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 0xb547c85ee4f8fcc9516002b635bf428613e481490b88cd7f781e46651debffd1. 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/40735092-800b-4f68-bf21-f7e0d91916ed.json and https://artists.proofprofile.net/proofs/artist/40735092-800b-4f68-bf21-f7e0d91916ed.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 0x0528e2220c3dc2698521c5ac2d812c24ace69866f8639fe6f6ed06cb5956aeaf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PEOM11402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb86de073fc619cadc2372747cac8316a78992a43feae9868d5d497bd5c13b16. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PEOM11807144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b66177f602dbc93f6722a9556d9f94309f801eed5fbcfd5b183da19833682. 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/PEOM11807149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5c7b69a4f33a019df10df66caa9976b9b5512e0dbe2dcd4e53c20b752e6f24. 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/PEOM11807150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1e2152c77102eed3646bc381073c9ce8fa3096642216343f8d4d05ab0379d6. 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/PEOM11807151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd2f4a9568d1102285805b74fe157a49d4721af3e1e094f07fbe62065c4cb31. 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/PEOM11807156.
Por Favor Señora / Asi Te Necesito - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710cbf48c1cfe203ce619d6c0711580b4df6a3c5d25ca69173d401c731caf523. 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/PEOM12006103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf638b98a9bb0f8460f0e847fa658f472cb69507afce7530d3ce186f38a8b4185. 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/PEOM12006109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b910c1f5f4ce64f6f9f5d20fc391f83f820e08fc6cf2c245fec193520bbfb44. 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/PEOM12008189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec6cd73efbbea79dbd18239cab309d712b5390f339004ccb2d70db0533f1f47. 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/PEOM12009166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2617461240a5086a18b730ed4a20a6f65fef9834008d450540c0c81e8a80302. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZNJX2051461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e51cd868e83c0f78dcdb27d7bd1465a46faf82610f684d80f6d133af0cd2bf3. 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/QZNJX2051464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fed1e7227a43381849d54b01f9c6ed288cfd661e27d88c698eacfe1ffc0830. 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/US7VG2151936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0899fb8156c10dbcafd11b5d98a6a5943acadad11328d0555be87bf5ab6efa98. 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/US7VG2151937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae719c5e2a90ef2ac52b7222719faf5847fed0fdec763334e3c3eddaf465b9. 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/US7VG2151938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9b1fd4652b8633a22fe6256066bcfbdb2838157bf25c0c067e3dead06cda61. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US7VG2151939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbff525023f8756c577e2f120d8b7f1dcfa59b1d0e8b7b1627ba6156182ebae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHZ52118846.
A Vacilar Con la Orquesta Mangú (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfca3dc2af786cb94fb05c23c643da533835739d27c548ff7cdb4fd7f4610aa. 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/QZMZ92173676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ade9a46c5c74b9b19317b73b9fbbf84e21e9b7779f7d39d93c601356847513. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMZ92173681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffa50f2775afce7df5d3dc8edf04b1100d337b849d59054b321e03251aef08e. 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/QZMZ92173683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4dd338efd0343c289d090fb00d734c0c0aeef569bf88220f76b0c06661621d. 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/QZNJY2110756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc811010cf1a28220c43671d294a955a5bf630e32ebbde1b208caad8b27300824. 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/QZNW72329597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743af02699888a6526bcba90f67a9153d2c5b45c3da9093a696de2bb3d68945a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/US7VG2349588.