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 0xc65898c7de5e4d5f1f754603adf947427f91da001053a61ae6c9ef8d7d120964. 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/8306920f-50ed-4da8-a59b-93679ad68e6e.json and https://artists.proofprofile.net/proofs/artist/8306920f-50ed-4da8-a59b-93679ad68e6e.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 0xba5350b8bd4c05c8ea6798ed2c87ef1be44d0f35e611224f92af3a5f912e1016. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USHM21963953.
Mix Wanka: Agua Rosada / Noche de Luna / En un Vaso de Cerveza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31b57c4eddb3ba3639361c4c463367a5a3a93356eac72c32faa386bd4b69cc1. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USHM21963954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876dcc10e8928f1422b1ae834cdd09703f120b35a3277b1bcf10358989b049ba. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM21963955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dcd03638e4208bd9833bb7526f6c201b3bedd018fd6ec8579c9e14b239fb87. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USHM21963960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070d85b948092895dfc9fdb868dea00412e7575c315016a2dfa25ff679070c9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USHM21963961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b3297c2878b573f1477e4fd7d3b15a873f6659e93aac57364f8a243ea4f73. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USHM21963962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ece50670056c8ac56471944f991da7eebe1ea7cfd7e43f6626993757f6d1d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21963963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871cf2dc263817a83cacefd990786171eb69c70fbaf7c6dde859326bdf9a94a0. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM21963964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efaeb0e6bdf15c7d11067f63154238774b590746df83c2fbbfb90580e5438d8. 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/USHM21963967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36c626a26a54493cb175ea2484ae95b89335e8f3718beab512fa2288eda80be. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USHM21962633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa4d0014b25d321efc73487a82876fde50871678bdf76df34b265f4f7c0bef. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USHM21962635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28df906296be46194b7471fd290621e7a6009fe0fd5b9079b45a06202b92c4cf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM21962636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c89aa631952c96355138f97ac8b6bfa9dd670506f310e43b90a85305227becd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21962637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a4e7336dea4dd1fe278bc3d3de21a1eedc9516c625e1d8dca237373e5af839. 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/USHM21962639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59052aea670c80784caf063b300885f981915153e03a3e9bc8a0042db764186b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM21962640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc52c74ae62b1044046740836bf5e687cffba7168b3004eea9c18155ba688c8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81901169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b835e67eb2fb455f4015e1d024cd3d41f63f4a06fe24a21b445ce273d4f3a6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USHM81901170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a9a2834e33a016426970d3d5f1d80b3b0aaf2ac027a50c6c3780e5585f99a6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM81901176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee22015173434fd34a708a3bced52d5961ea5f40264f72ddb9dbba7f81d54f6d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USHM81901177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1735453cdff13197254b9724cbc984f9d33616beeb486a3a2db689a6116cf5f. 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/USHM81901178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9586e596d23b237f6a7ac6c98438258805ff7de18f2572e584db44920ddaf013. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM81904485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17144674c506bdbd3fe966c9cbe2616c793feb2cb8d4403fdd710e2dbdaf95d0. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USHM81904487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa077b2af0b6fa7f936b977fc3c04296ab3a58a7a89711ec399f2580e42be3b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM81904490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59179284cb205c40990801ec00ca820d3f29745e97f153f02a79ec490ace3bff. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USHM81904493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62441593e4fda69c09589a31f8aa5043974032b9c69b3945edcebe52e716d846. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USL4R1944350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d855cadc478f714f4625ffd2b07447c336848956a16f922d83e3c95566ed85. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USL4R1944351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d3b6e67699606a1037015475928d6e071a850427c3f61c3a451f6ae4567a43. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USL4R1944353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677732991c0d4e0da092c549d37ffd25fda189b279355caf3a85b0b7270426af. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USL4R1944357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54be252159292bf8c50865a16f9d9dc350db5264fc0b12d078c6fa14971acbb5. 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/USL4R1944360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86718a686aaac7d8afb79bceb7d0686797ae089a035df2c0c9af063c9b113d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USL4R1944361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6b54ff7562bbc56dfd9cc87f502888366f2d25a31bf50a2355bd771216740. 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/QZNJX2073933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73ea1f16d7b53d16acf04a88b9653a2652454bcf788c5d1a215ffd7dcaa968. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNJX2073937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d5c5680a20561f76b9533186bc3bb342efc876db359af18136f7798796ef40. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNJX2073938.