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 0x5bc62ccb8e2d3f4c3fa6023bcda1cd575b581e806da10ce19b8dedbef7f22276. 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/3c77aa94-fd7a-4226-b7b9-f60c1fc9d44c.json and https://artists.proofprofile.net/proofs/artist/3c77aa94-fd7a-4226-b7b9-f60c1fc9d44c.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 0x2532e1e8c705e6b4e74e30122a6d913194467f272859f1b21a086b0ea6ccf255. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARF101700231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b80ef8fe343cb825da460e0f489006c17c93239912c04bb0ef0160c55677a2. 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/ARF101700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5065030c193d08117a5927c972ed09b96bce4ef7edfb430914b3da681b4ebbbc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARF101700236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3a86f4183e2e649dda9a0b893a0cda512afc937e2db3570dac9b214f445bb. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ARF101700241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe9129c76594bcba4fa72f6bb84bd9cf19e7ab65db35d82f4830a9e53791a2. 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/ARF101900170.
La Colina de la Vida (feat. Chancha Vía Circuito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef7412e04888d7a29030950dfec5b1a875cdd84c3c06a68bbdc47d785745a42. 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/ARF101900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc148c8b7c0fde9f5b5cb30d6bbbd20d146697de59dee3a4471e19279f40c01c3. 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/ARF101900172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e790e96e15c1413f24b8f5b2241ddfc9d7109e03402b0e92ffda54348bbab1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF101900227.
Soy Pan, Soy Paz, Soy Más (feat. Tremor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535129f7b010ed3d81126523f06e336eb3e1fd74a499ddc81419024badaccd0b. 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/ARF101900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454d33b4c555a802fa94cb7e247ce7796618070461ea1ab82a529fca88d3b37b. 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/ARF101900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45759808ccfb9eb91d04c9addda008b31a946d9538bd2eca85180cd7650cb23. 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/ARF101900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd094edff722c040efd8c218f003b031412194096a0f926cf487b3c9458fa6457. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARF101900177.
Sabiéndose de los Descalzos (feat. Nación Ekeko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa58aac3801c38d5abb71abcc29c3e2b26eac07d3a7d17cd31fe763b8bf0c23. 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/ARF101900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9029485c1916ab883b55001cc806334c8d207599edbe8d272e764c4a9ac86b80. 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/ARF101900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d349f0d3ec8bd61c310d9ab4e110f9c090ad7b19c45d7617c98c8f6e8afefb. 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/AR8TN2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28c15e6a7e89b8568c2653fdda1182f72b841f3754fcba6b6a3cbd80695b4a0. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AR8TN2100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d114337d48dd9a763202ac8e83987a465a508dc7ef47bcb952420efa3e0e4c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/AR8TN2100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f856355eb7e2be75bc382cdf12c5298925681b0f22c87218d8fb6507c1ef2. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/ARDCU2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777df245da712d44f837a2f3b917a8d942cebade1e8600de21c84641ee630b60. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ARDCU2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546ce1fcd65e98fa7f3a30e24e27a749512215e81e5448c9e64f25d147e0047d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/ARDCU2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b67bd3781364ef27caf049ca0e73ce90183071ac28f9b168e27832c11cedc. 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/ARDCU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d57441f37ccb263ed84c25f2759dd2ad0df4f8ce1ea01215cab7ae20c1f862. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/AR8TN2500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac12235fac3d6e09a1fa265d867a602440873cb1a38cb9bd7beb10be1f904d55. 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/AR3692000021.
El Camino de Leda (Un Tributo a Leda Valladares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6602a8b435efbcb58b855d86c67ec0807899a925f7137e194adae0be69195. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR10S1929114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026fd04f4cded0fc1bb0c541a860bb09526fcc1fcd026a0912cffa38494dd67. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARBPZ2300002.
Ahora Coraje (with Nahuel Pennisi & La Charo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4063612c2a15c9195c3e6d65115681402660537fb996596997889ed4f319bdd4. 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/ARF101700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfda3896c1a6639d824843a45bb93f9e0ce1104e062b4a2ad8ed20077a235042. 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/GX3Q92076968.