Original Broadway Cast of Anyone Can Whistle
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 0x9bee282b50b05b26f51313a7a041ee7c43d6e38f7bb9b819441e9c661eb2b30d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9bf2a59-1384-42ae-b7c3-c7755720ef9e.json and https://artists.proofprofile.net/proofs/artist/f9bf2a59-1384-42ae-b7c3-c7755720ef9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Anyone Can Whistle (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 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 0xd7cebb9be37d6c4e0424a2da3813645cfc50d8a2129289261f4be739491c89aa. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USSM10213298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe726a9bdef85ee16b0c3bc9e1d8487e6f344dd6d5ec0946607a957c0463003fc. 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/USSM10213299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1236c82444cdfe42d95a022c5529ab42142025b0c614682d2c858e095a65edf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USSM10213300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb790adaa82d8fc54fbdf4dadbb69e8eaee313e65ac4dff83ca61e05a432c24. 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/USSM10213301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e5c458432c9f1f9c4237ea96d7a33ebf99c2686b99879e0ee0e3a7fa9f00b4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USSM10213302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77722216194985489d38236a736010b40f2290b72e9469e3e10695adefb34b24. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USSM10213303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81211b43eab185c8d819def7e9cf3df66c16470ce65e9682256ca05011d40bc3. 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/USSM10213304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90c98b044207ddcf38aee4d5f3a9ba1a736fec766d945876374a7daad1f6f3. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USSM10213305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62172ee49b027f0632ad9dacf6f19d28686d3cf59deff38382fcdf0252d9d6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USSM10213306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8b111f556e725d67dc39660862f9576e9a41f2a02f19177b9d9f61c64f8cf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USSM10213307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fe634743f9b8581e7d3f6375006c977bfb5a01cff27da703ed954b8e3c5352. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USSM10213308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537146de1b82eeeb091e0e398c5d42ea8de9913704345dcb16dcaa9f52919eb4. 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/USSM10213309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384ca7c97c7de1061d19b237edd167c407a1a4fc971ed2240cc15f5d7411211d. 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/USSM10213310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a675bd583f78010b6e40070294b0e102c336206ea0fbe89127d2589d023fd43. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USSM10213311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17418154b1ffd56823b8ba790ed417c69243dc27948dffdd489d78ec18fb2929. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USSM10213312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8198653de841b46ede5c7755e51afd97eb38156aafe99c7e4eff16f1b7cdf2f8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USSM10213313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5e8071a0deda8ec5913723b98803323e1780b187fc8c8bc0125b22d5d06be7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USSM10213314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b743534d445fb56d24b2828ad0fc80818c1cd6d546365d276a7f82c5e47db0a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USSM10213315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62172ee49b027f0632ad9dacf6f19d28686d3cf59deff38382fcdf0252d9d6. 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/USSM10213306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81211b43eab185c8d819def7e9cf3df66c16470ce65e9682256ca05011d40bc3. 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/USSM10213304.