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 0x20088b4076a3826cf4387b827c1708d0cf2bace858c8fa2a25ef482a91d185c4. 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/63591cba-6cc2-4b4d-8ac8-24e2c6e113e3.json and https://artists.proofprofile.net/proofs/artist/63591cba-6cc2-4b4d-8ac8-24e2c6e113e3.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 0x3f9100a644aa0c16fd811b85a789cc3cb9998f7ad32a8248c585abc97ff3ce8f. 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/FRX452396363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5778d08d841e5095c2b7a96df2bd2c90ed55647896da4aee0a07a89c9ce6cf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX452396365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef3b87a7e7b3c8d07d75d54a47a26d600fa7d5117c4881b4f951574be5e6d3. 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/FRX452396366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4c175ba90e2cb4e3b1f96c045b72257606d814f7ba2567ac4d810669582230. 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/FRX452396368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7fd2be99ec1560ea4ad6cb02bdb3bd772e2a3207782c8d0368b395facbd7c. 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/FRX452396371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9988b65035cf13b3b4972436510c6c59c8aa5e79a5411306dfad9495ac88a8c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FRX872006271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66b88af1dd0dd7560ba4baed584719d6709491340e0b9ebe0c62474955a3f7. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR10S2430004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad75f9e32a79ab4b8f54cfe923d9128b8ffcd6b6f92d78df970c846399a9a43. 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/FR10S2430009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdecc1cd59d4fdf53f7758a84103847ebc2370733b59ab45eeb982d9bab12a7c. 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/FR10S2430011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea41309290dfde7d3b5d6d30fd6e22fc4df480872ed02b9f5a383397d0b58884. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX762444064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec5304dfc6d3e2515bdb095a177ca7b669021e2330e9f1f23bccf9f71eb53ca. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:42Z), 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/FRX762444076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed98b345a2c651ec26f142e84752ee274b14652d1a13e92e7d8e008586214f9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:54Z), 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/DGA0S2402618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0edfa63ec54486352bc5626419702c7ebf3dbece7f7acf197b3d14f4f5b3a97. 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/FRX872001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c21529bc9ffc02255748e9903669b792c808d8176fbe3323efc940deda07d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872006841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf85e2f544f2e485f97739c27cbd6a5be3b16436489af0e13e2948274b060b5e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872006786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837d0d33285ad753fb4def8989d1b77fe201adfb8106275aeff1794058778205. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:47Z), 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/FRX872006670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d2fa9137abb79de3cdda8978437edff8c8934f08c3d8d9c3995fe01e7d37f0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:19Z), 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/FRX872006198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811c6ec04aa9ec05491e901e6f648012072da61bf63fe8cc811da55fd5f1dd27. 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/FRX872006785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fd0a5d0bc141f0efd275ec66f2c96747e02a77631c32b5a50a0b9732e2db2e. 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/FRX872006833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf68133d92486a63d72de4bcd30c48c42f4373feda4a74494a3f606dc676fec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762045365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8450c841e444cb48da1619df62391915113250e09054844633c50fb9b8403a7. 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/DGA052089410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc127b9d1d2412645eb2bbeb6ec4994dae669d722182b4414319e1ef486e6a9a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:11Z), 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/FR10S2465907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8175c91a74fdb0124883f8590976a0fd473eac2f4411fffa92dbec358d52ca8. 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/DGA0R2468570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f4affdb42ea0a3032f1ce6aead1bf6144ad614be04acfcbffda11fffafc7c. 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/DGA062541147.