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 0x2885c9769dc6ac30e4bece400469086f19fdfd59339602634a81d45807091d4b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c823afdd-4387-4693-be51-8a68b1cec576.json and https://artists.proofprofile.net/proofs/artist/c823afdd-4387-4693-be51-8a68b1cec576.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 0x036b4a478ebe9defff67de7ff83bdf71b81e2979a856ce75f7505a4be0ed505d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX3Q92572374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720aa281d3685cd321fd0cf42d22168704738081cbbbad58aa1b8eaee011449a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GX3Q92572348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c485a71b84f27a783459102fe09df9002cf5cb119a555fdefba1a9a61e70b1. 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/GX3Q92572369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe841cf40e90da79a9623563819de266bc6c6b40b242141d6685e86a21d797d49. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GX3Q92572365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf702d3514ead5075015efe70741a7d3c60029401eedc572eb761eb845474d35. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GX3Q92572361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e02dfce6828498c826b97d3285320e804f69d176ea4190c774ed6b4083f910. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX3Q92572336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163d74335a46b157206c3fe81ee41ac870d2cce9783840b5157eecd168a42b3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GX3Q92572341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8530d56092f542b1a675db96658e782fd3dbf91559035b5898d52c06a6aa917. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:58:48Z), 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/GX3Q92572371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5726b8f4ce046cffe5281f58b9aebdfdc02807598fc301908c03660cf5bf05f8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:31Z), 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/GX53U2587454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd334789b300b6fbf37db72e99a6bdeea07849e5d7ce6650d78ec50744b2a82c8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:42Z), 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/GX53U2589654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d952b0bd642fd7b34521b8b851c15ebab0536ad58b6e0cde1d87cdec37eec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXH2J2516457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b8a5e3376b1e8cf072f8f1102c1db537dc88910a284c21c630f6ec4e99ddb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXH2J2523127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b992ede8cd15787405c05457b81c395bcf54eb584837e7a3d9e672188ade6cd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:15Z), 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/GXH2J2523257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269e94bb06f9cc9f71807a564fb5d646d2c938b5faea665863d812487cb1531. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GXH2J2523241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed896d14c845a1d4d28429f1fa5040ac9a224c77de5e3ea7de29872566e6712. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXH2J2577667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7899d6905f3d830049136fa12462db839330432ec41f363b0a8cceb2c5d74. 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/GXH2J2577999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca58864095e5d316cfdf7e07be36cd4eb610bccada877c05136764b260e1d78. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:40:02Z), 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/GXHAF2563780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3399513fd141efe45f52db1f28117aa9a5351afa88cb4517e638728b8a46ad8a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:24Z), 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/GXHAF2563777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf509a767f74ec9e3ad929882655d1e37cd7d212501279c04d6e65a1232cc2519. 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/GXHAF2563776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1ed781c98f15d0fbbff42597b4a7ebb041c11e9aa78d46b95e4abb5ffd787. 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/GXHAF2563752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b01c532af14439943a515c82168c14e0dbad4e170d851a10f5919a596c6d8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:27Z), 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/GXHAF2563773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f1e10f86802c65ef163c14cdf8d114cb88b0b03d4ee02691429098002f908. 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/GXHAF2563779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5309d74b75a33b2dbbc444043d7cde1fbfa63afedaffe297ccc8445bcb902843. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:25Z), 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/GXHND2564411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e0efa5859e6c70475d8541828b05b9b424037e536594123b600fc0d0016331. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:55Z), 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/GXHND2564372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2db3afbfd7431910329c56d75cb425da3e6ec697edfedcf62b20dab87610a8e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHND2564205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb61d31bd60cbb70069c9dda775b4cf03388d4dfd45e321a415ad6e18314e440. 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/GXHND2564323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb187a85705d750198227ffac2ae2da0139343c8042069b99852c9dc95c6deb8e. 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/GX53U2610284.