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 0xeb683fab5b113e63a8a8c4cb185fed80009cbbb9aae8b265a5f1c4df2f07b82a. 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/8adf5753-7dbb-4509-88e5-d96d6b6d9bd0.json and https://artists.proofprofile.net/proofs/artist/8adf5753-7dbb-4509-88e5-d96d6b6d9bd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tributo a la Otra Kanción Popular Mexikana (Rolópera en Seis Movimientos)
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 0xdd62b9af7b2823d3ce6c14bc0ba2c8e5c3d36c2c3c4d499f2dc9cb4cb18e0474. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXF019600462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31443c9614217caf9e0dabbd2e64581de39f1b49ad2ae45aabe90f4fb8de5097. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MXF019600470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ed2ba537c0d5d90bfe224d0f7f805d34ffdfde69013e35a4e28818afbd48b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:45Z), 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/MXF019600468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f7646b228247feef2d4e1933e6223d28620a6134d94e0104d467e1dcbf1368. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXF019600469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92456a548e6b49d2c5c4449d9606e94e1e870f098145a817415483eb3dffa906. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:27:48Z), 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/MXF019600472.
Guadalupe Reyes - Suite Para Dormir la Mona -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357c878674218f4420fb171ec6c92cd0456c7529a22e1e5be956a622ebb23a7. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/MXF602000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0cc0488203d788dc80ed810c2b87e19f56fff002561383bc6d3d0e459c88bc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF602000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ce056481a1da131b365e528cf48d0e84fcbc460aaf61614f1d8667d2d35629. 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/MXF602000119.
Un Beso Tuyo (El Agua Siempre Sabe Su Camino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3935916d08a4083ebb0c0a4d82a9e3f5858ffc764696e584f183c8c42ea625. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXF602500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7f5e723b984055523ae320a84019a5db91aaff3f105fcefe2d9a6622d72f89. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:51Z), 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/MXF602500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d97c698e2878c1dde2cf64b3735485d11b5acc4e3a1536654449eebfb39a1e. 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/MXF602500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8122b028d5be782092f7203a91c9f8f92810190f0c28b93482f5455771573. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:25Z), 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/MXF602500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f9be6ce27b3d8ba507fea8025b7132342fac93c1dcd62e7a088e05ec2bd2c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/MXF602500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2e02154068e59ec29a420e4d2dee007378fa92e43aa3b9a4f8cea8d37190e7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MXF602500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5234250a42fb69b0809c0f7bf0b03ee2a38613bcc0990e44d43bcb21210bcbf3. 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/MXF602500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5016277a8696c01b2c508ccef756b47fec12bbd3adae19bc717b69c58f7923b. 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/MXF602500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df276605baa5fc9e348095175c08f592c0a9f4eb73e16230247bb3584c3e883. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/MXF602500165.