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 0xb7ab4b413a35ccf3b59dd3ccb009860a5c8b657a7c0f64d29c30771543a9d82a. 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/21d42ab1-e819-437f-b9e6-f6a93b697622.json and https://artists.proofprofile.net/proofs/artist/21d42ab1-e819-437f-b9e6-f6a93b697622.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 0x59c092abc3bcea92b548e3ff82b40ab6f05d36db00d1e034057c0005dfbb179f. 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/MXD481810954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab287f64ebbb015d4c94c763ffc8ee0d3a73c14238135b9ab7afcbf2db316c3. 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/MXD481810956.
Popurrí De Españolerías: Valencia / Españolerías / Murcia / Granada
Popurrí De Felipe Arriaga: El Fuereño / Fina Estampa / Campanadas Del Reloj / Corazón, Corazoncito / Juan Colorado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a625dce39a9417ab12c7141db651dee890dd50f305d70542f122e4407619e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:34Z), 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/MXD481702926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4c67418d2d59d5407749a853254a44c3321023da03d9e6955f90afb6653049. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXD481702813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7abfeb0b71c15fb1ba9667dadcdab52e2b364a1f89430f17d5121eb9b7f3507. 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/MXD481702814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940a621ef5b11ee42ff3eca5e293125c1ac104f9f409b303e93b0d5d9e4dac93. 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/MXD481702820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49f4d8d84cda0a0f0564d4a1b578c3debee087dcde195b448777e00af33bf8f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:13Z), 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/MXD481702823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96421e3f7a8639b4b907c366adcb1f37c13b05bcdc5b63f039712c578b14b2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXD481702825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f222cbb0ef34afe4648a02ee6df430408b5135a2d60c69e15177254c7cf458. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXD481702922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9e6737641a4007e39bbd9513d781d2821cb42c7892f910d5bd1b809087dcde. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:23Z), 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/MXD481702829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb53180649002add4bbd31ac4bdf06b4f021001453390c8628a507f6bb41f130. 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/MXD481702980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de6649a4338127ae3c548af275ccf824888d555d3a6ad5e3eb449a9a7448d2f. 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/MXD481702873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff265f6e7c8973764dc5c89dcccb41955a026ee736b859316f2341bdc513e7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/MXD481702884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bbe24b2739bcb67ea3b51182b087ff06ed3d474400cf25c9e44559bd0b4947. 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/MXD481702885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e1fea616daa0ff46b5b64df9f902f2e69e6e789dfea53332dbee783e4ea2c. 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/MXD481702891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e763cfea26733f1e92fe3a0ec6dcfbb16fc73badac3f2a97677b5d9b28761b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXD481702894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24ab0079c62dc2f178b1c7f5d1e4f54156787b455377f777d96d01fbc82b8de. 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/MXD481702896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b27b881b839199b5d4dc5988dc24c5f9c7d41c8f401ab8189e8758d9bb3971f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:18Z), 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/MXD481702951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dec97ad804c450318c00e38a252e35c35c38d743b34ef8a90d0c6a6fb0ab7c. 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/MXD481702954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d138760761a613d29fccdf3d6663a59ef2c1550d54cb99dbde9b646a404b95c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/MXD481702957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ef494fce3a0e1c020f7b103dc6234021933b52a90d1b2b96d483c78ad31d1e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:38Z), 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/MXD481702979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775d3892651da8e8dcea2ff6e886b825476c716406c1831fc6daf6c305e611d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNW72218303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09fbaaf184c66624fb6b74c117e0ccc9b7a9887d1bc8327e37819965acdb37d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:27Z), 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/MXD481702939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeecd0c00065ae20790c384be78d67401d5bfddcc30d7c46c0e29d8b25b0c352. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/MXD481702945.
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