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 0x68539fd8ab1ea46b07479989dba6360dff7fc9508875fc74253b489935b0450d. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c0c44d6-cd37-401c-b152-45abb2be7037.json and https://artists.proofprofile.net/proofs/artist/3c0c44d6-cd37-401c-b152-45abb2be7037.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nostalgia for Mexico - Music for Flute and Piano
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 0xa9de7e9b771f2c96deeaccdbeaa4c061f05db2f179ef8ce74d83b53e24d51add. 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/CH6630079706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f1065b7be55815fd30ff638b428d118b492eb12b37aa08df6095dc31ead86. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6630079712.
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
Obsesión: Obras del Romanticismo Mexicano de Ernesto Elorduy
Alma y Corazón: Obras del Romanticismo Mexicano de Ernesto Elorduy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51f194d55cb953870230887a93934059834fbd6042a66602384c7568f4bece0. 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/MX2831200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc109b3df5449635a5e86308cdf2c1bd1d85be3ea8b5c0d02dffd6105809802. 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/MX2831200954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c64d78ef6c8b1e92d0cbad8f597124e038cbb30821f90e168be412c4f8db14f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/MX2831200946.
Valses Mexicanos de Concierto (Mexican Waltzes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac76772a540ac6b3cb1337481d6a46edaf84f88e78fd602539988af7c6bd57. 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/MX2831201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21e4809014c18337b8d703340025be97abf55589a88b00012255d6b62f802fa. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/MX2831201122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f4ec4ab4248ed8d1e02c797ef9965dbbef9cb25331c6bdd37d1acae078ab51. 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/MX2831301772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8349bd96f45381452029c8abae423ff51b4ebca1481a851fb3e626536c5913. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/MX2831301776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446e301236a854cfbdb3b8561f27ebebff8d9f830e1d4f80cace0304c3bfe041. 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/MX2831301778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec4a5f603ca66965a97d845b0592822e0d7d9e3c98b47fe39a05e68b5669911. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MX2831301780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da73631e21515e89d7bd68da3010442bd7bb86deeeb13769427d8bd6cbd17b. 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/MX2831301788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81edd973fb0a9eb6a61cf3e5cd6ddd1b5e9a7e286848c7bd77844ae66c7d759a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/MX2831301784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b00b78fc2bbe59eb42e2a624cd96cbbb8537d8e8793097bf4fd5497d2f8ada2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/MX2831301785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea34fe546b7b6d32e11326be36979b31ca72788359749f3f8c79f6890c2e359. 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/MX2831301505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42a58be88c271f9b108549939cbb318ab919e8b5c6df6b221364f43d56a2968. 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/MX2831301509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82f69836999345d376331aa85e2a74bd04c9ade13949ff43551a4d515a8ad3. 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/MX2831301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd845dc37c07e64ceb296d217f07912e804dec0f3260f5f41d9b5f1b4405a9675. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MX2831301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3098e329e63af1f14c7b5a72100f42c1b2410ecdcf13ff304316de9d9600a195. 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/MX2831301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aec90736c2dcb58c29a78fd1a13ced313e15731b9bd1e44518cc8e63864e4c. 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/MX2831301515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ba05091ce9e751972192ce4d270bbb48c271a1228e52ca3fc514289fa62cf. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MX2831301516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba99cd051510f9a5de00860efe07cc90beeebb5ad1c1f7730c3241482276172e. 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/MX2831301519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0abb31f040478d64cd954532170659ea6167d91aeb5f9c129c088f5cdefc9. 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/MX2831301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383de68988302a7e25c504b44295b9cf27fa7b4a4fdec9995a10cda898c641b3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/MX2831301506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5d13debf923fdf4ccedefedceb32b503a35ac0bc512f05921b7677e49d449f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/MX2831301507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d87b9b2667c1b58f6037ac62aea8245d032f52ecc62bc2ca8df2e036caf1c0b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MX2831301508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb4cfb37ae1a9dc6be92a8d3a87c054a6f9057a1d26c33586107b9ff6806d58. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/MX2831301513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274805c3cf0afff34749f94777397d21e9071df58fb3cfa8c53d2323f3c939b0. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/MX2831301514.
Vocal Recital: Molinar, Martha - Peralta, A. / Campa, G. / Rolon, J. / Carrasco, A. / Castro, R. / Ponce, M.M.