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 0x44c836d52fcfc736629ab496f9444d8d13e2210f233793c11d6eaa618c84ea15. 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/154751ef-b72b-4154-8622-2989841dd0b7.json and https://artists.proofprofile.net/proofs/artist/154751ef-b72b-4154-8622-2989841dd0b7.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 0x3c93fb816c6143d4ed6d4db0098d36cd84be3ce8eeda783a7ea58e0775e1322b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUB421900609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a4944df2fbfda34e37a564949fa35343b016bbb7e90bd83bd6e0bedb49e15. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/RUB421901415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e38baf8fc7e23cf859c07e3503d7bf9fa5bf5c34be04076d2fa1f71b91394a6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FR10S2076454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db753d65c758741bb0afc187791daeaeddde5d6b17c7ce3af5393ed5f27b405. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUB422002664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b0c280012672e50606b5ea2f5ae0eea706659a6c7084675807add5d9d6467. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/RUAGT2217585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc1189b93cdf3c4cf63acf48973feabfc9bf376414bbf74fbbfe07c197e1eb. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/RUA3R2324921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e956cd1fde76da863129160187c286dea7281d2958bfde86e507f2b354228a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/RUA1D2431173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214e77dbea0f7afd5982df56b4af6e7668a4d4c061089cc92b72e489fd4fef8d. 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/RUAGV2403601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf3cec4779e10bb8e3a3423562c3ab0d4bb48b177350a4e703b47ffabc205ea. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/RUB422401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6477871e2524eafa4633d93e2f3a515794569747f36c7a9c3dbab3305d660acb. 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/QZW9L2432989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aceb83f26350d4fb2184a6a1d35cb9de77e71bedf32235656209cac9039ef0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZGLS2501746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27dd288d511e5d54a274ed8bc35fb7b8d88a32394e0213e3c927a57104879fe. 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/RUAGW2504408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aef34bd5e6522e9c494d7b25a3ef85fd729fc60acf66923bae1c00a07eee83. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/RUAGW2505374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b68a36f772e4398a0833a33e219687503553ef8174fb99314a4fd150c7b2f07. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/RUA3R2392460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195f71164d1b1a5ccb511cf6b2cc0933415e89c1c41dc28e22cf29fc73867c89. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUA3R2394678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0714da47d1c5a4ede1e3998d6979e47359185585380e4aad3212b0ab473757. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUAGT2593797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af0e63440cec7abcf5c530774746f43b9669fb495888e82f07a9a39a5f19062. 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/RUAH62507900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020614ed63c0416009b53f6075fcfc5082515b7f6c2a04893bd5756e0d5597b1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RUB422505133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd824db1760be6299f723f2b1837a10797b18793b02f3e9ce0dbc9034777cdaab. 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/BEP011700001.
Old School Romance - DJ Antonio & DJ Renat Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0d796e7b80c2183c0c5e06b10d1ee2fc185dafec5a768c010b25a43bf1ac6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKG4Y1700061.