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 0x66e59d048a3ef84458b0e775aa0494a71c1af0daf87803bf679385c9af25b8b1. 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/bdd892e7-87c1-4f57-9853-d2ceeb28fef5.json and https://artists.proofprofile.net/proofs/artist/bdd892e7-87c1-4f57-9853-d2ceeb28fef5.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 0x3cad21457263ef0f802ddf6ebee3665333bcf4e94ea0e33b97d477e8729da6b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P1451680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf394aa42395297ee4468e4d3f592666298440e65b42b59239150d2356f734. 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/USX9P1451681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d304fe6c40fa6d0d11b98b32adc464b30d68a24986724b72c326ed58532ba7b. 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/USX9P1451684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6d0bf14a8581a84114ac4e2f3ce7417f34afb9c857373eac35ac9a35eb20f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ1727497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dc2248be11ede2f9ed11b13c1717f1d0fa70df0238b7e49766de21d975942d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:35Z), 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/USCGJ1727499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea4a3e62ac6fb97069217175ad54894f0ee5dda8dae51c0cd2c38549a2b6639. 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/USCGH1910144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d54fd1ccd08ca36f6335e5701d616b1335f77345d827144a9407ff6e24d7d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCGH1910145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643290da3edc942d518db20ae7a64706c80adc979352746ecf0b3b6710b02b52. 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/USCGH1910147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf921fbef2e77c69656b9caa4c7e789c482efbfa0ed596942e0764d8dad99c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USCGH1910148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23836c4a0e0c245a2b9752f479048f3c9dd42b856320b777b280454855777f3d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:11Z), 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/USCGH1910154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864aa33bbbf5be307a79b374702810b33a6388077562c063825caac79052b434. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGH1989758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dc8e7aecc7eb340ef6cd2f29984c736cd0b3b0a7a08d5fd0ee7ca460151461. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USCGH1989761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4006085ca91efbf1514f96d06ba7aab7c2a579668b1931c7267020f2df196c0b. 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/USCGH1989762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92f8a96829b9c21446b87b89e90853f14e1bba1fcd950d0e0336fc0033701f5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGH1989765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb708ac2a6f619eb1c72e0969bb529a6e059ef7bd03778d5d49ad4abbe2ed66. 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/USCGH1989766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b5a6b17846e3a4c8f5c1bb7695e307e285aea4e2d9fa241b34fc4644b25f21. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USL4R2007368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa608aa5cb7b942d5fc3e1ae3263408e28d751cb8cd04880beb7ef267ea564416. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USL4R2007372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f976d299869c4f2f9f0f209d925f151c2bee7732980070ba87bef56043f52. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USL4R2007375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab84f59103ec626231ff7211e3623d344faceb4edc8a31813f6321115a8ece. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:40:50Z), 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/USCGH2284381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff810ba8ff953ee08ecbf8d36e46d8844a818c308c7f0acf404f0d279774349. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:17Z), 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/USCGH2284382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b8d46c5480d461476d053461a75f6e7c1e38d4ae6275a67885c7d7056b3dfc. 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/USCGH2284383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc31ed104ee30c6e31b72d279aedaf411d02075565a28cdf77aa04820deb7d72. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:29Z), 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/USCGH2284385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478f3b80c324e7819a81790d1e38e3a0d7af2c712c32138f75f3f7c288a2ac9b. 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/USCGH2284388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c117f460a127bebfa73cd7cf1b59dbeaa623862af25e62fff14330eb537c49. 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/USCGH2328671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ebac39a8200cf1e3a7f54b12722aad76dbd92b7892d234e55353ba428aac64. 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/USCGH2328674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a501c791f8162104d1278169fa0befd78ac8bc3c8ed0671eedb0bf3f2d230b0. 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/USCGH2328681.