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 0x4f6a2936283c22de9e69e28202798cdd2b479ab2d341edd7f10953171096ed1e. 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/c1f9b17f-3ea5-40b1-b8e2-e43721d1c370.json and https://artists.proofprofile.net/proofs/artist/c1f9b17f-3ea5-40b1-b8e2-e43721d1c370.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 0xf0b995ebc7fab22fe15b7f91d80cd11f71bb5e5706dd3a18883666bec898b5fd. 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/QZNJX2182724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad93760f95c79ed768d7d0094f9af032fff0aa34923a0402a0433ac21077b5e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNJX2182716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03bda6c9b1b1051d0a9e506232bf23e53693c55806d151fecf3b532d09a965e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:18Z), 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/QZNJX2182721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1925fd2008e26a822ecb0f339e9033935772a27f9dec8be7224a9cf19edb9689. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNJX2182718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a184ca8d7d31597aaa322d4f1bcf446710dedf6a5db1ee90c0a68a1da90c8c5. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZNJX2182714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d300cc482fd24e6c62572e687889b06a19c9329220bd96df44e34014831375. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNJX2182723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f01da1b7a8e2512a3b4d419127dd5c372f636b04a26323caffb1f1ca0d61c8. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:15Z), 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/QZNJX2182801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae62a853db1e6c63aa65738a05bc1a955427caf8236451d330ccb11b3e3ac9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJX2182793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb499b563e0fa640ce2ef9d80a8def9f262e78791553e581b30525d192c7c610. 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/QZNJX2182798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f8758fba163045f0c33ad352023661ef4deab2d22b92a28d0b314065c21ae. 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/QZNJX2182802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efb91fc7452f7a5ab3b2f0f95d47ad761d49f6c1d218a6a5c807a710a30db00. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZNJX2182792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4125b113e3888fdcd279e3fb2414f121408f49534ccb346c6138872609aa1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:21Z), 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/QZNJX2182804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ae7302da25a6a7c83cfd27f80db8b321789f08bda674a4be036984cff5eb42. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNJX2182795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff3ccf0886c309b27555e61ec7e563d6522884c0f6331020744313221563a48. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNJX2182800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d0066a9f9ec33c77d3344c694670eff93cec868a440cebd9a6a4ed74ee8598. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNJX2182772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5b546aed80dbfa8e43bb56c44a15c7e07efaa431977c66f8c861d9762556cd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJX2182766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4b07e700a481282c15f251faa77af9f34127d9fb7bbba6f286bc7af8cf95a0. 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/QZNJX2182768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000924ee768714d2f43f962d0200ef77c73ae713b2f5af71dc9c467f3c6e49d3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNJX2182767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9cb05a4b7396d6616ed1ce2bdba756cba13951dbd99ea3f0402ce225bbe1dc. 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/QZNJX2182752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e89aacb7d9e6fdb0915f6a3c599f3351bdd609cae70f63cd8d727f3f6afa69. 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/QZNJX2182760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466026faadb0296791e1409ae5fcb58a07e46afdf5b8b1be511ba1124c85c85. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:06:14Z), 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/QZNJX2182757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21d0e96b114c5efb1d9307ee59b23352f00513d4d5e623d5b08f4a32c7e071. 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/QZNJX2182756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b24c51c9bd5fe0fff055d979b13650a23af3b3a53a3bce88967327fdfa698f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJX2182753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab7312503db91fcfe18dcfd5bbd693bcec6abaf00a7d9d2ac892567db5bc3e5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:49Z), 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/QZNJX2182778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e01cf22e2d8666a35149288dd3ed344ae23e1036f3ab02f128306c6263ff4f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNJX2182779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0372d918b6e8770034fc8ceed4abcbc033314715f7cacfeb952c0b31728e5dae. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZNJX2182783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37968d28b207ffaf5809095a5d83dd40e046e570df108bfe425f49d3cce80a89. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:23Z), 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/SE6I32310098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e04503bfd99a14887c17d419665a8eac81aac5ccd40f25f0037e7e662bdad. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE6I32310102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0a3cf5d2948511ff68e94f7c66210aa20cc006d81d2a1d1eb72803b820421. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:42Z), 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/QZNJX2182732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7838f9a62a8ced7a625044d497d7151e821f21f50c9f6d4d4980e620e9e170d8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNJX2182733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bca52cae255bc3ffba8cdc05f5e3c285274158e96e4b069642a20df6c6d65ce. 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/QZNJX2182726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07a428f10f87500f7829dda15c2b2c91ff821fdac6e6dffc87575275a1f662. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:57Z), 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/QZNJX2267349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96bf4371680304f83cd7db198f1ac3d5ae92fcaace8bae00fed6af62bd5032f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHZ32297205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2458bd1b0dd8b9e2454115360b960b7a58962ea21dde2cc148528782c6ca489. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:38Z), 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/QZNJX2182743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9dde93aa4d3829ec08a138c5fcc8307fea03063d5b3c54d7ea1b173a4c1ed. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNJX2182750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035fe8fe1f4223438ae7467c31440ba29e3703148dabef4a27d292880882cc54. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SE66N2353632.