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 0xe6132177c5cba0986a7cd1221b6542c863b6d4ed6268d56155895006f2b35083. 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/694b4d83-2ea0-4d7e-bbd3-8c92bff283aa.json and https://artists.proofprofile.net/proofs/artist/694b4d83-2ea0-4d7e-bbd3-8c92bff283aa.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 0xb37ce89ce0e067772ecf00a2782e877cb64c630d7564fc8d11368e798242c66b. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USBY70500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912865e7f5bb0866ce379ae663f14eef24c3667a2420040c87e8bea71b0a81e6. 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/USBY70500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510cd1f376f017480eea646c809def4b5068403c47c9ab02d6a051fb1fb270d2. 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/USBY70500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48a0189e3eeecca446f6c02514295e2b333f316e2c1936d857ac6db4ad97e7c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USBY70500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58985fa4c08bb1f29bfa22b543ddd07c5098979c6adcade736354d4dad1a3ac9. 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/USBS51269608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1a4fe2d42b2826473026b8adaffd2224824779b61bd45c81b3b99d55c5217. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USBS51269619.
Laggies (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb80fe82542f849583f1e0bc3862b8661d7ae1f6a80555d5df04b62afc2d5e97. 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/USLS51443022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589b5994469f753ce8db80214e8f0d9cf03ceebc37d4c1e7e465536a2c8b095d. 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/USAT21702132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9749ef9085dca03b0343c53fb4bdf880d78e292a0b6cb6b950c4101e0e45fcff. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USAT21702134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b09ba58ce5efee5e6eb440dbd175aebab8a0b093e34aac1e91f0dd68acbfad. 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/USAT21702135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067c2c6966cfab27c31266007b4e3b3d8bd5140b5040176ef1740d9f4033f2f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:25Z), 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/USAT21702136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f3cd1866934c3a513381674c7fa3b4573867aed7df7cb9a2ad15e1106fe0b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USAT21702137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa507ab2b50df3a4f287b0cfcdb8eb448cf1e98d49c7462acc3d6bb083b0d18f9. 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/USAT21702142.
Keep Yourself Warm (from Tiny Changes: A Celebration of Frightened Rabbit's 'The Midnight Organ Fight')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d66d08eb079ac084f80b7b1a4f70a16c342fcc399115f7708e360e42715900c. 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/USBS52020006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7e08c4f2627e8a18f142440364604818b27199b9c60c02461f355e9824d7b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/USBS52020009.
Frightening Fishes (Main Title Theme from "Shrinking")
Tiny Changes: A Celebration of Frightened Rabbit's 'The Midnight Organ Fight'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013491eac2be59bb743fd35798ad4a4599449514c2b21de80c93083613e3833d. 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/GBAHS1900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50aa308d513eb2a73f1d0bf133990814e2debe0e06197bf505fe5270e683813. 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/USQX92201572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50aa308d513eb2a73f1d0bf133990814e2debe0e06197bf505fe5270e683813. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQX92201572.
One Fast Move Or I'm Gone Music From Kerouac's Big Sur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef509816c783bab37c6ebe4a37196f7a074fab9bb619967406b34c79878bdc. 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/USAT20902768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd65e740f32c6b7a5246b489f988d3c9df0414c8f6e475c56d5bb2c72cbcf5f. 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/USAT20902769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1aec4e96c50546463d03effffc0dabc1d9f9aaaa394fd9192d748c503c31a3. 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/USAT20902770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b65df1fcfff0adff1f4cae33bac3c026a29c817fb8dd552452e0704ed186dc. 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/USAT20902771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b23146212ec8b51a86eed74d75bf5701d04d78d7093a1c248b01a2f1ace012f. 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/USAT20902772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80520f151e2dc5b8eda19b092686b92fd01bd845a888639db3faf35731577c49. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20902773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f000c97141f330097c3b136d374b042a292a96cc24cfad0aca17ec54bc20a65. 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/USAT20902774.