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 0x5209e79d85ca4e2db956e52ea21b10e35c96dbca3814edcb27c2ddc531c2afef. 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/33014dc9-c8c1-4421-9fbc-51dfca877706.json and https://artists.proofprofile.net/proofs/artist/33014dc9-c8c1-4421-9fbc-51dfca877706.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 0x14c21f2bf1f71934da30b555b220b5820b83dcb63f1d93358972c551a1f1e99c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PT8DW1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5327d59a614ea8c418ab22c03caa77cad25543ea7c8efbafae8f02d98960f. 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/PT8DW1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a27a9760dcff556b9667869ea1bba23a5bc9b0ad34dfd11be6ea94e03ec3c3. 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/PT8DW1900003.
Só Me Apetece Dançar (feat. Ana Bacalhau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0404d3f045a6dc47e6eb3162b82495d56060df355f2bdc48b9935ec14a11beb2. 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/PT8DW1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d9ec6f5f045f96a01f7d514926f5e5b07ea3ae52293135e66bcc4cf56d122e. 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/PT8DW1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9884024924caeb879d891334c3f3bf8f71c7ce0b6319a60af15d2ad7407a6d. 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/PT8DW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1888a95153684c723793f8ce131d481153d15d2abe12936b72de67abafde17d8. 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/PT8DW1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c21f2bf1f71934da30b555b220b5820b83dcb63f1d93358972c551a1f1e99c. 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/PT8DW1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ef48e1cef79ee2a8ee50207c74c89e32b0dc1c6bb017b2b904a3e275850aff. 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/PT8DW1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae06783b95e7ec61dea7b76a0f8746ddb292bf7759ecff4fdc6a838c01686a0. 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/PT8DW1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a27a9760dcff556b9667869ea1bba23a5bc9b0ad34dfd11be6ea94e03ec3c3. 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/PT8DW1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5327d59a614ea8c418ab22c03caa77cad25543ea7c8efbafae8f02d98960f. 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/PT8DW1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c3c9258b9d96608968502ac9bf1d9d3780c2cf226a9b5416375d49d7465764. 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/PT8DW1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4acee9da94f6e7ebacdf282d88a7be9e299f638c7ee8be1fa6e33e70eaf5ee. 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/PT8DW1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a2d2e08661c998c750f0764af74afd492dec8e576d40fc344fb1d2156d4ef. 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/PT8DW1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9d886ee85513d711f57a6c7de24b7716754ffda6bb1bef7e585335af6a17a. 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/PT8DW2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3eec7faa5fea445305dd500d9f1b8596d4e339263ebbb860cd1defaf8215de. 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/PTNO12200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f080bd4999339c1ba0d74a8613bc4f2d39b9e16737dbc7a104c2f3d7f414b5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/PTNO12200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9e0a63bc61a6b3db5293a496daf135c14837a653bc8db28987cbe10435a65d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PTNO12200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ef6eee5711b11f8a2a83149f04eb058b4c493b9b5dae11926589fca2f8e0fb. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:55Z), 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/PTNO12200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc268656727a43764c7b966506e60f0959952bad1ebcb486c37d1cc34f1bfbd59. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:54:32Z), 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/PTNO12200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ef766aa4e739fb012134ceaa78ceb9066649c160d370fdab21b787d0952773. 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/PTNO12200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b434b688b76a6ef40c25f5e643cca77046a142a07151662b34366d50bd6ae4. 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/PTNO12200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdec73995ba305fe903d75e51a6e0c3ba5ac748b49141b17a28423a97cf2460. 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/PTNO12200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aee8445cd92abaac77bc9ce96f38359ad0440d4c44d05fbf07ac2a466dd673. 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/PTNO12200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eee39910c5bd96cb35da38d5a9ea85cde1e9ce32b637bc1a4c4b2fc4912535. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/PTNO12400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321bf3ed0942793ba8eebb514494395a72cda658e3237d6ed63ea451a4c6205e. 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/PTNO12400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81bf485c4c22b8fc9b0bbb0a9ca29933bc09e3f02dfc26932a334bd14388ade. 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/PTNO12400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f85b2d49284efa1a06e9eeafea6c7f66d6a40e95d5a8258361b457e723948. 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/PTNO12400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a78a6a053948b1e4f4f609ab2865cb947684e8bc9fee614c897d53bb3b82dc. 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/PTNO12400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4227508e1fe80bd2cb03d0cd1ddf36035c0e533c092506f985d7411fc44b95a. 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/PTNO12400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513be0f18840e1ce7302bbcc975f6154cc5159aee6ccb95c1e402f88b205afef. 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/PTNO12400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d8924daa0fa18b9c861f6ca36eff4850eefd6bbdae0b27f25ccf9e1864813e. 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/PTNO12400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1724e391c841d8a7f14e52835583062fb350416a70ea40ff38176dc6edbd93. 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/PTNO12400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710dd13344db39975462bb69ca9abf2405b6bc533eeded0e615ff4c59d6849ea. 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/ES71G2142117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9092597de1cf3c16effbae2909a4513e0c763f79e507c9ce783d3b89ebc0f. 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/BXPOL2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40262e74b3ac0663687947b75881dcbb46aeb3f4c8565c37f479a1410495ac26. 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/PT8DW1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbb635d8344e211f5a6e126adc6a46ca96b442535630441571adb7f4aa45be4. 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/PTUM71700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbb635d8344e211f5a6e126adc6a46ca96b442535630441571adb7f4aa45be4. 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/PTUM71700339.