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 0x9a63e6d46ea186ba40367702576a003cc34f5840cd4e4de8d8a40b4ee30ba6a6. 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/2d95fdef-acf5-4044-adc5-1288b57ae4f2.json and https://artists.proofprofile.net/proofs/artist/2d95fdef-acf5-4044-adc5-1288b57ae4f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs Of Hope And Comfort (Expanded Edition)
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 0xed455f8f9eb4be8e8c2c9a2227df324e726e76931158c26bd13b2cf65df0354c. 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/GBUM72205386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b10072ec56c27a5d084e5f359a7b59a7309f46f9d32eba1871a4cd3054051e. 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/GBUM72205387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428688a6b43f1550f5fd9f2d6581a53bc5d9df41e68b66b727b603470761c2e0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBUM72205380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b4e602c4a39a8b39ca80547dae7117386e07e6bd786cf4a1ac9e134e5937ad. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBUM72205392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd00a1d405d757e4ffc4d9047f545cfb834a1cd92a1d1c50606330ad710b825a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBUM72205381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7651fc6047c2657270ef6d93eb6836949f39f2a19e4b25098d92e74d26f72. 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/GBUM72205388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536c8ad1c7ce53b4ee62ecc8fb84134d90e4ea0435574eb1e7bfe2c87d22a98. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBUM72205385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b10072ec56c27a5d084e5f359a7b59a7309f46f9d32eba1871a4cd3054051e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBUM72205387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad4e7041c2e3323a44800bd6caf5324d9c7c007bec8fe20aa77203fac23fc90. 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/GBUM72205383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07975e41b6da9f2cb5319fe2079a601dfa3a3d6f13c55159d8da735f41a8f44. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBUM72205391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed455f8f9eb4be8e8c2c9a2227df324e726e76931158c26bd13b2cf65df0354c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBUM72205386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fed9da68158c8b149f63d661631a8c377007c35b4fcbcc737a93ac385913452. 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/GBUM72205393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04469872dca43b9c1b102879964509e1ba6ba6fcf2d94f7f9e6990a833600314. 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/GBUM72205382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cff42cefaaf890796823be632102998b86c91eabce43f64a2947571b29a430b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBUM72205389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd5e19bf24b026c7700d0d990662fb665de78d168c98cc318a4f84a23b14781. 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/GBUM72205384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4a72300fbec262b77cdcbb25f9773314d9fda7eaa560cf44e5e16d0cad271. 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/GBUM72208154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32534c5b408c6943f7adc02f0dd8bed989391aed25f4940296850056a025058d. 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/GBUM72208509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428688a6b43f1550f5fd9f2d6581a53bc5d9df41e68b66b727b603470761c2e0. 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/GBUM72205380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b4e602c4a39a8b39ca80547dae7117386e07e6bd786cf4a1ac9e134e5937ad. 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/GBUM72205392.