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 0x32953188e16c74d8cf62bd9dc04e2ddf53b536b5028daa26b4ac439b27cc9a0e. 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/e1869f7a-85e5-422d-8f9a-179e1cd275ce.json and https://artists.proofprofile.net/proofs/artist/e1869f7a-85e5-422d-8f9a-179e1cd275ce.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 0x66f1e57f130f77431f0d1f064b209ef6fbde0b1fc55620ebfdec8a56d5cee049. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM21968368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f345c8de6cc04ff9cf0df1a0eb96751893700e8f05bc18b0237afce0fc4ba89. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM21968378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8274b508bceae4d287119eb0c031f58ca07aa1071d106c944bc586768414a58. 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/USHM21968379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a2bca8005a435af79b449e6a61047d2c108bee7f1e3ce32a84c93dd683b892. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:45Z), 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/USHM21968380.
Soy Loco por Ti (Versión Jazz) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90311c9cf99706c7fe1441dc022affe8433affe4e3e71bec32553294d1b125b. 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/USHM21968381.
Por Amor al Odio (Versión Jazz) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5215e0e8ecfd187dd465ce6cfc8038c274ef5bd1ce2caa1b88f2b1d03f9eaa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM21968382.
Entre Molinos y Campos de Olivo (Versión Jazz) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ab1581c74d7e7a42e931aee3b80f99473fea98a9d3e0a386188d01ea6d0110. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM21968383.
Donde Duele Inspira 36500 Días (Versión Jazz) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268fc20ce78910c25bf203f532f325360b21c42f125ffae4cac2dac895d1bc02. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USHM21968384.
Artesano del Arte Insano (Versión Jazz) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403a78f3346ce8f3191e9da373fe41cbec30f6fe989dc2f2985260c80c143a81. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USHM21968385.
Quarcissus: El Arte de Desamar (Obra Completa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c75044bd5347e4c3139df6177cda6e1f7f2eda0734ca2c0165a2b47e887745. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/USHM21949816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3f819568f644878b16f0e7e34baa913411a2ef5550f9fab51f69c53c4da6d7. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:35:56Z), 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/USHM21949823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162b19180a73676b0cd2b0d7c97706c5b64fccac6be00f6a66359afa5e7e3894. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM21949820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c343e82ce88b402caa27f747e7966f1ca3f8eb47b2f2d36239fe421b77c7a0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM21949821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4cafd2a57416516416e62ba15e12479a491bbcbf1a3f3943b38c429eda06cd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USL4Q1959194.
De Paso por Lo Eterno (Canción del Extranjero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d8174163423a9ede9728a05fc94b8098644cdc8b7595fe9eb05fecc26ed802. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/USL4Q1982812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370ad50802ac1bf27a77c517d0f229a1c98075bf3230949286301c4f1c8c7bd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USL4R1900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b772869c930d294ecaa43544da265376ea7c8fb28b725b7e2808a30c71fd305. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2067893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a7a1b4da8075396b1c579fd072102def6c88295e663ed03e9ccdb98e14d7ea. 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/ES6080848603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54cb0f1bf826d976a3db4d0d704678ded667445c08efd65efa0c226fd7092b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESAAI0190331.