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 0xacc6120d0a87cfe96292a67853c310cc29e64493480584eac5e333270c449a12. 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/bb4c3373-797a-4422-89b3-e273c15539a9.json and https://artists.proofprofile.net/proofs/artist/bb4c3373-797a-4422-89b3-e273c15539a9.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 0xe3bb63f6931504ad2cda3e2c262be87672e2de1204c1c6d7c6955db6b18b2ef9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAFB2091264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e35fb3e915385945803dd78bba381414cd2f15f4d66d42fb371858f15394c5c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTL92110091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0c4c1e5d7e14b9095fb5b795d0905149c7d64b3c2e6a81950a8e11bdb4370e. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/US39N2314918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080113e566be29bc8a888f35b8143dfad2e3e3f5b53d06bc569131bf70999ff2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US39N2314923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f1ce24eedb05d1006d62b974c62f940e8449e9c14c15ebb7d4412b1f5393d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHP2333627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cac2e949c48cfe8ff362c84ba1cdc3cf43ec9af47be13efaf9a8c3ba5ffd80. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:30:54Z), 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/TCAHP2333884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9e7b97ae0e8aa807496eb8a690fdc0b382b6408486b7e4131004cb241bd566. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:18Z), 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/TCAHP2333939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc48e1f4c42cb82dd1096ff4a014c22131aeee6677f3514abe2053a5812398a1. 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/TCAHP2333944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e676352112d781fee6fcbe5f94fa59bdca16ac00234d1f0f8d2b77a187c577. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMDA62471207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e1d505f6490a3e43e48c48c0e40d172b2c3fd9c4fea99959d32a42fb8a4c3. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QM7282484112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947a6085c720a9ce7b65ad97ce22f2b3bfd397a1ace104690f3f3c24d12825c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:15Z), 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/QM7282446642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1912bc8ace66e1cae9b29fc7fc4c75e6330d5462727497fbdc121167b4a08e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6MZ2485150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d55757434875da59351521d9cb38c024cd25cf8cbbea2af154738907d081f78. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMDA62471211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f02a112b99e684e892bf6b391b9a082fc7c1a7b45e287d0a90c240e76ca5be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA62471212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12194ff197d845abaab1614a85584dc50a44669923ab3c8bc9d114fee9b61e6d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA62471208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7f4a6bfaf9984414f2cda61dc539ca31af2006619263bed818cab9a3da537d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TW2433265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2dc2875fea6ecb624a5656e1546b63f5ba8f65dab866675fe61f7f67a502e0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:45:33Z), 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/QZZ8A2541922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ca2158e0460dd31f338acd535ee0f7945a222e56aeee1d1b939362120f2e6f. 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/US38Y2308514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176efc743c6ad9d0fd9e6b91ce30e951c2cb6217ac46ef8fbaf71d6fc1743050. 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/US38Y2310043.