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 0xf692bba792daed44a4a86caa42565a36f4782255ad8ab3f7069765d6f3b7b35c. 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/10c111cf-8c42-49da-bd09-827b1c16dddf.json and https://artists.proofprofile.net/proofs/artist/10c111cf-8c42-49da-bd09-827b1c16dddf.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 0x730ddd5af459f318efff37d3e56cb42cbf5c5920034a7065cb5e1a0b695e4612. 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/QZ5AB1637300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea5a93617df7a6fb1bb1362c28a0c6e0bb5c7faa25742ee5c38827b5a7e20ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB1638039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260cbdf0d2445a33a187feeef8310d649b9ce270dafa7acac23c8f00b99a9e20. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US7VG1705423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f47ab0e328a23d398eb36f6cd216681107d1eeae200dde55ee373809485a6ac. 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/BXG6R2100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb896d3418af73f6cf0c8b3ba7071d979f0cf3bd7439178ab05cd250008eb5f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BXG6R1800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82537552cc5bb3efa33501ed2529fc11679a8dd4e7e67675dd5d3d81bf5a0e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXG6R1800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d13ebfe7bebd2ae7d54ed13b740c5b84286e09622ab6a46e13cc281a20444. 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/BXG6R1800355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0f2b55a270616eb359e8bf4d42958cd63aa4c790ed30e5102a6d13278de62. 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/BXG6R1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b74392187df1a957e62706c0787499ae0547f1d968bb85d9372d12885850e0c. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/BXG6R2000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c30b0236727dd016ca8824c66586bee2e635827e4f9db962afd59a24e5df8. 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/BXG6R2100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f6e1d701b363893ed26b17b9728c08609bd0d787f4e4c860c71a5695fe4a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXG6R2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea8b8f4496a533aa45d457e76554970386152575c006a13a68fb7b0209732df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXG6R2200679.
Juliet Pra Nós é Igual a Chuteira Pra Um Jogador
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd4cd7bb47f6fe7a42b00f072fa8df9f8b001761ff19ee52aca37a549882c22. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/BXG6R2300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4d281fa4b97ddb6ad5654672b5f7a35e6c0d3a44f11cd45614d7e55582ec02. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXG6R2300748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904082c0bbe8ac2670aa2e193b71253996145c5b4ea6fad3b2c40dba0a897a9c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BXG6R2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55359f52101e2f345e86bd9dc4762a0837e64fb3c3d9deac76a60ba4cbc9b8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXG6R2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5c93bdd8d3d57903dfef558eb9611b63fafd21006cd981990108bb6aca6ee8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG6R2400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15273ce72fa7e99138d6207db9ee0a67e6a74020cb818464ec0ed6f3bf49b668. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXG6R2400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93eaaed6fca58e006d9dc2fb42d20483660f622b2ca5390b8443a6513546e70. 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/BXG6R2400674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a63a840924ce22d32c75931287439eb898619fd2e225835ceacdb0d105a442. 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/BXG6R2400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9163b40f9385d29a592dc0a22aa476be6e0c469f660c718a099224797827b0c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG6R2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3561911a23ccada41ede9f346e9e0b963afbbad3c59cc5d6fb997d113092d5f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG6R2500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83113f4a42a11cf2f45f0dc7ae489cce905123d9fa3b99f3f16aa8f470011c85. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXG6R2500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb791fdf6c6a6bdcc9266c0dc4278ecec5faa777460141ebd11a0bec093a853. 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/BXG6R2500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419ad980b1b98557d42baf0dd95daae5146789c64bc735265d2fc83d85d5c0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKBSS2400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2f6358ac094e0a565fe5b1bb5b00722d82dbc16471a9de474a1d5c54f70080. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKBSS2400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e9540f33cb68b6d40f86b46e16b8edd564ee843de7b6eadc810e89e554af0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2331043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb38da8ee584f9d994101671dbfef494474d0f0a8dffeae5fe8c6d4766b7edf. 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/BXG6R2401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa25a9b8e1541cf8552aa361588d88e4d262ed4e81fccd0b7d227196d5df7a88. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXG6R2400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d2eb0739c8d4a104e1ecadcf240ba29689fbbe2c79d98d66aa904d398f2035. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/BXG6R2400941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda54963be331e2216d6f1c8fe0fb7d0af198ec22a99ff3aa2aa5160a49a32d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BXG6R2400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe30c39757b0b7a68cf46965a8106017e9b8f7d9ba164e0e7847427b7275220. 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/BXG6R2400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ae491142abe357c182ee072d4fdbd59ce41bc44038d86a8a625530b31ebd0d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BXG6R2400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947823fe9a27e04e62631621f9b83f0cc7e89c91ad6b344841a723057742777. 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/BXG6R2400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe30c39757b0b7a68cf46965a8106017e9b8f7d9ba164e0e7847427b7275220. 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/BXG6R2400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ae491142abe357c182ee072d4fdbd59ce41bc44038d86a8a625530b31ebd0d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BXG6R2400487.