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 0xe48cea7bed11e3f359fe5d52eda489f4dd7cb8556f367159e66f2667f02dc109. 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/f39f0630-d2b1-4a65-896f-4ccea0761888.json and https://artists.proofprofile.net/proofs/artist/f39f0630-d2b1-4a65-896f-4ccea0761888.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heathers: The Musical (World Premiere 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 0x28437b99477f991c92e835a0b82355eb9d6189f9e49e19a7ec87bb8bba29c006. 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/US6W61422222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629da38fc33ce9a1a0be9bafc86c97c969628dde57d26ce3a86662283f056b01. 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/US6W61422223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87873727b04dec90153e5f795bbfd0d39dc2970a6966dd1a09146ea26d249685. 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/US6W61422224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493817ce739718dd80b5e000736bcd7a53862e120b805c0c662a1ca80d94face. 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/US6W61422225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8dcb375c4e652530495b7a99bd4a3b82184ab2db8f8bd574cf4bc61f8bb2f7. 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/US6W61422226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48de7c474fd8b47aa3a4745f7ee281f4bfd7382cd8816ba1401f359c293595b. 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/US6W61422227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc548a124effe9fab38e96dccbf12213ceb4449b0744a6f30744b7fba711afd9a. 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/US6W61422228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c88c099e6e70ada3f8d0fc2023a3bf935fc9897a29347760780fdad38f7d90. 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/US6W61422229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa402b3697c517254f5519999c9f9930700bedea1bfc8d66dd819be48ac6cf165. 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/US6W61422230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c75ad49e18226441468ccb6d9b7b2bc630af0ffd6fcb474c87ec377441daed. 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/US6W61422231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41601df1a87c51b08c26a5e11fbf671dfd1a2b99772fef8252ac18bc4adeb41c. 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/US6W61422232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a02648bcd7f47534854ddd12dcbf99050abece3116515b9a6c005594e9fcdd. 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/US6W61422233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d43237b40d007a71134c7b39db16977e4863b742b98007a5de9ca6752b0add7. 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/US6W61422234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946aa77b31f62bda6cf8e71346ca015b00181dae61509fb59fd757328d13e18e. 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/US6W61422235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f45f76d6d9f9083386975f4bdbb2497dc0176ba4f54bf568f05e8978fc598f. 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/US6W61422236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3893eaebbf5d27c13308027e852756e7217ce31235b2b6ac6ac37e20b1bf594. 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/US6W61422237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafddd5f4d118c78683a11abd397e6a883bcd75b39c5bdb585d0c11515723ee22. 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/US6W61422238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f24c0d2bbd209da24e9d5ba6a2b30f9d13c4e01180f30ae4de4aecc5957c9a. 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/US6W61422239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7b463afda67705c144b92bb3be4c1e88ad3f03041b4d6a7ee0c8332ca673b5. 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/US6W61422240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d7902dd340037cd8942be8c8705b1b784e189fe21be57a29b4624b1c975e8. 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/US6W61422241.
The Son (Music From The AMC Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300da39c2db9f1ea41f407146e09c3fb870bad09bcfd8f34f7e34e4d9e3dfad0. 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/US3M51857301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1e9608cca95ba2ea6f67ee4bd0ce60b20c91753be63ce4abf0207230e348b8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US3M51857302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989668ea05df562c5aa1756b76a3282a33d60e39cf6affe5a17ac5acdb177def. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US3M51857304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3bf87cd2a91f091fbf15fd7996c088c1ddd96596da4b5005ca70cb52d74058. 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/US3M51857305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf50abcb41edc88781aabfc31eecc1e2c4b54f3cb24e5db9f73f2fcd6d175a85. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US3M51857307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e04fc997275246edb2d804196784bf448ef996210348090f33bdcf5f35f6cd. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/US3M51857314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5edc8eea66042857580cc3bd82d38bf009c199b69d34d305812695a013ae7a. 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/US3M51857323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16cda32e0d98f92603bf32c66bc06ad564e4663043162c5cd9432ff3e02c333. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USL4Q2094982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76f09204e1426a19b073c901cf1d3361fb797b2ba0338700889d40bb224c7ff. 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/USL4Q2094987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b4cf9311aca05a308f7396cec1d5aeb9af94a1085a25ff784f503604503672. 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/QMQYB1813209.