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b078fb37f7cb1d54b215b25334127fb4029661e5eefe86915e6cdb7c2f7dc8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZMZ92576191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7c8601e0029634a8a17d7ab661afe08e19892234b90e918c1cfad8ad17aa39. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZMZ92576192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524bf3287f8461017d91102f9ff64a31a68d55208f52f3a96011a3bd3d2629ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMZ92576193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e83009e92d7b597a0d4ba3891973c2001cda5c3af8ffe57c543bc76bd0f120. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZMZ92576194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33644bc07d0ecd852f2f885f8154ba0a562b3e90cf4f47828c64bb0461c90f79. 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/QZMZ92372235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47529389888e1faa9833837a00e53c878d0d55c8ad04612636758576ee148695. 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/QZMEN2350224.