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 0x3c82ff29aaae7183e2881dc9761991c0bfb53ba4bb87804859107a3c4e19d33e. 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/d02e9728-94ba-4d7d-a28b-a5e08be61003.json and https://artists.proofprofile.net/proofs/artist/d02e9728-94ba-4d7d-a28b-a5e08be61003.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 0x923d12c6c057cbc95d9f5ce94b3c50e08ce26c17afceb103381492c09ca189cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX871538495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041fdf24ae17f87b4839ee5400866c2813b8e697ae3cfa133a60dc8dc2bae65. 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/ESA012297293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb60548d18c02b6d1624a89449b62055c2eb0503aa0a5c2a90fda4c2fe88173. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/ESA012297295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc539aac7f06be7b042fe7bc3298101f1bfa9abbbd743e66006355e6c3b5dfc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:53Z), 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/QZNW72353206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac72412fe7cfdcab4c96ebac832a0ff5ef9620be0f0844863b1f3de221cb6e8. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USDY50602745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d880236fa607f2041d3adcc06009a06c5a9eb06a884e6a235e99698d7113dc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDY50804066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30dfbe60fed5dbd6580f2b7429fd943dfe40af89fe34c8e199823c7bb03f830. 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/FRX871538721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac4b2912acd945c3f9c09fc370ad15e607007bd01aa1cd82daccce34038a48. 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/FRX871538722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7567ef4331babf6f8adc5fda28f75a1ccc209fe3574772c9f31203f14b11302a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:13Z), 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/FRX871538723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078777f8e52b3fbaf11bbfda8640c09286e510f134b5ce338c73afa8f7dcc0d0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:07Z), 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/FRX871538724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bacdb1057d7c4f1cad3e6c9ef3c87ee2c132636ebbd575646e71577d71d677. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRX871538725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc0525f99cf74f24f3b64672c8affec9e2f9b6c2419359705e9550d2d8dc534. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FRX871538726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2af6fefa3cf758dfcab4b9acb1703605bdcf0edec12b3a56f89414ee159037. 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/FRX871538729.
Popurrí de Valses: Envenenada / Celaje / Crueldad / Mis Celos / La Pasionaria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad94ce80afd8541b7f6444c58c07c8ee0f21a1c0ac15bd6251533708cf4527e3. 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/FRX871538730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459b172aee733f94733059271524e0f431e88799fcca0c534f5e707e8ee5beb1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX871538731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943b56f0296d95205722138da4859f2c5154774d66d87694b35939be82dabf0a. 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/FRX871538733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5424276320be19c4aebae68bb4f41c10de616d889b5887a2fc19d832669b164. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES71G2050853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a697030a16d442c704cb3828f0a1039ff7aa2cf0f1ee33f470234cc9aacb2e2. 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/ES71G2050857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd677f273c4bdf8fb9dc3caab5a77f2aeb2572c2624b1713b291899fcde99fb9. 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/QM7281892621.
ZAPEROKO La Resistencia Salsera del Callao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb8a582007baa165827b964060800beeb40fbf6b51de8670d7c4f471c4bd0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMZ92191903.
Mix Lucia de la Cruz (Porque un Hombre No Llora/Asi Fue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d0d7b265876bbad4154db672d1aa63b1bc303b78d6dacfeb0dcf6b9ca385c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USLZJ2199407.