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 0xa6be89a06d8adbeb092dd8201189f70aebc3d99934b67c3aab41076db16ee6a5. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d35d4b78-a1fa-4c17-8ede-dd0abdac1d6d.json and https://artists.proofprofile.net/proofs/artist/d35d4b78-a1fa-4c17-8ede-dd0abdac1d6d.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 0x351c66de88d5fdde7f5d212c1ba154a625aa48591fccc8386decf91f9f396862. 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/ATR981160657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bfe4b25f5031aa0fea19a70071f69b00a2a269d17d6fd745f3571f54935f70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATR981161046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc96474d1b1ff142858f3fb5c31c388335855d81ca90274e094f6137ea0173. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATR981161051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3dc8b2d62c0dcbd8c83a736cab24c32d1c13a21f8627d8cdcc27e94f84e2a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATR981161054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5731cd55a929e23ed2d4a63d90b90e57cc9ae2cb4e9adbd2995741963c60b462. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ATR981161047.
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 0x5ecf15e39bfda9bb2bf2a9c4c578aa5666748593fd1a983ba0034664cf237057. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ATR981161052.
Looking for Europe (The Neofolk Compendium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bfe4136aeb829b960d00f4f34a624b70c1a4105b8818522409369e4f3c753a. 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/DES561599802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea5b19f85269195fba4dc2b67e3f17df89374b45cce8ef8af3ee078b882a238. 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/DES561599803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8cb34adf03dc1c0ecdfb20c341d902d3ff73f09961accc2da6960db42280c0. 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/DES561599805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd1fb7af7fa32a0da3d0c1c883d01cb2ce6e3729ab87ff652798bd2f973ee5e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DES561599806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd861af82c453e74640805ba7a546b00d040ec03b003f19cbdb1b27ea0039b33. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES561599810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6489d18e8c82bfea7efb5af8896cd9acddb968729815f9986edbbda6fe9cc26. 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/DES561599813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10c8360b0a336c1b1bfd8e4d5cf507fb3ca476ee7a8fb2083324a615a843a56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES561599815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5680de5c71410597216c2cd5de31c2bfc2517909819d3b9be1ca0752b9e2e2. 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/DES561599819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d92b93cf029196acd6f72ebdb92d482202534b991ac33d57b99d90591d0f47. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DES560390308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490c0615f20d02881298aa51a175cabac70d83f315536c66d279d23c82403726. 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/DES561599822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1202b47f901a4ad9a72502b35ce637aca35c2e98cc05ecfeaf1f0008204bef. 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/DES561599823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e33dfd3ff0e887f95091e4a24b4891800af8f5343d458f07d749bb5ae1e55a. 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/DES561599829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647a4d3da9abea5a59d72f9b88214a7cac8d9dfaed2d2b40ab3558bae460a25c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DES561599832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6c8a374878c48ec8a2164ce9cefe4cc494d2ca5d6a87ec2a911f7e67944b58. 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/DES561599835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585acc16aeecdf9006036244f174305d9f2062e4d199e39479fa271f43fd9ce1. 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/DES561599837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719c42b2af56276a7eacae7d84c58724df2a055201a7d44ffdf4252ae48293f9. 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/DES561599838.
Uljanov - Live at Trafalga Studio Roma 2004
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51edce3554757e3bdb1460945e23e232a758cb03207dd4cb06c0da1efc5a0f2c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DES561599841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa387b1dc21e50c56dce772a0b91ed74ca4c21794597a44ec66c2a10be1991875. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DES561599846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f7e3bfe43926fc019d9574632ee43221a7ad6f50bfe4bfb8c6d873ab143f61. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DES561599848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f746832da8e545042bfd4867ab5fcc1f7eb1ff38e65dfa38a0031e7146dba1. 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/DES560204708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e5b24badbe3cf493e23755834e571eba35efb72baf2c7215e2047da8ce382. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DES561599847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf8af8c9aed2fec06bece290fb83f51f1464b7723ce87c75a8ee7a797e6176d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6541727163.