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 0x1150e692806260456c1bfc44f07f4a16ad4f81326e07841d8ec2ed32c94f2ffe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/744f732a-8a74-4762-ac80-a3bdeeee8b0b.json and https://artists.proofprofile.net/proofs/artist/744f732a-8a74-4762-ac80-a3bdeeee8b0b.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 0x4d00d83a480717a9c6b2c26622ca1b0283fbd28d0e7d7f2130b34979d13a69d7. 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/US9CY1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98be03c8e1a21685ff7970b04bc38caf4986dfc95e083ec780009e4d9bb2cd59. 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/US9CY1500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b77943354cb82dc0b4d291ba887e2b092a2cca3ecf89b2f66ef45d8b50ef9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US9CY1500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b64aed1cbe9f7b4c544e88801fd90d7fd8811cd2d89691867765ac80fadaa2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US9CY1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4f6f3ce369068c6ea0b1a3c740b5eeb6a7086caaeced0b907e12a11ebbb2e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:00Z), 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/US9CY1500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ddab99683d6c48b309ba77e49590dd4d46cbc802427f309f67201501cb031e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US9CY1500122.
En Concierto: Una Noche en Buenos Aires (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd2c352de4fa4ee0124d111552b8e289857a55e8418f09e78eefee8ca55166. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6N21966605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe07e23e45c80b0716b6ec6625380d78c4dd7979047cea841efd8c002ae15b5f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6N21966606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb12a1c5d401f35fcdb72ac0610bdc207fc7b75f6ac66f94c44729586a4093c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:19Z), 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/QM6N21966607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af386379c715830ec5eb71e0c317863662e8bee5ea428ee3461cdab5d279dc2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM6N21966608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d5bb080d0e1ccb8b0db0820b915f7f2320cb01d84b424e903f990c72d0cbb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6N21966609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f2401636c80bf7fe6254948bbf7872cd4dcb710d3aaa1dfa1bf641fe0f85ce. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:24:20Z), 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/QM6N21966610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741ee6089cf52ad76b318d74f6b928f1caefb29a6bf84dfdc3c2c07d49bf1a1. 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/QM6N21966611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42150b5708a67ed3e0201a7913477e78108e6fcdb596327bf9a4da8ab0e22a6d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QM6N21966612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4df079c171a4e5329accf4f398ff80c3af4c681661ea7da224ccd437dba2f. 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/QM6N21966613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3677252c5ff3b4e4221a21e48ea4ce665fa04c741b8563fcf53178762e12af. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM6N21966615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d166c06462cf0b99e15d3285c57a37dad2c35fee17a0317609630de431994a3. 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/QM6N21966616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3489056bf14c17a4e50c0a8c0873db0bc90b1c221fe7fb76d31638d9253eebc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:41:05Z), 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/QM6N21966617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d9b4ebc082a6356bb8025f83cf87e1aee417bd9719a20aa585b07de92e41e0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US9CY2100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25425d44dea3f47d813b23c0401c12cd10bdca92d90f796f19049e51892d08e3. 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/US9CY2100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555776f4e40e0168a9aaf61fa9695fa6b5571b84da22b0da30c9d75cc0154147. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/US9CY2100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3878fda01ee1f0f0d418a34790ac6d831b29df944053c76fa7324d5bbbdb6345. 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/US9CY2100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab9bc1a03f7a463db81bf0518eccb2feda0eb358a716fc26dbc2859597747dc. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US9CY2100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b56fdfdee76f26baca487ffbdff7c54d1337211818d83e61fb5514faa2341. 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/US7VG2314638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542948a3e0ffca72930023fe82d711ffcc0c685361d05952dfc9a184d47082f6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJW2493863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e2c3efbc69a3c8861a69127a78836a7eecaf882190c22ccd95dd7105c617d. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM6MZ2005792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f0cc13298c39c1941aec1a9cf74dc57f8a22d8d4fc81729821f4873edf7bc5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:53Z), 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/QM6N22098763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa766fee8ae4afa72258be8e774aec109e64fc3d851a7134a9031a114c8d5667b. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZTVM2401813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e630c8a90a9ef92370015abd0cddd61fd5b9191e9830d0d0025e4e3365496e. 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/QZTVM2401814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19527c822ae987e0069c0c15f401641b541dbaa5eedc09a6341cb1ecdb6497d. 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/QZTVM2401815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b59a49c6b2ccbecd92122d0d0fd5e26edf69869c111ea278abeb787409c87. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZTVM2401816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b103d7c6e0f82544adfbca842de5a7edae8803d9f342b288566c63b5bf089d6. 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/QZTVM2401817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1debbd91fb09e01a783a493e93726e75b1ea2126b409424f77da890805b2aef9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:54Z), 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/QZTVM2401819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae0cf44e97ba07f720df9be35c295b29aa2a8a13352ed44d7599048ce7ae95a. 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/QZTVM2401821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0229ad449b2360202761ee587f5dcd49cb2df2b1126d451614249c5033e7236. 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/QZNJY2599172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01749021227ff0c8d4ad9d8255107c8bb9b04953a5679be41c008906f124166. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJY2599174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723931639b432ae0237bd42a7a153fec24a033c66c3c66d577c8169172d72470. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:46:59Z), 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/QZNJY2599175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e47641827e74da0dc3773da85c5e81598994495a21486f359a87755c4555ca. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJY2599176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd8c0f4a8fb94765bd69d8fa298759ba8545fb066905181698f0f272a0a62c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNJY2599178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11df7e7e61daaf141dfb6057c00619143c374122886ed31e1bda7c41b6212565. 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/TCADI1758314.