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 0xc7f8d98cf02ae399b91cd5a4313211980396f5df974ba7086fd7347f75efd8bf. 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/27d5cee1-3bd7-4388-9620-a68ec873fe16.json and https://artists.proofprofile.net/proofs/artist/27d5cee1-3bd7-4388-9620-a68ec873fe16.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 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 0x363754d79999518a6992159aac4f2bb30a6ebcd38578fd99f3abcbc1a37a3633. 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/BRIP72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ea5415cdcb4ad71ad55cbd4d7c5e112f3641a1b0cea07d33a3e7a0b3b86924. 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/BRIP72300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d197b40dbe5d8a4536d9e2e6eab7dbbcae1a166c396f0e905ed810a891fcfad. 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/GBSMU0131255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bea7ea66222b952eb47fb719e30f3d8e5b52bc7ca8f0d37f2f46c51664bdcb. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:47:31Z), 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/GBSMU3427153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8878ec35b05a77619c2fce5ffd9180f21d9868833a1d0f67afd3e2ad42506ac6. 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/GBSMU3427154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd085113b9c1150c42012d43ae22c80bd9da8e7ca644be2fd58d99949c6a7f47. 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/GBSMU3427155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a78eeebcfe2a5085ba0669ca6523eeafa2ab3733c6b619ce1572cef76a3b44. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU3427156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50cf92a1f7258a3b77d6a5a12fbd592593fe48ead9041a1d7919b9eef9a6c7d. 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/GBSMU3427157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf406093c614f28611dbd1b2aeb5387024442351d91fe472b90b666760cc29f. 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/GBSMU3427210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3c8745ea6e841ece05dee74043cc097388ef03166e05357f39fd59b88f4819. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:14Z), 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/GBSMU3427211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1591f278c69894530bf39575c23947e2703c8abb1cee262677538059090d82. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBSMU3427307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0089f63c161e19edc54d37a68a559319ba3e0fec460ebf0ffb987c7c535e12b0. 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/GBSMU3427308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc63a0e08ccee5133a899b82b0b4437046ef3714c3d688ecd9cbeb354f8fb29. 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/GBSMU3427309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d7c554ebf40b8e209fde64089f49f4ec714f1141a98e7fcc491dc4c3ef84e6. 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/GBSMU3427351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509a6c1f43acde2fadb39fe36ed8bae67522e835a967e6899bea79bf6fdd874f. 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/GBSMU3427352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606ab7a66d0e9ec14947668c41f092f597fb8498142359116452776ec79f3f5. 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/GBSMU3427383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc403764e1e800070a1fe91636e7400144117c29a48a45912e7fb3bb90c35daf2. 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/GBSMU3427457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6631447c2381fecf41b146633c7c497d2a3952dd9941fb575dd9aa77811343e9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:18:50Z), 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/GBSMU3427487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d1f24a4c9beb2d356d1efb3b3280f9a025e455fcc7baed9ae1497f117cc27d. 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/GBSMU3427544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfbddabd06977daf26dc45affdea4eb5a9e2f3bcbcd43633cb7b8353f80d0d6. 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/GBSMU3427547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bdaeaa01bacccecec9837e7d110397d6084e9a3d43890073bd0c9e1767704b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBSMU3427833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829b0def550cebe20b59569caefb5c901a392ff718d4ee98737be71779ff435. 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/GBSMU3401442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef4166cb921789e03c60aa08f1ee981529c4908a706f074241a34c334d62c6. 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/GBSMU3401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68d0c03edaf67eabc4f4c801729fb3830c01933ff1c563fe08eff028fcb3bca. 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/GBSMU3401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6632f591b63af5d57afde2be3a9bcb8f33825a3ff87c3604886b2a8055bc9681. 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/GBSMU3401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3c44a5475416e08b0aeb1d445a24085a07f51bc7327e2d8983e2db3245130d. 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/GBSMU3401835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12013622faca5dde7b09eefe8f8a8c73f66cf459c163627ac80d8f53270bd904. 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/GBSMU3401940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a589c3b6c7a68ccb856af7668c8a333fe45b4b1aa4539e6fa919606c82f59f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU3401942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a25ea2a0a404b2cf52cab6d331f335d6d5d28ec2a3b686b974c2969dd46b6f5. 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/GBSMU3401964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4627be379c18de81f037332d32ddcea5731855cb68d211a282fdb3defcf0560e. 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/GBSMU3354666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b519d134efb87fbadd461c57440adf9785b3a7593e294fa8d3894cfa3ed9d49. 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/GBSMU3354667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2152ecceb61431eb043b27cb7761233136d7b0b63f98933f66907a5188850f6a. 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/GBSMU3354668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae42233db6efe932c80f108349117d43ef7dc7b0007cdafced059e4d7b1c1e79. 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/GBSMU3354669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f568a086793df58137f4531b73b872c7a01ebef65d6d7f521b8411f8f850cc. 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/GBSMU3354670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a557673dd9e889d87fbb080bc59e0ca24dde9968fcef09f6600ac598ea6e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU3354724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b84b2422d097c19abf8b4800338a335cb576ca13414a6d79adff910101e48a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU3354725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827ac3d556507af6a5e21dba7e50efb10601af5b476c312f118f4fe962d9fdb9. 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/GBSMU3354726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e89653ded7d77e6366f082f941c49fc755b79c1aea0ace8cfd9811d23783cae. 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/GBSMU3354727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a601648a297762e7b32c0853158886763642ed48f8776d5601eae6c538c1762. 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/GBSMU3354728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1243b1e75b47675066e2f304e5caab7deb1feccf8663f20b3214d5432617c2. 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/GBSMU3354740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51259a9992642abf1b6a26031c38b576a6dd1f15ecf529e05216b8aad4a0417. 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/GBSMU3354741.