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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c6d2737e040efc7788cf5f08681a0d5412b4c422418ce0fe4d60faa9c8bb46. 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/4b392ca4-e316-4e88-ac00-bbe35e0feaea.json and https://artists.proofprofile.net/proofs/artist/4b392ca4-e316-4e88-ac00-bbe35e0feaea.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aff566e23c1643fd43686e9f3e9a3027bdbd25d526527eef2b182d54df81ad. 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/ARA590701050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d815ba39610a2db06db9d932519cab4be273ecb0243f3b4c776ace3c2ef6286. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ARA590701052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6799f14b9777180e72e808959e95fe7f61511427e28f64bba4e8ee07ee02b3. 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/ARA590701054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb799ae6af4194b2de0ec35ad56f1151cc035160ee851f4f383cc58c1061bf8b3. 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/ARA590700798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687cfbb6dd3fc3ef525420ae03e73bace7e50441e4e82be2ae7ce5a3dd0470b9. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ARA590700800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c1b6c173c65ea7feb0a102513d9513ee7f050df44b72483d4edde278ee31d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ARA590700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5a45c6e7dd2a11587d66b2553dc40d28af8fe4a91b11183663208539697560. 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/ARA590700803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bf0ae0dfd9e2284aa0d13b073ea67356d4559756328784794d8a9bae2fcc9c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ARA590700811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d5a41b90a628f3237046731cef9673a38b00ed17ae9e2ea9d5e63f3860a47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARA590801746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4f919bdcdd9f7b298681a0a09d3a2637401e0a880fac1d536efce8272d0fb6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARA590801747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25be93345235ab5a070e6ac048530abbe57cdd6f0072aedba5c115132697c88a. 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/ARA590801749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67686fe840729cb5a8376f76bc85e1d5382ce854506600ef7dda490cc897f2c2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARA590801750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d5d89a6a39e8a7fd7bdaf4d6d61b687fd38c17a326bb44c20cc17d27face54. 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/ARA590801761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34697aa82aec08997bb2b6dbbb1952405ae52eba461199ea63e556b53a89acb1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ARA591002163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94871004e9a34f686bf4a96554760d3919db5b9b29dccce90b1912e4cec280b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ARA591002167.
Enganchados: Esclavo De Tus Besos / Sabes Que Te Quiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5702a5598269d4a4ffcc2c3e402092e1cb90bf202eee551a74a498ed11ccff00. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARA591002173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0fa33fa4fc6d91b2c4b7d4853d6096fe2ed88cd68d18b94f026ef3ec36f9d8. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ARA591103056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f74421fdc72650a28ea3e7708779a3784b87bddc04e1a953c06404ed2e833ae. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ARA591103057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327974bb05726251da1ace6e23bdc957aa8bed5c18bc7aa0293875d4966f4ed4. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/ARA591103058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49336d4754fc0508245df568159e4c6292fcc3c3b6cfef33b4bc825891a87af1. 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/ARA591103060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb9d2dfba99d3ce2201cd384f87d9e1fbcd860404f219f45904293ba5d2179. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ARA591103063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8cf54dc4a395eb0bb18d23317340c9e4aafa965c15b037afcb334b2649bd02. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARA591405129.
Ché Ko Siempre Rohayhu (Yo Siempre Te Voy a Querer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e3860b45fa29587c86b89a55eb914092da28b50b0b5bafa1393dcf9289c765. 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/ARA591405133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2194b00251d1c8941bb8e338133e7ac990a1ea0afa987b7399b0c00fda3c99. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ARA591405137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442effa5a34f06ed7ff42ff6cd0c71892668b66ef7dfcf1ac7ce96a83b65cec. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ESA011914311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e91eb90c63b712c7936c9cd1088002ba5ccceb126d6730a8fa74d5f9c9a3fb. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ARWID2020950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f619897cb920ec7706506e63c0d709ad7f580714a9f932b7ac5f6b37491e7f1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARWID2020951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff72fd19ddd602342c81ab34991d5bd9617659c216c969e77aba2e8bb7cdb1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARWID2020952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd13413c0b9dc30d26c2f2931a692989bc13860a3f4e337f196e483533ebc2c0. 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/ARWID2020953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822cff731ef125d8e9e95e0fd4da3ed3879d4a67579b7b0bbdf7703a975e5775. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARWID2020955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db2bee26b35c1009eb5d6b79102b2b0eaca1301e92d9fb9dc35cc60f991ee40. 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/ARWID2020956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daaaacaed13611118042e3d273c7246a39c66a9b0e80d8e8673ee728e2c19f3. 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/ARWID2020957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae83a3278bafdf8de61e0601acbe9bb55048458601d87ad9fab9a69c6c7d8c8. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/ARWID2020958.