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 0x6d0125e933ce1153c29f0b454b722980dc65c384c5acf9c5d3a9acabfcb9130f. 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/cc990e07-9cc2-4002-9206-484f0a524d90.json and https://artists.proofprofile.net/proofs/artist/cc990e07-9cc2-4002-9206-484f0a524d90.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 0x6ab240479296adb038f3372b81d5ec1ccc9b8a4a8ab71e8d37d3ff7d1542b613. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:24Z), 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/QZHN42537186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1388b4563615f853f172fbaa3527141565e704d9ebb89e4f4b00e13b6833da34. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHN42541677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd558b2c88a6c4c8d07f4a81cda73339730b458bd4220bd545705c93919fa25. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:59:58Z), 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/QZHN42541679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd4d5335b306089dd9888f06cd000461b2f087932cca3f5ffcbde8625d42f4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN42539467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5c55dc69f3a000eab099071aab6150f48da8c5a96ee11c43e86ae8e49b9b26. 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/QZHN42539398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a84c307ef5a247b251888a5be10e7616054855ea8d3b054639cf6916e4717c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:07Z), 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/QZHN42582220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158d09847ed6e60183891988138dcd6e517f09f2985702a393e04a7d49fff474. 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/QZHN42583928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2187e8ba78b3a6673517104dc141c7ed8e292e9093f3e12aaa37ad66a5848470. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHN42583996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a44900342ca5d598d2db79382a71446f2803fc60a5e5ccaf43d224865691cd9. 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/QZHN52520364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b3b386f41fa7965881841e2deefe29e03a95e92bf40f0cba06cf109bb01911. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHN52520349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8346c07bd491f6880bd0483729da13f5562295a833859d06336ec7a7f853bfe. 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/QZHN52518463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba981264d410cbf31cffe3ae84803bec45f4fe172edbd2318c54cdf5e239c121. 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/QZHN42583923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e537f6e149b0ea1e4c55f2efd5e026d52cb0507ffca0470e9bfb033d990d3. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZHN42583927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadff09b2fdea72ef02b88b8a7bcb5501b93baafe53334d40cd978cb5dde53769. 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/QZHN52544443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62d178cba503273adb41872dec6402a15c009ebf8f15c4169aeafce1504c47. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN52522572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ebd94c684e52da90a04e27f6d75ec6649a535c81e9ec38b926047c2c38683. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHN52544435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e588c4fc347f03aec93776688adc7cd568745cdfc21762ac26c33a22621a0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:46Z), 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/QZHN52542443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dac9227e37f8bf7b8fc4db7932061a3ca8c7a07297b997b5db967b5442f3c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:13Z), 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/QZHN52540679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b141062b42c3d34502c00ba26df7332602c2032abc19ae4f073b06f6adad38. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN52580543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b71c5b4c7845e1a1180cc04f4019b5d884b8b87fc7ad492d6b2c33b0e6c4dc0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHN52579647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405407592b8b6f8389dcffce9bccea611cd63d0e1a59723e3b996ab40e91963. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:00Z), 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/QZHN52572911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2afb6d0bbd93837e7a209ff620aa6016a684893409e228066cdfd0fa8b5134. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN62556497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3ac127a25eeef018ab26c8b246ff64fe428cf34c401f638138b39c5dba431e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZK6Q2586190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ee83b431b692b2c93ec8f87541de89b6b353b67126e7bc46e82089f02b33da. 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/QZK6Q2588015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c22a05cd2a89ad2c7ee86464e47811ba847da48f808e90577832fbeac798994. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZK6Q2589436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32525afb7060573b3229a8659f8ae594d271bf6d65e3c161fa5e56d827c3a89. 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/QZK6N2509586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c047828662fd87c7b0837e9627f2c82a0daee240e9b70d5dc6ffcac8880db. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6N2548164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d56b6caaf9b020926b02f4671e1d4c113a15042c2bb0308837be18ab8a57ba9. 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/QZK6M2551893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243fe1c25a48cff5df5fa1bba8bc3be6b39b369aa769a8a25204367c61b2b26c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6M2590046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf3bfa690210197ea7bf4e52b3165b9bb2840996926594608a85811912b4c9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZK6M2599973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20d9c74dc4a79467350cd1da514a58d274b73bddb4d0b1d2a40143b741f48af. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZK6L2543812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c42501ad3072062632f88bd778e1da00f0e526e68f2b71401ce8e4c4651507. 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/QZK6L2583800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64b1ad920587a9e0186d3e4d67909a8d1ab199ad412d885327e491bb22ed703. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6J2500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb62f4add0638116e696766f5ce90873a398e16e3cfd95a77a3228b0e909ddb. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6H2562773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe492a27779204fbb09f180153adcfd726ec9c2bd6302c104c73e86c245c64. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6G2524953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a07903e5e5bd2eb5dfa043dae1101c4487b7a1329aaf3f59754d591d79ce652. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:38Z), 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/QZK6G2568004.