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 0xf8d4679448a47d3c2b54065e5d1667e9599f8430e3ae274354c101e8035e60d6. 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/5296b71a-0763-4e78-a623-957ec7a2994b.json and https://artists.proofprofile.net/proofs/artist/5296b71a-0763-4e78-a623-957ec7a2994b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Al principio... Boleros y al final... la juerga
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 0xbe3ac5d2f4e02363bba8819760b9c2bf2b1740612790ba60494ff7daa04ea403. 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/ES5078700231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc108d5d3be5da5f766b5ed5430882ac7a52604b8b54d49090882fc2b9b58afee. 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/ES5078700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b36f0083df1ed80b15b8ea313a7ecb6a9f6ecd50204184caeed3ca41fa41097. 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/ES5078700238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b89256ae338b425b7efaa8fee00c283caba41fc9c0ad3e0d340bc08dd40f81. 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/ES5078700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399c1b0867e9619d84b15da3a555fc664fea6b239cb8f2aa18020dfb9dc771de. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ES5079400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff4f669b0485b5415b2be4cb75847ce0802a8ccb0f521c19f597efd68805de4. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ES5078800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c52f6dfdd858ddb2f63ef0cf3a724bf54bce2e524ab8f4f85c702ddc0b4dd46. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5078800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa9780ae0b3589562daadd34aca2dd0f7f64b76b32971ecb6dd77e66ed7862. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES5078800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a87305d47bfadb03bb492081515918a490112059a2b20811aeac4b4923e15c8. 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/ES5078800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b71d2e23a349b3d61d7dba7dd062f1954e0cad3df3c2609d00ac6fd8c99535. 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/ES5078800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f89298ef869bca164b31ab5d5306cc6d9adadf1b8a3440d0dbccc8222459580. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5078600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a8d98f682eb7192257c017ccfb62662f47302168973b0f7c8887f87d979fbd. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ES5078600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f583afc536416070399e8faf997113fdeeafec3ab03a84e2e2ce53d5cc3ad1d. 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/ES5078600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9671dbf30734d09fc42f52ba80fbdb50d2e390e215b7013205c039994fda19ea. 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/ES5078600044.
Al Principio, Boleros y al Final... Boleros, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a71ccc2e88d3fa7a81109c81a652d63ddb3034634dd2c9d0e336322f2060c3c. 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/ES5079400561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4288295947ffdeac0a70a13cd87d468285e6a0d02be88d94c7dcb689a3fd7. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/ES5079400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eee77456aba900402ebfa7cae98b25e8abc1f0459c82726a9819b9c07a444f3. 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/ES5079400567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d24b9332ed28246f64cce61b7056e240986bffdb677200788eee88133bef8c. 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/ES5078700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cd37f2f17e85be255af71b24ca6888040d32188cb5bef46a57d18e8883aada. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5078700247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e3f6fdd179e001afbd88c390e1e92fdbf4afe9be07f13dc1865282aaeabb33. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES5078700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881879138ef91033e6881381a7bd06482d3832ab29277c6b04ce7b2f711eeb8. 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/ES5078700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29eb0ca174b81c73e5d03908bf411a7bf237a85267cbe53d85280a68ecb7e8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES5078700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c95029e8e4a8ee9fa51f1ec07270b9f0dfb63b0c50df6fc7bfc2694363c059. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ES5078700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3181b731b55f7ada16ae2502e16499a9df8ac82ada6c73393a0ba107371dfb10. 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/ES5088400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941f61593b4dc2d11b18e71659d39d8379e62238211366b84363e42570646656. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5088400043.
Las Mañanitas - Caribe Rojo - Ay Cosita Linda - Cachita - Mama Son de la Loma - Parece Que Va a Llover - Mama Ines - La Mucura - Sabroso - Frenesi - Camarera de Mi Amor - Luna de Miel en Puerto Rico - Caribe Rojo - Moliendo Cafe - Cartagenera - ...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d7c9c8dea08705282e6b94dbcc634e772b5b89069d965d659045ecfe63952. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USZZR1010284.
Tangos a Media Luz - Canciones de Toda la Vida - Single
Tango Del Alma/ Uno/ Volver/ La Cumparsita/A Media Luz/El Dia Que Me Quieras/Caminito & many more
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ccb9e38caa22e70c764f1de98c66025adcf5cf8e27a27d851cceaa6db4868c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USZZR1010285.
Maria Dolores/Cuando Vuelva A Tu Lado/Lisboa Antigua/Ojos De Espana/De Toda La Vida & many more
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf47ffbf7e1dcfefbd5df0278eaf24a11e78a0c2e598332b3cc99fd768be9b9c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USZZR1010286.