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 0x21a61aec3af1ba3dcb1c7bba7fe27a10cea2a8fe72c4cec13b920f31c7eb792c. 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/0b8f62d6-509b-4be8-9739-195c78360a2d.json and https://artists.proofprofile.net/proofs/artist/0b8f62d6-509b-4be8-9739-195c78360a2d.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 0x3db4dbe34ff61b8d92eeed1af8b25bcc17c7787c22eb284b92ac686993de68c0. 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/AUBEC2573237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a6d390ec1c8964c295c5c3400c8af9674f0d4b5951ad2781bb52478e93e63. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUBEC2573238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352bc14e2bbb2566117abad4874c00caa3d1d16cc8b352aa939e3a7b7f3787b7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AUBEC2573239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb433ab55a8d92458b64ce7b4584827ffe5a00d0418aac3f086d8fa2f3d60982a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:01:32Z), 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/AUBEC2573240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144dde54b891d3a0edd3db79795268f7bcbb950e92fb322cf2945a725ac053b2. 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/AUBEC2573241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe117f4d06c8ea412d6e09a28599f60b27038fedb41b0580de4bd567b6a41ba31. 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/AUBEC2573242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521490f408bc4d3943e4f2e41aace684d1a7f09d572c1491a86801e6007fa207. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUBEC2573243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfede2e6b11a8a418a072411417101af4391cbcb6e9f375c3f40d63fd3b1bb165. 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/AUBEC2573244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d9eac4cd941338a9c90b34df88808f1ffde03ffac55f5dca5289258d5c236. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUBEC2573245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c323a6ba435d1545a6047d869f66bc595f9cfb5db49747eaac9d2f3b29ecc7. 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/AUBEC2573246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fde337f8aad2d0fa56e8aa26436549e7c6ca12cd2afc92324de0658f05514db. 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/AUBEC2573247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3598279c1adb394f3df4af17c3ffe8315188656bcd2e3d6fbf0dd3ea1a5c9fd. 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/AUBEC2573248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed806ec4962bf513c5c3c065e5f46a664373f83bd98d096f43d10310e65a9d8f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2573249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6778197647c395a596ee04fe1834b10c6130529cb5aea9af324704d0a2c48c2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUBEC2573250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9387560363bcd254e1ac01b5e1cfcf6b01c0bbfdc4b9900297a2d12c771a0c. 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/AUBEC2573251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00e497da06d37a0cbca9f4810ee6839430ce4817ef7259017adfee38b126fc1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2573252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1440a917dd42b88ec5dcd786796c395b35a6e99fb10d304d54a35a9ce86a72. 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/AUBEC2573253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931c7ee08bd6d2ec067e34f8e1e5d99ac952be11e30326aeeae9499ddc1c438. 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/AUBEC2573254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5666e01c012dff216d5500dd548e275b72e8b85549eca411b1f743b558bc59a8. 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/AUBEC2573255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c4101828c10dd9ac01fe6506f3c209b6e83d934606cd7774828ec95fd2c5e7. 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/AUBEC2573256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78fac51a53ed5583e9a2054bc4306371b1b03f36d982ae4cbd0895aca321a79. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2573257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b54f6638471e2862fe7f002251ebf9a56571880afce981479deabbb36b59f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:27:27Z), 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/AUBEC2573258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30324887be86089f47eb388e51fe791fc5c9e1e4189b8c6ed7b0671fdc6f8bd. 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/AUBEC2573259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7145fc74ace3ef1f0d1c19100686f5a351d52f950bc131320209fd71732f6097. 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/AUBEC2573260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e14162425d5b1463df2587a7e12e29dda026258674100db761653e8ec9eff73. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/AUBEC2573261.