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 0xb894e76a27d95c7ec16edb40349e611f36d39b0ea4d25e3edfb98a469e287ecc. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2177fdc0-98af-46ba-b31c-c44bd9c3d29a.json and https://artists.proofprofile.net/proofs/artist/2177fdc0-98af-46ba-b31c-c44bd9c3d29a.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 0x47383c99cc9099b3ba502715a35b274ee6d53c23cb574fb8787a357c7241d691. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZK6J2046923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fe467de4444370ee3146f2500cd928de66239ce78eeb90f3f6b8661c04d35. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZK6J2046924.
Las Diferencias (Paz en Este Amor) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb0890d85d9041e6d983d2c1cbe76761ec451c10e19e85dea0986d2d5c15208. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZK6J2046928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ebb913c340aa781b9ae28c2bf52a62eac668d632d0d6190fa98e9033746944. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZNWU2243475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f48cbde7172aab2d939ae5c0289af98f7210edfd9aa830a8ec9903bd9c9cfd. 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/QZFZ62254768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ddaf96dee9fb838c71266b6a517e567d8ac24812f8fe292da7c60f8313eb63. 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/USA2P2124556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda43c8dbf1975b87be7902fc42cb820054dc35216a4f1fb79773e6531804a45d. 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/QZHN51949259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258d2be88dcfc5b4b6bd28944ea987fe52c9b6860fb3e3a452d35af39b0ae2a7. 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/QZDA41982862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19746fc2dc2b4d259d6cd2d5cb0fd6359dc8101fc88929b964ad381e13290dca. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6DC1894053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54836a36149982710268d33563dfe4d2a36031e4ea759bb4e0edc92eabd06cd1. 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/QM6DC1892530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf329990d9995ea846848492c72118b0ffd91bdaf830613df7ee74a2ac9e1b4. 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/QM6DC1889176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee30e9fff1a4ee870b7671b58649d4ded9691ae92edc344f9d600cef1c85e30. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM6DC1881337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138fbbeb811d44e758fba082381330d39321d283a0afd76a6832b1ed71fe78f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM6DC1877267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f904ad602556e7fe1b1128f806005467c99e5675d9d8b7a43ba4d09775a2b5. 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/QM4DW1841775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e1464fecd3b02fb792da12499fcc1a03cc955bfc6865db5855490936cfc177. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM6DC1881597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a691ebbf3c07fe0d01547fffd5010736487226994c9576dd35356d3d98fdd98. 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/USA2P2147088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ada6ea119af30121508f0f0f86f2243883ffc88662e10b343bf48bd7137857. 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/USA2P2147093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190d78a4a39b31810207ed629de579e10ca855e4b334d33812f6f2ebe0c791c1. 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/USA2P2147092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3184765196e2ff5047f6d0391e340b3c49657ff95632d7cf07f6675e6c927fc3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USA2P2147091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6406d3b94aa86be8658abd3610c619a4db9d12aecaa5d29eb5260bc13f1272a7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA2P2147090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8050ec642b3d1e45444d52279121b5c1a198519cb50762503966b0b331973df6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USA2P2124190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5520df0153f898192f52034ee0b5e298e26db50dc249598293ea763dd7d7cc6b. 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/USA2P2352332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29bb3afb9cc3cdabafb6c892b2b3578281018d32cab7410095573161eda25c. 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/USA2P2316431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d25b85279b191937fa5c36314865775e5ecaa8db6a328219bfa5f8ca2db3e. 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/USA2P2352465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c03e5acd95346ad077c2e20c85524c5aa42ebde07907eb87601201853157b9d. 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/USA2P2463296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da0f4ea81ea737c7982f7187ac7aca0ee079b9a945b6993470543e34e19f4fa. 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/USANG2125206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4110030a8658e2dfaee217e47f1506c50163d1f93159c0238e89df754b3354. 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/USA2P2427776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2380911ebaec1467591765020c4b1568d17745ede06507065bde2ba9a456bcb7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA2P2315053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8120d11da258f91680f8defccfb12f33022b8aca9a4af17af5e38576b1dfc6b8. 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/USA2P2345507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8c6da4226de1ea02d458bcf7550bd1a6bcca318a94c73a08a7aa3447a2d9f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA2P2317190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1231a5dbdac6c4dc96104573c8e3a15304884d3666ab567040b92d438f2e69. 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/QZDQH2263494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4b1fc9c8601109757aaddf2621b5d1b5c2dc6e84ad469b945885512a5df2ed. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZDQH2260169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c07592784815d73d4b9f64e5269465f6b0f4508b727cd27f7212f9d4d9f3c. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USA2P2317194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e09e2e7b45708133d6ba759c0f802dc9ff2974e614157d23c2bfc7e3c4dbb6. 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/USA2P2477010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da0f4ea81ea737c7982f7187ac7aca0ee079b9a945b6993470543e34e19f4fa. 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/USANG2125206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c667811ed2e0ee6a0e5747458ec0721ae80f3a2fd3ff40cbe0a8be587c63077. 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/TCAEM1942267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b7f1439ffadd0f781b41b614c305560055bcc96de17396f506bc086a9d3efb. 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/QM6DC1891377.