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 0x18b0b76e622810b589631a1fef05e40e0b69e6e11b8056196f007b4fcea4b3a5. 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/5496bf46-024a-4989-bb04-96fcbd00e3cd.json and https://artists.proofprofile.net/proofs/artist/5496bf46-024a-4989-bb04-96fcbd00e3cd.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 0xc81f4215d6f536d95057bbd77101e242e40ed835408759a405313f378a1b8464. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ARC572200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3d89ac5aa4258786c77ad483ff346eec1daaa20ed5b910d36a94bdd15884a0. 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/ARC572200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f49aad88650b3af86edab7d5e6b1747eaa76280bfb0fc393019068e862a2f. 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/MX4971526153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccce917d34ffff8f193c6f1a77ed656679e03556986277d195f780c0c33f0ba. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:31:07Z), 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/MX4971526157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f44ae9046b18a8183b9c1169517f12bae5bef6eda62707edd0b11f6d3ee0c3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:38:14Z), 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/MX4971526158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576014895edd18d7cb32a43c913fbce6cd615a32f75b775120ad5ced07b474e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/MX4971526160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34c1d44ed14775c2014bd2a74178d387b830b8bee06e7974312a0d1c3f390f4. 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/MX4971526162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5199ea86b89e21c2a1583e60b1b9de0ba7165f81b7cc17a08f8652bb1e1cede7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARC572200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a16d9410d0bc50be6eb01c61e31cb8216906d02e20e94c1f4fba41d51e43f61. 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/ARC572200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0a1fa78471d452717e82ce9abf6c9b0dd89b0c6e36b9c4d3916f3219f23fa. 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/MX4971530460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3235b9283aa1a7faf5b668f32b2a68cc225416630614d472cf72fc12ebb4b812. 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/MX4971530466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0d73f9e417e399f89ecb5026914824171ed27541ce89672f01276da92efae4. 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/MX4971530468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2677fe8e559cde52b8519aea73ae62610812670d10e6defe7cabbba9d9c205d3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:30Z), 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/QM6DC1911646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa723b7956506f6e655079df81a2cd43919b10f2f14e48e1e44ad3bc3507bccce. 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/QM6DC1911650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f449c639c1fd841f4c35ec0c093a9d8bfea5c21e58a03516338870f5b794d01. 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/QM6DC1911651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09942841042a3a5437179e6c89add552de2b1bf524ed532115d172b4ac63b1bd. 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/QM6DC1911653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc718c20cb6bb470eeb3366ee322ab332000ea7718f8ed7b3493575978e562c2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM6DC1911655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2741f774efc0c0b880cde752a254f4e36588784abb7d23b28a70e66ec5064034. 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/ARC572200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aa46d974e2352a7768076b879f208c2dfe578cbd01d8518827958a588342d6. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ARC572310372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d592820855d4f89d9cd763fe58d410595ed19ea684a2e593bac2547dd16481. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:28Z), 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/ARC572504761.