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 0x56c0d8cff93b93b8a1d8d15c8f47b809fa1d60041cdf59156e654b6b2681b1f9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e90d28bb-66fb-49cc-87c4-c18558cf777f.json and https://artists.proofprofile.net/proofs/artist/e90d28bb-66fb-49cc-87c4-c18558cf777f.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 0xa47cd52e40212f9c63bdc32746ea471973eb171d0b3f4a0eb7feea3c1898331b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/KRA592301176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf347ffb7c75ea7e93141a438eb48ecac10e78b7bad5b80b50a0e2baebdbe8782. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRA592301183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bba3bdad4a8dc02ca3a99a04a84a8b58667506ae2b6e940963074377ac42f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA592301187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd55531bd66ee7b93917fc6489245ed00409069f1b1938e5b7739357ca5706. 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/KRA592301188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea45e93222e0c1e710adcb87cfa54ed06cb496d9a02180ff80348613222fcbf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRA592301190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4024841494d79bbe406757f229e33d1fc3fe0e410e190ba6bbbb2a25202ce1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRA592301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47cd52e40212f9c63bdc32746ea471973eb171d0b3f4a0eb7feea3c1898331b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:17Z), 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/KRA592301176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf347ffb7c75ea7e93141a438eb48ecac10e78b7bad5b80b50a0e2baebdbe8782. 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/KRA592301183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc5bd79f5f5f5a6a8d938dbe2cee80b6f17ef4772bebbd43e86d3c6ab585af7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/KRA592301185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bba3bdad4a8dc02ca3a99a04a84a8b58667506ae2b6e940963074377ac42f0. 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/KRA592301187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd55531bd66ee7b93917fc6489245ed00409069f1b1938e5b7739357ca5706. 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/KRA592301188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea45e93222e0c1e710adcb87cfa54ed06cb496d9a02180ff80348613222fcbf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:05Z), 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/KRA592301190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4024841494d79bbe406757f229e33d1fc3fe0e410e190ba6bbbb2a25202ce1. 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/KRA592301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62950a79610299eeaa944bc818a954ebcda2d9b6938840da1f883bcb50859e57. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRA592301568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3927cd9207f82749870d89e2316757a0b77e08d733178d769c877cdb7bfdafa. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:00Z), 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/KRA592301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467fcbf6bf55966bfc8c09287a593da6ce86c80553d796d4ae5512f038ef709. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA592301572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c252781ea2f3232ca9ec3e656650934f4d6727438b0adf3c49f7aa130e5380. 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/KRA592301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47fb9548b2405faaf9154096f4391f011280bb5034ecee941e3d8fd5f95e7a2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/KRA592301575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a3d2baaf748ee729b9e0ebf0657fc749b939f01bb85002d80a128610bb3806. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:35Z), 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/KRA592301577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb2540d93c26790d40011a73d7656902c7faa1825a6dfcd9409ffb7476dc97b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA592301497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21618b0a4efdce2337372f5937ae66574546c9e550847793999d5823b25c95bb. 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/KRA592301498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29729042e6c9c6f458f26a39c8a5cb62cf4c0e10af6675b16ba215dc8579f3f2. 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/KRA592301499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e87d94402ce8edcf1b2125d07e837d01055f27c684c3d86a268849dc3f9bbbf. 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/KRA592301501.