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 0xe350ddb9b6fae989c809ef9454778d74f15aea42c4ec20706834badfedb413bf. 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/fdfdaaa7-1fa7-4d31-8399-6318f2fe01a3.json and https://artists.proofprofile.net/proofs/artist/fdfdaaa7-1fa7-4d31-8399-6318f2fe01a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Gran Coleccion Del 60 Aniversario CBS - Carmen Rivero Y Su Conjunto / Linda Vera
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 0x15cb9d16af74c97e874ead10dc78031837f52a279e49a852e07adbe881b32fff. 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/MXF146500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab338234e66d11c525bb8e4b5e35c8a14f6b7f5619f0e78f54f4b7b308451d8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF146400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1626f71615a8baa3c9e3781bcfdebe278dc1f295afed68b2000ff48c7adc38. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:26Z), 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/MXF146400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f0aa709adde15712a6b8a1b6f538f9f54f20e54e9115bbf4e46ee1edc641d2. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/MXF146400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cff3079ca537ac063249c3d1ff03916e54f39ed82b0ca403f7587977f8c95a6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MXF146400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab04554893044697a249b890ca926659eae00164e605a600e7d964f260e5389. 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/MXF146400145.
Tesoros De Coleccion - Carmen Rivero Y Su Conjunto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfcc66fb8c093e1272d4307b59d6a8dd29ea405b8a185b1b15b9d609fb36ea8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USJE61701342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fcf03ffd98189a00916192a5edcfa0a345e50850472b5529cca21e4dd31c43. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:14Z), 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/USJE61701344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba97b556b0efa5ffdb3d1e2e9592a91713852baecfea1788f94c3867de1b5ed. 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/USJE61701345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9831474cc000e4bd3a9a7aa0ed2543e57b1689b437f8f36bbc403738dd2a87bc. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USJE61701346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d1504d7ebbb9b20ed08e29c378101e709ee828d2416b44c8ffbaad51bad04. 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/USJE61701347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf16637bfa99c4edc40a9a6165e07412b04b4f0f578850265ee65677b52a2d15. 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/USJE61701348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27a2637c96dd4faf395df53bedf3d6b032d9b082d27fea1c64ab9ca2ced4a6a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USJE61701350.
Dos Gotas de Agua: Carmen Rivero Y Su Conjunto y Conjunto Los Cariñosos, Vol. I
Dos Gotas de Agua: Carmen Rivero Y Su Conjunto y Conjunto Los Cariñosos, Vol. II
Las 100 Grandes Que Debes Bailar Antes del Fin del Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac6d9a84686dee200e4386e4f4357efaae3cba9ef5e44fb93ff27ba6f65a2f7. 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/MXF146400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b4c3bf1a60f707a6e398ab51dc332d4aa2c2b5faec49d3ccdab427013bd0c6. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/MXF146400180.
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