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 0x6396eec61ce2bd7958feef89d89a534f58c17a2a16a9419c750b2d58e7502cda. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ddcf498-409e-426f-8e43-1d8048669e29.json and https://artists.proofprofile.net/proofs/artist/8ddcf498-409e-426f-8e43-1d8048669e29.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 0x72cd121dbeb00f69229da499ccac9a5c42b03062cf1ca3c568611d250d4b020d. 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/AUMEV2240485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df7f0b79ff9e0c62c79aaf1b2debae62496b1ab380653bda3fb546b13689e11. 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/AUMEV2240489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf69de53715a1b8380ae2a9ed2f6c198db2ad51d5a31b0a4a476a8f90f87f2b. 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/AUMEV2240494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d1597f48845a75541e1b5e28efe7c1ad9ddfb638b15c0b375c9c123086caa. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUMEV2240495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b82834b609150e1791f5940ee00d217971eb62d7a25f5d3b9ba1369bedc47a. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/AUMEV2240496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be7f46f2c4a8c11ae2ce6e8422f71db2607da3e4834d604ae2bcac87838ac86. 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/AUMEV2240497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd97f0cc66776ca597bb8b1a257f76c68b1f0fdda3ad82e87c731cebfba3b16. 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/AUMEV2240509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd408f4109566dce2d34765c119dddbed7017bf11b40960199a31170a76144884. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2240510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec71041770290b970d8881a7e189d860c422646c84cb73a8990beb8bdf763a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/AUMEV2266182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e7a6f7cd50784cefcbd25cc5d2c392253751fe876383d468da881f6666c9ae. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:24Z), 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/AUMEV2266183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186da2754c136e8d34487ddb88f912d8a29d9ef0bdad3a0a0250d00a0f233b8. 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/AUMEV2266184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80632dddd4c1d67505bddeb789e459622692fd62e6feb22c8406bddc02f3c325. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUMEV2266186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8547a57066092e65f373a35588e4d9401a62b9fe2bc8e7eb6fd0ba8d923d51c. 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/AUMEV2266189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf13e3b177fe0054fa6e22c85a3a4bc421b1f9e2c3362330b56b2ccba97a67ff. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUMEV2266190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94627e340a9438af3f7285172ad2c3445cec526afc548660fabab55381004d10. 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/AUMEV2266193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94e333aee1b9f0e9c210c15d34b12b9299729e054de49fcbdbd50554143af4a. 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/AUMEV2266194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07d5290afc94d5e57caa391d8658479bda15942ea4803885d3b6d7608d1c816. 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/AUMEV2266138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32941aecae0c5dfe214c6d09d537b4caf6a4d547a1475dd2c2a52611bef6a2cc. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:52Z), 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/AUMEV2266139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a349329ac8dcfb0315c1b290b47add5be084b00149af5d3ceef943f1ce0d9ac. 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/AUMEV2266140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989b2fe942557c74dd4b7713807ec89d66842b7f649ea7854cbfffdcf16d3595. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:09Z), 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/AUMEV2266141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264afab60d8c4a2c8c8939f07340db25e7deb13df390cdb16dbf9b05bc02f3b5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/AUMEV2266142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708212f74fb7f1677e9046dc748acf22cb7a5b1e7e727a0f26b950e10e6ff9ef. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:20Z), 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/AUMEV2266143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a85286eb2a952d1dd7edbcc6fbc5bc886c0a58a318657ae7ac7efd71e3545f. 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/AUMEV2266145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5472d6c9127402b00e579a76167b7cc81793b3b4717331f4b6a9a400937229c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:08Z), 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/AUMEV2266146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7169fd0b290abec755deb639d13d1d950994ec53074d723c09ab9b0881cef198. 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/AUMEV2266147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac22926b27de070c05cdc699397d3a806edf299b8c2c1ac9488162737b5984f. 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/AUMEV2266151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3bb916bef821a9e15e71370272cbfe51b45dd9ee607e5b7450eb7e99af378d. 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/AUMEV2266152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a226aafdd87287b7f4462bc668f817651e653b64dbe74d583079ace614d7c53. 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/AUMEV2266153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5aa2fd93822711929f39fc43010ee9fbf603c472608f15167bc594944b93e8. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUMEV2266155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762bf79dbfd9acf615bc7d9f2f1ae0bec2795511a6727005ef264eae15d6e1d5. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:46Z), 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/AUMEV2266158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ed4087fa1c143b76121dca0817a4cbfd3c7d6685f3835e727e588409fbca6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUMEV2266160.