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 0xc684332f75579488ce0c35eb87b6b5c5434a08f9db2cfd3a6ac52f43704fccf8. 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/bc212944-6795-477b-b518-9093b307cca9.json and https://artists.proofprofile.net/proofs/artist/bc212944-6795-477b-b518-9093b307cca9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xanadu: Original Broadway Cast Recording
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 0x1bf1ace83a7ca6e2caab7c79266461a8d4fb59b5d0ccbc1fd445bd8ae3a7b020. 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/USB960885801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec44b30325b67e56c5c166086a7a55118dc387f5920f012bcd187c46c77c46c. 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/USB960885802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca0fa7c284b6b7af39e285d5d52e45ffb773946c16528557f8c8588573250b. 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/USB960885803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6a2a9ba20b5fca80d732823167d0974f39be6bc2fd91eda3420ec0695839e. 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/USB960885806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1636d3c02801490d39d98d2420f4877ca340a45b4cb1ac93360ea8bd76737059. 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/USB960885807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec73ef05408c55a5674a1e37e3a58f8d6bf92f3c648d1030cfeff28b827ed40. 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/USB960885809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72bb63c20c0e9164f2dd472964e0b379c61d0beb1a769e773fcf85df396861. 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/USB960885811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264ae8dc1ffe847717bb664a6b7b6cdac12ebc86edfd424327252f39bafe171. 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/USB960885813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c56f4af961afe1c03c06c315165b29c2221bae0868a40c65e7647668ade9e. 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/USAT22406967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff081180b4378c81fc6dc8e62b056eb08a9644770d4630a3da04ea54603e193. 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/USAT22406968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98462e21d2198fca148f27b2d4cccc64a4f64efa2f3e8fc42715944f93850c. 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/USAT22406971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd597ba391d055dca7e5d9f2b4be016c99106a866bf1fc61f201c24fed2334f0. 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/USAT22406972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327d9348d8f6a0d2b9a3b20b17bf54296c49513ed3454e1fa66a2aae7b6ec117. 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/USAT22406974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4e2b0479d4e904d09a329f5c952a608b5db2f4e7b1e03474c382be4818519. 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/USAT22406976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1900bf81328a5f08b086287824f0a5fddeaed3a1a7b9d4f58b0f48d1383555. 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/USAT22406980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96335b8a75c43a1c3eee8050e21ec26067df2fdfbdb10d5747dab020ebad95b1. 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/USAT22406981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184ccfd2c81800a0487535edfa25833b8a537e66ea53d39a761b95f23fa414a0. 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/USAT22406982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f3bc7c0a304e2d5a96c22983694a8e8a23899cc1080472490df06e09011be2. 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/USAT22406984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d191f244b2969c197aaa5039634cb5ff12c97a553e1768f771dff6d5835e035. 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/USAT22406987.