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 0x20e838bad4705c4b8757915a139ebee92e9032bbd37227e9c6e5063764f1fcd8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb452a2d-0132-4316-aa0b-207964563cae.json and https://artists.proofprofile.net/proofs/artist/fb452a2d-0132-4316-aa0b-207964563cae.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55238620b541ed777d6a26b3f8df305416d9922e05102f5bdfa83cad59ff1cfb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES17D1700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076381586dda40d7672958254c2f4734bc283747a4db3df27250ba326aac4599. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:11Z), 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/ES17D1700225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf639ad327766108ee7b6d1a4cf8ff1b3300f4328a067171800f5a4f56caf56f6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES17D1700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abb5b896992a1c05cfd472e5f1640ec4e7d7cb1efc8472d18fbd4bbcbc7e55b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES17D1700241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6aaac35f81acd3e796da7dd6412c80b40671020bbdf936679b578da22fa608. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:58:52Z), 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/ES17D1700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892ea99ae769009c81b39a1080844cddb9d2f318abf74f9ceeec25d8763b64f6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES17D1700245.
Ara Ve Nadal: 25 Desembre / El Noi de la Mare (Pot-Purri de Cançons Nadalenques)
Ara Ve Nadal: 25 Desembre / El Noi de la Mare - Pot-Purri de Cançons Nadalenques
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62754f4c275d70042568e04106992b7f38a741f09b352a496c7159d2d76c2e1c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES17D1700456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052f0c5953cf9b78543668867cd92d6af2ab430c2a58341455b814fd3aa53e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES17D1800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34bb2fee57a7302014eda26e79e907902a5ea24107e03d755116a98ca965ff. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES17D1800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267126d71113420ff6b8d6eeee0e46857b88a5f7d5f941744445238bdab7cccd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES17D1800505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ff3932fe608926d127fd305a33a5ee86632eb5e2fc521ed0653c292a65fd48. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES17D1900768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27da365e7ef261660ce308e88ca9d713b2d526e5d1ab962bc3ee0c35666cc20c. 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/ES17D1900769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d3310fff90f46ebdce5abce38d33d9c91e212c9fb2d65467b389b3d2e4bcd. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ES17D1900770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d6bd6258253c969e1e6b611d6f22bb152c1b8e0c8031f182e125c8cb49cb7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ES17D1900774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaa12ea2dd0316450cd18f2aedfa942581e6002ffce497c3095c5ff89280e1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:22Z), 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/ES17D1900775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1732b45c4f52c916e549e3f2242182d6b68ff32d8583a9d30cb6c557c3359b3e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:05:58Z), 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/ES17D1900776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb17bb38f8fc53ab55bbeff7ed1a8807cd6f8f4ed49751b42201ddab5ba9ab. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES17D1900777.
Les Aventures del Lleó Vergonyós (Cançons i Espectacle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e0956ed99524a993310cb3648b579fb9ac2cfe2fa32060cb21501c171a55fb. 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/ES17D2101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b806bade48950fae3d2dde88f93cd051b8700c6179669ea50053d74fcc7d978. 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/ES17D2101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d9d64f799ddd27b557e2c9a5cabc7107b79da434d871f3d27a1b612e16a558. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ES17D2101508.
Las Aventuras del León Vergonzoso (Canciones y Espectáculo)
Les Dotze Van Tocant (Pot-purri de cançons nadalenques)
Les Dotze Van Tocant - Pot-purri de cançons nadalenques
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5705ba4414452ac5d2f4902b9e84c52b31af6fd2aa05080ee7d9c30f69dc634c. 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/ES17D2201947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3883bf3e6cf84779287c5f9345b627fa44df7fa9fd306d1974f3ebfdc7b2a064. 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/QMFME2015762.
Cap Nen Sense Joguina (La Nit de Reis Farem Realitat Milers de Somnis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a68bf011fdd9a01f443c0c6b3fb843eb5264a2d971c8100c3be79dc211210c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES17D1800597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e15cacce160082fafdb8ee06ad7c4da31ee58a457342cff5e17d73d9c3cfb. 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/ES17D2001186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab6cc0b99bc271c90e04ed76c4bfa2da849895f983ab419f8434d991f8c3163. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES56S1900440.