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 0x5aa7782475fee13130a6320f06a1a1105e42064a52d80a697c31c2436869d0d1. 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/4828bd3e-37b2-426f-80b4-de1e4f9d66f3.json and https://artists.proofprofile.net/proofs/artist/4828bd3e-37b2-426f-80b4-de1e4f9d66f3.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 0x5b13212d4242b38f0adf6213eb63c029039d39f4da850f9b3bd74e4ae093223d. 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/UYS059400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ecc88f8eed76fb631342c6978a9badbd1e772a77cead3c476d4cf6e1a07387. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UYS059800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea67f69edeed79d3f641294fce265becd02d666ed886bdddcc23c485b28fb30. 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/UYS059600116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd0f452387b7711c11c1cf50f1c4cf0a3b084679a60049d0b8eb1a80aa47c97. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:00Z), 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/UYS051701133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a71b95a3b91379a2e95ff07f3a62db8c53c7c2796663a7aabd9543d4f74326d. 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/UYS059600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f487c3d27d1c701a731abe8f947c4c8d057f51e3581feaae6d6a07b7046c3. 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/UYS059600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4365ab90f982bfcd08dc5b4fa60dd54d6d2cac6c9e1c355397385c6d1a625669. 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/UYS059500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15d88145244abbb74656e120507259ebeff00ec791437720e0e01de277d5d77. 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/UYS059500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380271ecde9f8394caccc5677960b8677660ea08a1ad24c58c6408dca5147ac9. 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/UYS059500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc50a42c834f92d0f897cb740191c2f2da8aebf6e5e635cb18e5dd2761ba4c. 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/UYS059500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790fe2742da4c16380737e71b4262d9af92d42cb831d6066450fb65455646029. 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/UYS059600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcc958202c086ab062dc7faa0eeb7b5b9a29f84782aa8d3a6f4bf433c004135. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/UYS059100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d05eb7e1e29a9ee0c0bea247c353edae507703a22181f0e51573613fdc9d58. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UYS059300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c3ef641f3e2f3e7fb824c3f7fcfe69f745e6f4d286b335e4573faa34231b8. 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/UYS059600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380271ecde9f8394caccc5677960b8677660ea08a1ad24c58c6408dca5147ac9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UYS059500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7363bfc65688fbb7c804b89d53f959826c48e6767e31495d891d6ba74595f234. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:43:26Z), 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/UYS059700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d817d4956eaa6293601d733c6696a58e067b76fab308b6d814f9ce9593207e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM122003042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbd8d3b99059c4d56fadd33d1c3324262368247dd00c0446cdc85fcf308ebc1. 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/UYM122003043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44350670e93aa09d96b38d564fbccb44e71e14907db2c16d2304e8d047fddd53. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:21Z), 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/UYM122003058.
Uruguay y Su Música (Folklore - Tango - Murga - Candombe) Vol.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a3c46e8dd4c8aebc4609a103a7d692f11af2f279a883af7600a94884fe086. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/UYS059300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5313c0c5059e42de3a3da5e77ee131b10baa06ca577a562502d203dfc74901. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UYS059300062.
Maldición De Malinche / Que Lindos Que Son Mis Pagos / A Dónde Irán Los Besos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd8752c784dcb15c126e87fe2740ab04a6c1f73c7228b46268ef1bce1c870c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UYM123002468.
Son Para Un Niño Antillano / Del Templao / La Letania De Los Poderosos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b548d99771ad2528b4de6acc2411f5a8ec80cd5de8c77cf4c03ff15c1b722. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UYM123002469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d1cc08eec6dcf7f93258f4a8ff26921a0ca3e3d9a5d3808aeddd41e09c4ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UYM122003057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15360ab0287cbd3a5f911967354649ceb7af48e55aaccfbb98180d2643cc5961. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/UYM122003061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e2820c82eae20c6a9a045af89429ea1cebb3908cddccf38cbed57f400857c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/UYM122003063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1c4eff47befd20c84244bd85a060bf625dec7438c88cfba3c00dd3758ee9b4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UYM122003064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc390f0634f7af4cee045585fc7aa9f763da4590e00e9b97601bd8b8951856e6c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UYM122003066.