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 0x14680e5ab64ffbc82dea14b552d4310fac22e52a2688b5dd44c503809f91b368. 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/24932e78-0d60-40c5-aa07-434c41ea9e52.json and https://artists.proofprofile.net/proofs/artist/24932e78-0d60-40c5-aa07-434c41ea9e52.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 0x3d46cf1c4f2171d7e3ee9d7e96f2eb2cb4a9746ba6ea9fbee8f73ca073a15367. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZA53Q2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c29c7d08be874825949360e6d05cce3a91f4c76677c80d50032f564e948324. 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/ZATCV2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375559e3bc871dbb447a9680ade82202a1b2bf542c61c16c2492216247912283. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:41Z), 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/ZATCV2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20af2f08b58d7e77a8cea2e8f67ee231942f7d2ea08417c3e9ba92094e14249. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/ZATCV2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd43c42f6a598e94d593182eac3bc06b1aee0fba6f719ea71e4c776a46ece04. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:03Z), 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/UKXN22329428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b724ef14abe763e75d3796d117da65ad8adf478aa9e88252959a748a2bb5a4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:00Z), 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/UKXN22329455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57414b67590b93db3e97d6baa6f22e520567e730e81ce9a3cb4289dc99cf414a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKXN22329449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799500105a5243acb2b4e3cc9b9c286816e8430b590bc5d0085fb2c1247cec81. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX53U2339856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2afe52e428f74c192300e006825b4922df6479edb69d5697daefe61e9d89554. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX53U2341322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f76ab58fbab7d8357623ba413c731af70675294eb18bf5435b1a6fb7eeb1482. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX53U2339859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aad78fc6358fde0896ad68ef4c2e061efdbe656cc6da95198fb31bdd9ba902. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX53U2339858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a1bfc5760d5f75a5643048c5d640603f0aed3f2452d426f6e3852f042e3c9e. 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/GX53U2339862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d972ed83eca3353e3e99f52975b37acc29e517ac663c76f375d211d9fa5e9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX3Q92509738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4feabda1a8c57c8db995d42409282d1d03aeb8d8c51de45e3cc31fcd5c63a4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX3Q92509642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d25d008dc8fe7b1ada42e0884bf3a083ce5632053d4de8b0bdf5b83eb9c1e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:59Z), 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/GX3Q92509561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912e467a06acafa6ed3eeafe833860279491215eed1363f961ec0062db2e0ab2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:06Z), 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/GX3Q92564190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bdf775f036ffac294da6cac79d0f7cb680b67353fcbe1dfb682a0f2ab7ec56. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:27Z), 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/GX3Q92564189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2250d32f9ea80ff55476e33a515d889f7b1cc40ed25c3a6900813f160706ca5d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX3Q92564203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c58a1b9f46b61e48272eeed8e055863ed157793666f2689e27db74bedef09e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXH2J2579882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f727629ac1babd545017dffe397744bc3b5a852186dce1d1c25b79d938e3c4. 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/GXHAF2531976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7690459a23f7cc3f0aaa4e3e86e624cfd897c024270849c3c93978995567fac0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHAF2531980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf4634c006caba39510f0541bb4920e642c18048c645d75be24ee0a40e3558e. 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/GXHAF2531979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f657f5fa3926bc806249e91c84d7c96b2e11a74758a9f75df5b31f1f0462d26. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXHAF2531975.