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 0x406dd223b399eb5e68ac3dd72b88f4223047344d9061e867e348e08b30830f0a. 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/f56e17c4-be95-459b-9896-fd1d833f656d.json and https://artists.proofprofile.net/proofs/artist/f56e17c4-be95-459b-9896-fd1d833f656d.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 0xae53f5dfff9c46e41e6e2a09d683200563b60dd40167875493f69006fa67576d. 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/QM6P41921276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cc6e75435166a21eb729ecc6154ded75e229618179dff41974eff2ad5bb8fb. 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/QM6P41921282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b7dbc360c47dfb42db52cb2a3b3056dd37943636986c9c9a75ff526b4ae35. 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/GBBFT9300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9049d7dc673d818e0a3e292ddc09b9a4162fc5b4d95aaeeb366198aca9b6f8bb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBBFT9300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9747248e1c25d3ac4ffe2f0f577f568375db8366c9ba2b73a864ab5affde250. 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/QMBZ91667330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb18c509eb1b4e3ef162f0c5be6627846d3449e295acd07615962e0ce1e787a. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QMBZ91667331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613e707cf407e3aa8c46ac4b06ba724dc3e2ea37da271935b8475858d42032d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMBZ91667335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89c40d7aac15b89c7e8ed753c5686900dc944a265f4fc583091dae2b62860b1. 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/QMBZ91667336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec098e2c50b0f11e104293bb205ca3184b699bc6ef0de28c27a9b2d4e7d69430. 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/GBBFT9600035.
Selección de Caporales: Centralistas Soy, Saya Ardiente, Centralistas de San Miguel, A Mi Oruro, El Gran Zepita, Mi Propuesta, La Lluvia y el Frío
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b842378d5d0487787db3a4d025c664c0c93c72815a9b57d039f8cc2614af7be. 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/QM6MZ1724865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e25b1880e183b76e7b1400034237c1c0ff4a2fe9196433cf0f90fcb8d778070. 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/QM4TX1738953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0cb3ccfa33f76faf48b4b69e25626a95fa98af0c7bf52c41215b44e0cc2c9c. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QM4TX1738959.
Selección de Sicuris: Flor Hermosa, Tesorito, El Imán de Tus Ojos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576365356df638e787901f71e5e4d78b96244eb40cfdf2056d03f72e3a851deb. 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/QM4TX1738960.
Bailando Morenada | Antes de Morir | Jacha Cultura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c79b4fb2859165297c0349d05d1a0cd8c7b37d82bdcb8e588c36eb26ba320c. 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/QM4TX1735585.
Morenada Eloy Salmón | en el Cielo en la Tierra | Pasito de Lujo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02acd0732de469ea4be894f477c40980ca6654c6caa42d615cee93b4d2c09745. 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/QM4TX1735588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3275965feb1d0193e6bc34c8e3c3c2ee60e27db56657bfc8cc83134c7233a9b. 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/QM6P41968031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1046e50e153d4ffd863d1283d3c4709b7848c454ba27d742b5f754b5390afa90. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6P41968032.
Selección de Cullaguadas: El Extraño del Pelo Largo Vete Ya, No Quiero Saber de Tí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001538b917363607cab915521ba99248fe0dd095cfb039c5af0378c4e0867b66. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM6P41968033.
Selección de Huayños: Agüita de Putina, Lejos de Tí Noche Silenciosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da76cdc4d82f14b774a24574e64e5daef7d7cc70b9c3666cf837a392e9b479. 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/QM6P41968035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ebf4c5a0343ba7e0d392f1f362638aec5b8f126fa480b72f3a84de6671b1c1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE9822062353.
Selección De Morenadas: Jacha Moreno / Morenos Collas / Illimani / La Oromeñita / La Mariposa / Morenos Alegres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02cbdbe326d4f1a9ce4734101df55b978fb2a0bf431347d8cbfabfa6d028ed0. 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/SE9822062372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954522fcded400f07087f14228568209d558ceb4f63d920d9f6bb03d541f7c57. 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/QM6N21918335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb80145ff85d6ccda5b5ee15cd07b02181536f7f0e8a28a63f5fe7c93c236fe0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6N21918346.
Selección de Caporales: Hay Rosita, Amorosa Palomita, El Amor Se Pesa, Poco a Poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1314c56455f6d28c4a0faddd2400616135b3cf6b03c037f0ef4f83d7a24b50. 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/QM6N21918349.