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 0x7b2e6b1da57ed944522ead9883349a50388912c1df33406e39103771bae99632. 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/c81a3686-058d-4055-a967-a1137357f727.json and https://artists.proofprofile.net/proofs/artist/c81a3686-058d-4055-a967-a1137357f727.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 0xee21ef01da19f5fea5353ba57d8bcb96800c102352b5898a5cc5093a9ab40c07. 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/US7VG2574291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134ea4b5a8f1091d7f1f2f8de0a41ec988e8260ef46c8c4019dc22b1968ef30f. 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/US7VG2574293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b6ae331fe4202095a323117eeb253fa94b1503161f86f6db824565680a12d4. 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/US7VG2574294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a69f3a11623ab2b9e14b88ff02f0174833d25411ff8872203ba2151cecf1e7. 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/US7VG2574295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95c3072a1019d177e3432f4954ccd59a0b2cd6484d7012e640c40ca7ea46972. 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/US7VG2574296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126569b55fb31d60373f461a69089a1dbfe4b6bdc2f12d082784c1176a0245c2. 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/US7VG2574299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3d09d5cffd1cf5b59659e44b00baa6f43ebcf6f66a93e648c4d266f4e0c2c1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG2574300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd50e73e9b07d33ab4c4b4a89fa0c325d84decbf46cf61e00d463fdc83588664. 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/US7VG2574301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5a4605dbbb2fbb0ddce278ed0d89d1ad7053e2e957f2357fc0765c3c167b62. 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/US7VG2574302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa77df5085e1fb512effce6ac446d64b5553ae9d171c2248d895621b009a801. 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/US7VG2574303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff11f21646102f75a0c33dcb860bfd475fa90f6b143a299ef9799121709421. 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/US7VG2574304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea65123bc143b3b8314327686284ac7b9fb471c3959144f872922b9a0ce8781. 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/US7VG2574310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb250dd923959859c7773a8caf4486f476cf8072766a925a8d3d60ea01a781d76. 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/US7VG2574312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec91ed1e877e0b04d5b20d2dc33d007ddd04ecfb1899a58d238704253bf9c697. 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/US7VG2574313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0250b526105340fe2db66fa6df591ca85450c1d9b70bc62e62bd41290bbdfa1. 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/US7VG2574316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67558b4c3e6dbf6828164b0acb565ca97b48e63f3c43951f8b8ec5db5aec5186. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US7VG2574297.
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 0x027ee2076275b6d8ac878255e2d9981f0386e01a0554da4979c0147b892ff3fa. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/US7VG2574292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821c7b8d189d0410fd07ba104e26fb2e36fbda1ca7663fc730e6ebbaf68d673. 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/US7VG2574298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f44db41ee458f2e9b7cb840e7adbafedeee8b64b5f86ff360e5d070c6788d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US7VG2574305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ea7a6b5454a47d6b249b38736b7cba0e36ff3a6890663d57cdb36e9361f149. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US7VG2574307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ab9039e9bd873ab130b44161b5c3f19fb99dc7c47a8816e6c72d6e5c1efc6. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/US7VG2574308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1435f28e08495a67588c19c711a78395b4476b0936875b05ed286898eb049426. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US7VG2574309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4e7530a52969fa05f0082a96efa3fb7214002e988ff5d52bedc58883dc077d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US7VG2574311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0831c5335c3cef71df6b06f1637d450c03eb99fca570432347b59890d92e28. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US7VG2574314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e64beb55da59d38399845e6070566c62b177d67dc2904a92f36756487623bc. 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/PECHY2401098.
Me Río De Ti (Tendría Que Llorar Por Tí)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88538843311d4acaefafb26571b4ee6a86b5901e0a51bf3fc0c9185616ef64fc. 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/PECHY2401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f5dd60c64cf511f7bae8d3f2c4530de3717ce686e256d9b499519a3e014fb. 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/PECHY2401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47635d3c9f9923c05bce50c4d1d9f0bc5a6ef2dd7b48a1223772fb9e3512fd6c. 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/PECHY2401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e33b508f53a8981e49d82c7cc15662a31315248f70006b5ef7f38e4bb05f4. 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/PECHY2401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da84807bf804ad6aec13323289b4c88b9bc9368d74beaaa1159b387493b0af. 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/PECHY2401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302df09fbb2ca8db4b5786dbc893be955644908deda3b569516c053a4c9336d0. 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/PECHY2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766ccae748b0eeadc823a4cc07e5e85fd8c4befa29d55c7110bbbcf87fe151ab. 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/PECHY2401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73411f73f0902367fa28a49c6c47e5bcf009c0dbc6d83f7ce2047493d39657d. 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/PECHY2401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ec6888235c14a43f6722b6f8612788dace6f2efa5cc0b58b137b2341071fc. 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/PECHY2401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f413ccc7767d22395544f16e4f9b9eea3bc8940b0a88cfbe1aa4daa106c9eb. 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/PECHY2401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88bc2a642fd68b3ac66f78082d77834a023d53a8d607e474072001dd73172b. 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/PECHY2401109.