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 0x6d5ceec52adc654a550d8d5bf9ddc28d8264123d11367878cf717f2c40d414c2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ff1b498-2a6c-4695-bc95-727958d112f0.json and https://artists.proofprofile.net/proofs/artist/7ff1b498-2a6c-4695-bc95-727958d112f0.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 0x7d627b4069070f2bf36e9f6f9eae933970199ced98dbb578be14afde8c885580. 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/TCAIO2488055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801284eed195ea73535b777399d32e77a4bfd1499c0a48278c2aef0033cb4a3f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAIN2473081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd627e17a9f85301a3077ee5aa4628c0f4d24e8fdf6ec3d9e84e4cf3ec8d1a6. 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/TCAIR2440957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca5db17f6e6c7dc0d93e6dd87db8d83dc6e95af0d10fefe4c04dc170ffc00c5. 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/TCAIQ2461156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9cb6f46431d2460cfbb89e46129fe659bbb4e79d56db6c46cee9d6d2cd9fa1. 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/TCAIS2461558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f5f6c5034976991cb462c4e34ab18d4f7442e677ca3177757a046d5326b35. 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/TCAIV2432772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb972b28cbe7c77520e0511a9f886a6222420dba17233ed46fa792744e73848. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIU2429172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd91299d3f0b7c98e6c9052918a8b9108e66ed1f203e979bffc19c71beb1a9c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIT2422648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd3da1d9c03102b06f0d87a14b6f2f8cbf964c5c7797ec33c1205d9373afe6a. 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/TCAIU2411495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5268ebf7c109c7e7e6b8dde6426fda9508d62483d0030ba8b685d35b99b206. 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/TCAIT2440476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bfdfc35ec952801243d7694efdb85287e175759dea310c62b77815e52a4ac2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAIS2496472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39200befa13e382a351e7fa82c82a9a1e1a16c1449cf452d2ada0ecafe2105. 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/TCAIR2491580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f952f6f31ce52e571af370dc6fa17229cd3b89aed23388772f80b2a4d68b4. 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/TCAIR2449102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41868ed3e53cadc3b1d17dc094b23111ef0c8e02118485a92c6d9e6595bb7ba. 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/TCAIR2431601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18755274e2485aa7f3523a25c3d1b1e5578ba68bd5e6382bea7ea4a1d9132cc. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAIS2424029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40dea0191fdba00a6da4ba43533eb0489761cec78d153b3eea816990c22c526. 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/TCAIS2410390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bd6bb5ab1ed1484178b8dd6627afd0ff10e6edbc33145caf3313efeb59e92e. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCAIR2481399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a4933b95ef61a9d665a10bceacd5c7188ed197df6bcb466568db1fe1ca951. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAIQ2431707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c984d203e2dffcc4587270d2170c28cac31adcafc07c3e04532a660b6fd9d92. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAIQ2422807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6445850f8adb9987476bb690a071a1f6fcc3de93c09a45a713e8f7b96853ce. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIR2459411.