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 0x9c9fde57a0bf23085989dec455630e68e5c98277a496133296fc3f6f0f45a3ea. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/105ebad1-3111-47d5-8890-5eb2a42238ea.json and https://artists.proofprofile.net/proofs/artist/105ebad1-3111-47d5-8890-5eb2a42238ea.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1190e4aeb34f9214b28957f58c4f5f7b12cd75bbcea7b342a0071d11f6fe4. 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/USHM91306415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e33b728c5bf0277f9a3236ce50e3ed41856b60b367be3353bfdd5c9b77800. 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/USHM91306416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ff1fb4419e9e4602daf8405bf6369a08a3a27f338f7e0b50e0a5a4245d41b. 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/USHM91306417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9673ccebc7d73f611e6f064adc7f4dca1b9043be2684127dc5bf9a3ef09f74c. 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/USHM91306418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca67f4f054745a26795cccd85e20b2eaf7708e14af7e2655d6508ca7777871b. 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/USHM91306419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1724cfd2e9bed200024ff73b56f78ea91bf2d7a18036f46ee9bae20797c183. 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/USHM91306422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf562dd948de90e25e60e6bab0dabb4bf797e61860b4420819021ef0e06dc5612. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/USHM91306420.
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 0x324a5d0e1fe53a336f91b416943d01e7c5afb59d946c6a4c9840147fab94f3ce. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM91306421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeba88b9fb2716bcea957721eb36d38f51e01b4d39ea78c4195be9884bd7a2e3. 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/USHM91306423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaa798627bdfecc8ba2587393bf4e4e4ba98b70193a9d0933ae775dc1c3ddae. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM91306424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942fae22617e78d43f60d42d03e1af9a98ac95374472503cd03015267bb35d81. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USHM91306425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b1b5aec62d0dd19b90f8f2d4714b3f52b102ad44aec8f4ca20fbe508fc27ff. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM91306426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c513c81fa0cefdbd0235078b96fb9dad02967d1e7c6a00905627b2433ff9e1. 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/USHM80945387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e31a4ae8b64084809b1feda3e7f2c3edf8865b7444f90144815d6a3037dc05. 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/USHM80945389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbea7d2c04281ac0a0200b38602833b191136c108d70b2c63987d087ca874117. 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/USHM80945391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1762af985b8c525d0fb6e4cda84087a6b92f03fa99d3c2b9edd9727202dc9185. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM80945397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad7b061f666378c62978b2ffa339c99b35ca9992e2054c4528e75ad954a370. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM80945386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad06d16da85b6bce3cc9ecf62707d69b4279fb56330d79daec0cede3c7834f3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM80945388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb84ab445603ce34f12d4954149df54eadb2588c2d01766b432f36cc93fdf1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM80945390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7f92af864ab0834a83047ae20b308ba216fe04b780dd37cfeb1b74e92a500. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USHM80945393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060d97f635106ee7b0d80cd3be354adcdf0e71d99c233ae889bc9f8ca4a43bea. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM80945394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27ac59e3ad174e04e8c9f9444aa0a7a7082cf0c8cb9a219eda6eedac3e5525. 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/USX9P0684930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5119447b4d25c13050025fee83a4e5136a45362a9f5a634e7132048fccf068. 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/USX9P0684933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe5733195fbb3b710521fbd141e833519161781d82aa1faaee97530ccb6348. 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/USX9P0684934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea2266e6e2488686fe4ddc2281bfa0770902d3c9baea25e90f1c465bcace657. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P0684937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaf98c9b45d8cbe49b77cf4ecd3768547755a2eb06e39ce2b0f03719818d54d. 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/USX9P0684939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe1507c61c6405d98460efed26d5663afe8abad0d0db8a907ace7ef2a210db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USX9P0684941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57513fac600e666a978d5071b1fb619bdf8b2d9315b85129821ae030c4dec862. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USX9P0684931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6beceb0a219fee89a4b659fe1c76d690c91c13401b3ad2ae45688d8997fd995. 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/USX9P0684932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7b49c9998ac38185ace0c7d77d3c53f5cbcf69983efd2edd309f2acb6fc907. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USX9P0684935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3246ac26c03400bed056326ba0c7905b576f06349e2159c9462eae5ff2150ca9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USX9P0684936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ee7f2d2c2f3a0f44332aee1e23b783505607ecd26311ac97f5047996e1e888. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USX9P0684938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360874609f48ba0787fab3769b1daee7f1fc440cced117ca5918171ba4d7853c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USX9P0684940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95cba0d25d298a8f8298acea82ee5a476c9053539bcc447745d3ccacbed2296. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM80876864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a456521f1b73e9835ede313b94e112a917e60e3891619d30eebce6c24da630. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM80876867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a963f5502ac25fcff308ff92c83ecf13cf94b6647365b4356e1d077e858c70b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USHM80876866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2774eb6b5b6a604cc7a5eb2c9112ba99b5c5031bb23023c1daa93d6064314643. 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/USHM80876868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bddc159a9a589750b0df9bd98fac6ceb276e5942a712c9a34ae7eace8377207. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USHM80876869.