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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b92e39eb881f8cc0ff92a67bfce9cc71d23d972a30a83e71fa569c3b9332798. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f93aa8f-8c4b-4cbc-9513-24e0f2d25ac9.json and https://artists.proofprofile.net/proofs/artist/2f93aa8f-8c4b-4cbc-9513-24e0f2d25ac9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nuevo mundo: 17th-Century Music in Latin America
Hanacpachap: Latin-American Music at the Time of the Conquistadores
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb53616c2b571bf02aed2c031d9f86f8d685e990d00ced2c94b75aecdee8f87. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH1491123001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d270463e9fe1f5c61a0619fd8cde86ec2da545877f1ba90a50b00c6380b9451. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH1491123002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1b9b55cb06a708ed07eab90a07174da08987eb4523a2d1e65130726e110e72. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH1491123010.
Salga el Torillo: Les chemins du Baroque
Devoción, fiesta y chanza, villancicos en la Nueva España
Juan de Araujo: Fire Burning in Snow – Baroque Music from Latin America 1
Moon, Sun & All Things: Baroque Music from Latin America 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4920ce93278f5f4e02b5ce678fd5f5422de989851dc84cd4d5a3064ceecca34b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0552403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17449709329d722741d6775e0eb46636bf4741a6c3010ee3dbb13f896e6fc19. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY0552405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9b2bada774c89e33ed2bb3b1e504653613d29236a98048265ea3a3ba0de8c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0552406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aa7e1ff4ed2f35247f98ff573526441459e5241d12655b5065a56ac41516f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJY0552407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda20d0c793d137caf6a4a67c545638d0c7cd94d9e980f9e9cc78861030505144. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY0552408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81015d2d34e1d0a5f2f766916e9b98ae3536da2c4cdc4afebdb210aaa3a4c16. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY0552409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e45a2acae8e6109527ad7789054e52a3b46dd4ea4d8a8b78bc054bd64752e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0552410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba1047bfa43470451eff0be73552d2b413a11b8d1d80de253f614b878f71eab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY0552411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbb0cb6e5035873f5d43ec39491fd7486c21a6258802e5bddd81c8c953c81fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY0552412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1043c65272b4729623e907f44d738c1b51d47e00dbee38589ac46028fcfcfaa6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAJY0552413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adcaf34348f19f7636267b667c69637602007dbc75c3427f05fe7fe222dcdd0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0552414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca28f10c40e4473dd7e7c5008c2f690a83f5cfef035728838d0b32dbf6847ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJY0552415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ad5c8fdbd1f740b36605d454a2b4fcd08b1743d1a720fec598e7b62dfbf7e5. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBAJY0552404.
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 0x29a7b061dfbbb829a8fa30ab8b58cfc5b8aab738c6c812aed9916be2e8146caf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BER181233405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165d8b867c257a4bad97b06c439e5bfdc04ac1836e76a7b427a43a86401df278. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BER181233406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd672541d876195d779000640f5260e30a13f8c9da5c3c10cdb0148066b01ffef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FREDR2500025.
Y Mientras pues soy Dios (Al Sacramento a quatro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffebc050fa7c668dff3389076766d225c58b3260dbc2341e4bcd67a1c18ee0b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FREDR2500027.
Corderito de amor (Villancico a 4 al Santisimo Sacramento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972817d9d12ec8757bff74b561c1c6531ee090fa1f5e78b8b8c22328520131c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FREDR2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce2c7a3e6c30b5e8770c69e8fd6bf81afb36db67465a50d8b9f32f099a64939. 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/FREDR2500026.
Villancicos de la Colección Sánchez Garza