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 0x28c49d60709e8cc7eaa3506ee19e18dfc2be503f9070ce8fef35227f7b190911. 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/88999940-4a3c-4329-b92b-04f415b89bfc.json and https://artists.proofprofile.net/proofs/artist/88999940-4a3c-4329-b92b-04f415b89bfc.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 0x3e0660f647db80908ee6050e035430138239387c1087e8913ae7c0f63b2dacad. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:48Z), 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/TCJPG1716740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49946fe55b713c3806691da4d35cc3d4fd9b6cf643e116c6e421d4255103dec5. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCJPH1892213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71a6d589e71d3d0650eb4ffeb359e3fe1cd566e28b0a3e1de37801a279bc7b2. 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/TCJPK2079934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa986d3426511c5243bb3a2160adc2e8aa2d9837b5000fe6f1a1dfd3a7183c6b4. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCJPK2079944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71f7f3116cc7d96088b087f43e61804dc21360a789063e804a0efad025d14e0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCJPK2079956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c812cc74b4d0015ce7352c1750a221d87058d19d6854d2cb56421d5c4ff2263. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPK2079931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bee1a1d75cfdf47d8b804d05b0a6fd2c3a167582ffc2f8a8eec1cf3c05561bf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPZ2405710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcbd2f86406472e6b04936cbc730b4e637601885b4836555a34d452e71d07cb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:09Z), 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/TCJPA2437532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f7345e0e46fd3527274786c5111737718fe6de2d2ae857f7051e36fc597276. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPA2437585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3572f58dc81318f0f2bdb74b3a34f6d6868f53404ba8fdca1919feb1a1e47c9. 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/TCJPA2437598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec1c6eded8950a72d68090377af38ab6ef93ebd7d276e474ae0941bcac4d9f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPA2437608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc877588c9a40ca887acea9528ca5ee1f6e39d63331db947279b232ba4d0c6c0e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPA2437653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402576c6e0dede72d62fd5723f4fbf418a732004fd2f77ca1a56c1ad455ea05f. 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/TCJPA2437688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cb965b82178bf67690e7fb0febf2c641b3ffb55113abd7d9438283191f6a98. 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/TCJPA2437690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6f8eeb3529f5ef26b8909c516610dd15c73f3c543fc5e60638d9cd1e092f5e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPA2437693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a62c70fb02922f652d905ae261cf937f3001321a621b3cb77a12886d0426f71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPM591001078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec272ff2ec71ad8f76d43cf1959f2e727b5ad63b9377825950127c25a4e493. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPM591001120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf300b766a8afe19f1605ed27b539ffbfe4936923da1aed15b11c5e3c6cdc819d. 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/JPJ902009070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da546b1c53d46438095c743b8f9c05d70c081fe5acf949b9297842c402b761a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPO2141976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f92232a3dd6512a760c64daeb7fc645aae4bd39e09f6ee850f68b797579f01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPG102401940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f92232a3dd6512a760c64daeb7fc645aae4bd39e09f6ee850f68b797579f01. 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/JPG102401940.