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 0xcd54ebd270d8c63b22ea68d3ec949689a205d2f6f8ad9a7bac72e9e6170df323. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea0a8eb2-1e1d-474e-960a-e123f4ea5233.json and https://artists.proofprofile.net/proofs/artist/ea0a8eb2-1e1d-474e-960a-e123f4ea5233.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 0x4ea3c7602a86165507377f046d21b5bc28fe00f6f873a3ce3db5def24240f194. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5752004939.
Rap de Hora De Aventura Distant Lands: OBSIDIAN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4ea2cdf8601edb6ea2888e535b9fba63f15293274e9983750b951bf037f59. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE6TI2046680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29ce803524279fa5fa38a1ff41143006e21546efc393107fc957807a1fb5f3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/SE6TI2046152.
Rap de Hora De Aventura Distant Lands: BMO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740dfac637fc3b3b5a2d74445b06692866128027873f79aa0a4ad75481243db0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE6TI2056666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8db9995e462f8fd6c238b67b7627b3bd76336ca724a4c9a1a70e358a8f568. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE6TI2056541.
Rap de Hora De Aventura Distant Lands: Together Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1705767f6bf139cdbdf0e84c8cc44d45f18dea99319356e0bbc597119f85ed2b. 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/SE62M2106480.
Rap de Resident Evil: Bienvenidos A Raccoon City
Rap de Hotel Transylvania: Transformania
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ebd11e881864bb2f3cfd8566c92d98e3c562e7dec87a73d1578f0d0ed41acc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN62245789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b844ac87d71eb4c56f37ec5ab13720f5025e5d084f75e017f203c9feed8a5. 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/QZMEM2308360.
Rap De Five Nights at Freddy's: la pelicula
Rap De Godzilla y Kong: El Nuevo Imperio
Rap De The Amazing Digital Circus, Cap 1
Rap De The Amazing Digital Circus, Cap. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64958b268a6a489d96e952adfa8bbe5ca9944497c5291644eb34c370ee432acf. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNWW2496726.
Rap De Al Rescate De Fondo De Bikini: La Pelicula De Arenita Mejillas
Rap Del Joker 2: Folie à Deux (El Joker Soy Yo)
Rap De The Amazing Digital Circus, Cap. 3
Rap De El Señor de los Anillos: la Guerra de los Rohirrim
Rap De The Amazing Digital Circus, Cap. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a69200b332db51b06c7bdc77ce15a4f35b752d5528afb736a6b871f8e79b0. 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/QT3F32424221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fe696bc2e861181a45358a884d788f78373717bc487fbb57618ce1272c5734. 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/QZFYZ2593014.
Rap De Spider-Man: A través del Spider-Verso
Un Nuevo Comienzo (Spider-Man: A través del Spider-Verso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38929aa23e83113294ab78baf4e7cc073dc1337438c4e8195275ef2f9e040fb7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZES62586201.
Rap De Steven Universe La Pelicula (Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d46bb0e63303712d9fa75dc4cbf079b15fd23a22fee838119d249534a1eaa80. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZK6F2581337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad06d760e276a720cdea46077f04029570a9772ad7ef9212490651772f3920. 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/QZTAS2536557.
Rap De The Amazing Digital Circus, Cap. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef6c9ea8f2ae7c82af6142c7ee190c4c77766401f2c392b683f7f6917fc5b3. 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/QZTBC2597879.
Rap De Los 4 Fantasticos: Primeros Pasos
Rap De The Amazing Digital Circus, Cap. 6
Rap De Demon Slayer: Kimetsu No Yaiba Castillo Infinito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b15afb51327c711936d70dc3837c4427d06bff7ea55c5f95ffba6ba5cc9371. 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/QT6EA2570471.