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 0x2a83abcae8b179ffc9b839af37a7a174eb7b997884596bbdd543b6a2f8a4a984. 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/de81291e-5a77-4668-bc6d-9b52d422d49d.json and https://artists.proofprofile.net/proofs/artist/de81291e-5a77-4668-bc6d-9b52d422d49d.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 0xdd4f6ab9b430fa13baa2fb7a853b79f78505e596660a6696e7d4fbe6192a748c. 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/ARG991027931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f80837c57518a956996bc472a112da9ab10c29ff0fc45b928945852f1250c9. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ARG991027932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebce74c3f7d81947d054983b714a4d09ac9fe44d686a0ad38fef5121f94f0c5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ARG991027933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe668ed29a43a11e4ca15003b7d7238121a650d9fcce15f8bf75a2311f47e1bdc. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARG991027937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ecbe58f703a1d01f77af3419c159901e6474e90a7d9aa3f2d0c8b4b330bd27. 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/ARG991027938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea33650814cd5e162001f74cbc8f8b5b712bbbe4f4cd77d31305bf40fe73d72. 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/ARG991027939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632e0f2519b713a0a726977b306552298a0b0c865ff7c351078cb5a02611253. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62014608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13d2192942c446f325ccc1a912f8c6b3f86b6957b22904fcee6c71a0ccd581. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZES62014609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dbd39a27d42078fcd484672743cc4973ca88f1ac7ca8e49fe611f05bb0beb2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62014610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea84ad7addf9bd2bb96d37a21721f1e12db539d32776971f6bbf77247feea068. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62014611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e74aca6619dce6232cbaec8ebad1c993ed646be660c03806fc691bf9166c6d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62014613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f0a4fe688c2a78f8de92f960546d115f007060374d7975c708cbc0f9248948. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62014615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e058de2dec90ecbc4383be919c83e50d382ccfd9ef5a08029cc340b80b9b6. 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/QZES62014612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b7ef8704c17653a7b18684ff781abb61b4e99ae9a182e48def8ab194ea7a4. 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/QZES62014616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac511a036a63328dfd3dcc52dcf9aa096069894935c46a5b1cbb802dde01b0d8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZES62014617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927270b54234d6fc21c257366c841ee7345b09760d63773b30758a98ec88b0f7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZDA82090803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb153eb5de90199bcf25d115947636946317d5f83ac1372e61476a5119cd3f1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHN32037833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b567b122e78d0ecb426c1ae9ac417dd430d3872a4435dd98e075faa1080990. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN32037835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4603fad47cb0363f88eac2552c2e30812d27a20739cde8ce10647cc1e7da96. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZHN32037837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f50fe3ae5a7e7b29196318ba8fa80d848b7997cd5f452e50ac09fc26ab768ba. 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/QZHN32037839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59419fb53adc27a3a14b3bf566bd14354c99598a1cd1bc04724f58a72e7af00b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN32037846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20382fa1199d5983920b58a17906f2c974d3120fb661c3278cf687cb6211aab0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMDA72185915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5639ece40fbf048fd8f4eb63a2b7c80d78551e6014f2be4f378dc6f2b5e956f2. 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/QMDA72185916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729a165110820be04dc78321ce305e35a9a9fbd69882440f56963a68b23df33f. 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/QMFME2253938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2647dc29c82c94a634f091f36b888fbd8e3e6654fa6ba158e0f1b0d2b4d24a. 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/QZHN42031674.
Mix San Simón: Basta Corazón / No La Olvidare
Hasta El Amanecer / Siento Yo En El Alma (Version Banda)
No Te Creas Tan Importante (Versión Caporal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36bd204817f46b0c2cc8e27c502e964e38960d810f243f53a8158faabb6bbbc. 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/QMFME2593055.