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 0x4e8b2ae8b857de4a4b196548ded61041bef39fcddb56fe3c99e14948336ac19c. 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/166fa3d6-c7f4-4d07-8044-fb937da3307f.json and https://artists.proofprofile.net/proofs/artist/166fa3d6-c7f4-4d07-8044-fb937da3307f.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 0xc699d14240480f22febd734e9c1b193afd37be7879d65bb31fb579904a82e05a. 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/TCACS1684195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa64184eb38e89125773120e6f8aa22e5754d5cec0705c82389d3269a5a952f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBER71800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315574981fd8aba64944908eac63ebb8895aa688f9ceaea998743142ec3a691e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBER71800697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc938c44c80c87c0bc645b02ba44c88eef8ea19e1560d0c4ec829f0d904c06b. 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/GBER71800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809ba6ad3edbc3b4e9e1b42557a09d82cbe0959b47853f4f8a9131ae9c4ec5d3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:58Z), 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/GBER71800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb1a1abe7a4932fe99681ec6b350aaa579b0c7a9504942bfc24981f9fe1d4a1. 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/GBER71800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e605ae21c887ddfe3486ae6de988bba033b47dd5b59766e5962e391ada0d4a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GBER71901242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dacb69a34beff23c378f776fe15da05d362c391686d31df4bf08aaabeecf3f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:49Z), 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/UKWX82100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec270ce4df1e37f9105ecec1ed553f740401d01048876bb4fce02e447462c271. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKWX82100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d28459a289af0ee00ab7b32299215cd0f5781f67dc027b5352147d9cf06efc. 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/UKWX82100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda72ce5912c4b3a70badfa440dd3aa4b760793e689567a700550732515decef. 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/UKWX82100250.
I Would Call You (But I Never Know What To Say)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9e0138e55d497a9d65a4cf018592444c97e0433fdc112cfaf55fcd5c905c4b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USZXT2454747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb17765701d9f06e98b7bd9992c39ed6e094fd2484742ad2dfc2884c10d68575. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USZXT2454748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb2aeec2c54302052d9bd3dc99bb3f39ea31bd8c374a4a6f0004c62692e84c6. 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/USZXT2454749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73c8b9c2f60582104852d1d009e6fa3e528012ce13a221773f85c862ac54d10. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/USZXT2454751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733b0786ba9b8094a18a82f0db1f2d4c0cd47480a349344439e78f217c4d9c1a. 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/USZXT2454752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d75b3b3ed52721f2f4fe09ff7cbf8efddd61558cd7ee42e2a97776406d5292. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USZXT2454349.