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 0x6bb7245cbaa2975cd96d513fbbee1f8f7cd049df6ec7c1da3d1a8ca84a25071a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4d5d771-251f-4d9c-94f3-f710abd4aee4.json and https://artists.proofprofile.net/proofs/artist/c4d5d771-251f-4d9c-94f3-f710abd4aee4.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 0x92ced4e4fbd7298ced96cfa13b891e54f60d98eebcbf56029a8693b6b3071753. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US5261923144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa130d03baa64373c4286e32db24944ce59410ff6db6ac801b8439780275604b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:03Z), 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/US5262023527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3cb5fa0b08c5d21e38e18ed11d3b078b06eb8dacbc3a7157f58c7c9ba23697. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US5262023642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65c20a429f1c05b126ed87e0bbcb625be9234da65d30aeadea2dde86f561452. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/US5262224792.
Bend - Live at Chain Reaction / Anaheim, CA / November 20th, 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446a54b3e1f6e1e8457623f3f79252b3210060ce41b52f1f073d58b330a77d30. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US5262224793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603d9271ff75e96df46759bb59df82ef9ad6ac0be64b53b8f7fce8e841d1b79. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/US5262124234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22084ab83528846a66436e3ca2ac737559ed45325a4edce5389f8c963725fc3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US5262225143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56dba5cc23c8e1c6ae9cf0de21041ab04fe964fd9abedb0e96150237064eb6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US5262325343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a88eb53f43fcb72aefaa56fd3d2f8f8d4fcc8b9fb24909d8b6ca4f978c8be2e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US5262325344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070f5d309004ae1a51a97c400aa99e39dff02791429d4036fdf67c480598b9d8. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/US5262325345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3d5b7b40fa5ce812413d0f5279d6de2aaade7d7212633b0be66f48d920de. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US5262325346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda03985066960ce7901a4f1350a1e616671f844db9e3e0a2a770df61bcc259e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US5262325347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50680cdf177e7ab5995440ca2d590eda1cf5b0c0f1979b91c1943767fbbe77a3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:06Z), 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/US5262325348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf027214306b5181452d08d2fec8bcaa461c48574cd1be282aae781d4eebc50a9. 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/US5262325349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4f949d001284a38edde73d89c013aea75a352326b3c30c04f7b9b911c47c6a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US5262325350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e932dc948dec2d05d1a626240cd8cfe25d3ef254da5251546dee371914046e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US5262325351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292f730d6059eaa843de8d2bfe514afe3bb0abe726d2e435608459f2d144a701. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:26:20Z), 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/US5262325352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54083a232496a616096b89350244d461ab76be69ef966ebc6e1349a580525244. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US5262325353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de93d9a4bc4bac9624d0a06cd5d6901d811690be240832f26ddb78f1638fe7c. 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/USCW61204585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e142cc234a1835b2fabbf7233ee962a068fb25398f1ef626f04c74a9d8c3f69. 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/US5261420309.