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 0xb836b8307e6cdfae9539a0e8fc3b96c0a72c9d783b88929dea0ee240da6075b3. 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/4c609725-56ca-45a1-aa86-3600da8bcbf6.json and https://artists.proofprofile.net/proofs/artist/4c609725-56ca-45a1-aa86-3600da8bcbf6.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 0x6cb54c4f6b73143479e17238743258bfa323c375f148ca10e3d9886f556a5fae. 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/ES5150900436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8d7992520977bcf72ef996390086ec8aedb8a73c97fc9a46216cc07eea482. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:55Z), 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/ES5150900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7daae4fe6281ec6fb1382a561f185769b0953dc137c292aa3bfe4ff39e6b2a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES5150900439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be6817c807f990a90f8ae5446b4dc4c4b18c59c1ba08b8b98d17b5bb02da562. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES5150900438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3088b3fcbdceb457399ef5908f9a33e34f841e6458122c6ef1112c6c88d6ed50. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5151200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2987f20ac3ec9649f91691688f528c87fdd0c900a0de8a12d0c3400cff27a546. 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/ES5151502498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046a110ef8fec6e86b0fa45158a11156e3a44b3b4373baf0ad6b0a950d0a40b2. 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/ES5151802578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c824db49b5de0b43f3e46354a59af1f2ae65777d477cfac36e307f83afca3f7. 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/ES5151802580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7c0451ab1dc133f41ae2a225da3bcfcf9eb2a91fbd4fbbf8030dbd9ce4fb75. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES32E2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef74357c22f2df3522ae2baebb037173886d93d8d5cdca700da8959e6fe2725. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:45:18Z), 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/ES32E2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa7e757d31d1e6477ed3d8607a88b0eb2c1a4d623f5afc23dec57cbfd67f929. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:23Z), 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/BK4DA2550177.
Te esperaré toda la vida (feat. Georgina) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3077b55193b33b1e2e819b80e4bacef80a9186e7b29d80a434ce526e3c012138. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5152000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3077b55193b33b1e2e819b80e4bacef80a9186e7b29d80a434ce526e3c012138. 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/ES5152000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c42b7e0a801e2b3b0bf1a355e48f0767e7324cc6bc4304444f3f0f849f8a77. 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/ES5152000920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c42b7e0a801e2b3b0bf1a355e48f0767e7324cc6bc4304444f3f0f849f8a77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5152000920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fc2870dc6654a689c9d34082b4a567fca447be7a6de53c77e8f98b5ca04172. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES5151802551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7daae4fe6281ec6fb1382a561f185769b0953dc137c292aa3bfe4ff39e6b2a. 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/ES5150900439.