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 0x650409571199214a2e685e19406e0637ae58c7311a0ce454fa22d3af84601cc6. 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/8025fa50-8358-468a-897a-68e252febc90.json and https://artists.proofprofile.net/proofs/artist/8025fa50-8358-468a-897a-68e252febc90.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 0x5a8b80c396e0676cb97f8a32ed9c4418df6d8581a59b00cebc24550a6d2f1735. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLZ542201209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10edbd0429bb2debf2a7d2398fd1a9856759e7d2e1ab25129d5972089a327d. 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/NLZ542201217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821e443e55a10c02149fe3ef51e743b70fb2b5f1d5804dde21d4732974d2a4a2. 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/NLZ542201879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba99310eada5b03942fd6c817f252417cc2608d90d304ae752dff0a592476166. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLZ542201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21509604b961e214cde38d40c73e305d631b894546d5d0f35b46b7526ccd20af. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLZ542200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7c3f69179afcef5d3c502fa5239d23fc8e0ffea2cdf2111e9102e0e1bc3f6. 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/NLZ542201023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3682c90d22860e333521bc3755d9debf11f839babca8a060c173ff29d2e23a. 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/NLZ542201897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b05799a25746b453f667cc27411544ef95c7c18c38dd9468a96b78c6737b8. 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/NLZ542201913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd9285a5f7e120d79543bbe91249114d4d8e835863288147a71272351d4092a. 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/NLZ542201907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba38054ff5d391c34038f4c57d2107970cd8cb135bd11c7682e888bf6ef1e92b. 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/NLZ542201910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8c9bafbad81b52a8e5428b881502eb7858d92e50735c1a32c0f0ce1d62220a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLZ542201237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b54625e39905352f39ea7eee3047716ab0c60e7c579caa1bd41f62f623ed8a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLZ542201904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dabb55a72e94d1de94e1a3f6b72981f3e0dac0b4a6f0103aff83eecab10221. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/NLZ542201888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc628808f6cd503e311fe64d36e3811840ac3facd5acb4370b11c5a0885722. 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/NLZ542200163.
Jolene (feat. Angie Robba) [Adam Trigger & Flo Dosh Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ddd1ac9ee186d05b36bcef9c77616ab1a0ba1831e0366b5ac4b8c479ca86d. 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/NLZ542200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc0ac26a68034971de1b17293f5616629281677bab4a2a73aec173f53b8c23d. 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/QZU7C2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83be9e0db972a1985da661f932e27c11af7fca1f370ca5a53400b4579d3d252. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6NC2460310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c88a81e3de9e51979b224c92f8950c3e1d822f4c8e82726570d2f6f0e240edb. 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/GBCPZ2423280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4325b83684da7bc4f6cc3a7687c17124aa4612d10d73722b488392b578888d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FXR752401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85800440d3e0f6d4f100e8bf497e19619d5e6c6298be834284077f2aa791e0f. 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/FXR752400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a63858d0f70c1082828272e57c175a851359e9def4d993de02029f24ddc6856. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZTAY2358161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeece13e44136d355d497386a17b642e39545c7e6a0cf70ab0d356608ab74b072. 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/UKLVE2301397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d895621e4042e52a9b66ff5ea4eb36d0509ccb3454cc4c7599e2353c59adef0. 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/QZES92317690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c4cc4a9d256ec20eb9cdffaecbe4719b8fd7e92b7f539c865711b4a9a70a07. 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/ES5052300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135f4d3c62e157c48c8d99a923c8ae0306eaa39041c9d50546f80b5a87318ea. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKLVE2301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9147fa80ce7c6751fb19072a483d4a92ddf36870134766b3796bec17e65535. 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/UKLVE2201249.
Quando Quando (Nicolas Monier & Flo Dosh Remix)
Quando Quando - Nicolas Monier & Flo Dosh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4233a20e32af211c771ec4ec4e6dcc6ff0692a8bdf78c8802027b0c840ac40e9. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FRV602200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6b43dc410be7bf74759bd47f5c95ca63adc46277694d5b7ede33e62a3ad5f. 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/QM6N22286559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ddd1ac9ee186d05b36bcef9c77616ab1a0ba1831e0366b5ac4b8c479ca86d. 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/NLZ542200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ee47441620332a5a6c509546d975a339f13bd931bec0dd7b25e80d69fcacd. 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/FR22F2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94975232596ffd5550da330482b9d93889f62d098b72d1282ace33effa89d784. 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/FR22F2200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22073acef3f14e0038fc72bf14c36ad878df8bca0ae5fcb63a0ceae41bda4119. 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/TCAGD2250279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8c9cde21e3d51dfbc4330363676a2fc9c5dd43f82d786ba25d53e4c6835da. 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/FR22F2200040.