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 0x8e7fcdff42b290b5da9a9b3146bd53394aa547522b5d5f2ffa527657de2172c4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac6f57e-ac8d-43f2-a6c1-1b5723291ad5.json and https://artists.proofprofile.net/proofs/artist/8ac6f57e-ac8d-43f2-a6c1-1b5723291ad5.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 0x1e44b804938c0a7624b930065839f4b01e7245675990191337a62ada5f7a518b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QM4TW2489449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01092d91917ebbb59eef73295940a5ecd75a46409885282b91eaf9f153d9264c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:54Z), 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/USCGJ2313657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6c031b657bcd967ed78f232dbc1c530d53046b31cd800dc4dcd96ed9926778. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGJ2313655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b211c23fbee53b39dd3cdb2b81a5ab075f8ede98b20c5747d8f25d04aae0d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGJ2313661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725e0f24738c11cfd078abea43851bf456ff783507257d1e91b10222106007a5. 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/USCGJ2313663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2d390b699c7cbb99f5df0e5648e03ca495c14bb6f21c62164176b5770e4d3. 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/USCGJ2313658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330603c705bfec4bd71ed1927e65b0022751d737eff0749cabe87e662b07db44. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USCGJ2313664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbe36a2477e38318050618cf79b3cb481bb0a52289039678bcefcfdf1ee9e3e. 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/QM4TW2444505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10acc0c2d2ea32b83fd6d2f796cc31cdeed748f827b83bbbd110c774b020e659. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:33Z), 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/QM4TW2444507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdada67adca6489311d1d7203f5292cdaf18bd9bc53471417e113dab7627c09. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:27Z), 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/QM4TW2444508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bc3da721b487c4ff6bcc1cd4cbe4b70fd50c084d9be88976d4e8cd6f8b4def. 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/TCAFL2108284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b329faafa8f24180c02a40688d83a826cdd29d1e32f04883ee18afefd1e9a. 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/QM4TW2444511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e82b2a517039ede8608f64139cef6035e1ebefd623025a801318e46d71dd7. 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/QM4TW2444513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5391a4099d1640f695275ab575830916fd01dd2cc5143eff743578c3532de15. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CALVP2056367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca516b33c1773e94725ff3bb7fe674e9b9208472876c62b461924acbd7899cc. 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/CALVP2056373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cc1539b8203d08c8e2c860248df3c65e7692f269684d3eedc1b2c23fd88e06. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/CALVP2056376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01f4bd1ced900f5d3a2acc96907437e55dab1ddbfa59a4e0dd5b6d8468bbb34. 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/TCAFL2108206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7514f8ffcdb4afdba251a2e58e47b826a45140dbf4cb7d7778f292cd1fab00. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFL2108222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06fc78ceb50f34e3528c4dc9c061a79ee91c7b480c496a036fd0ab68c2b91f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFL2108228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc28715843f8327eb05b6eb51057d6965957829363542f5205670050925592. 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/TCAFL2108230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd7178fc9437bfde440bfe5613e380af84eea30f34c23445127a5fba9f5121b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCAFL2108246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77160f9c4d6d8460e3fc74fac69a0c84ea710dc64a51b673b2d5f37ee1869eae. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAFL2108249.
Tu Mascara / Sufro Recordandote / Cholita / Volvamos a Empezar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662d19b2a46bea98c76b01dc606cc0fcb08de6ef42c0926690b9555ac386508. 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/TCAFL2108319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f53607984fb30b642dc86f62e368bbde7a29b70143ee470c479e6d81aa8c06. 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/QZTVM2104127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc903326413ea39e6a188f34e0bab6b843cea9e413d53b0686cf1df629668df7e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:47:32Z), 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/QZTVM2104121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffcfba5cb2b6ad0ba4df96c0b215877cff387729fffdde646dca823d7959328. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:02Z), 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/QZTVM2104126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69438d48ace9104c7de6e977006e6f06f040adbda4126a812b84de12f8da43e2. 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/QZTVM2104128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c80eb27844c2d8089d1dc571641bbd92d37d3367e7849a343f07405fa895789. 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/QZTVM2104129.